Le Roux, Danielle M. et al. published their research in Environmental Science & Technology in 2021 | CAS: 38183-12-9

4-Phenyl-3H,3’H-spiro[furan-2,1′-isobenzofuran]-3,3′-dione (cas: 38183-12-9) belongs to benzofurans derivatives. Many natural or synthetic compounds containing benzofuran skeletons have been found to possess remarkable activity as agrochemicals and pharmaceuticals. They are also prone to polymerisation in the presence of concentrated mineral acids and Lewis acids.HPLC of Formula: 38183-12-9

Photoproduction Rates of One-Electron Reductants by Chromophoric Dissolved Organic Matter via Fluorescence Spectroscopy: Comparison with Superoxide and Hydrogen Peroxide Rates was written by Le Roux, Danielle M.;Powers, Leanne C.;Blough, Neil V.. And the article was included in Environmental Science & Technology in 2021.HPLC of Formula: 38183-12-9 This article mentions the following:

One-electron reductants (OER) photoproduced by chromophoric dissolved organic matter (CDOM) have been shown to be likely precursors for the formation of superoxide and subsequently hydrogen peroxide. An improved method that employs a nitroxide radical probe (3AP) has been developed and utilized to determine the photoproduction rates of OER from a diverse set of CDOM samples. 3AP reacts with OER to produce the hydroxylamine, which is then derivatized with fluorescamine and quantified spectrofluorometrically. Although less sensitive than traditional methods for measuring RO2 , measuring RH provides a simpler and faster method of estimating RO2 and is amenable to continuous measurement via flow injection anal. Production rates of OER (RH), superoxide (RO2), and hydrogen peroxide (RH2O2) have a similar wavelength dependence, indicating a common origin. If all the OER react with mol. oxygen to produce superoxide, then the simplest mechanism predicts that RH/RH2O2 and RO2/RH2O2 should be equal to 2. However, our measurements reveal RH/RH2O2 values as high as 16 (5.7-16), consistent with prior results, and RO2/RH2O2 values as high as 8 (5.4-8.2). These results indicate that a substantial fraction of superoxide (65-88%) is not undergoing dismutation. A reasonable oxidative sink for superoxide is reaction with photoproduced phenoxy radicals within CDOM. In the experiment, the researchers used many compounds, for example, 4-Phenyl-3H,3’H-spiro[furan-2,1′-isobenzofuran]-3,3′-dione (cas: 38183-12-9HPLC of Formula: 38183-12-9).

4-Phenyl-3H,3’H-spiro[furan-2,1′-isobenzofuran]-3,3′-dione (cas: 38183-12-9) belongs to benzofurans derivatives. Many natural or synthetic compounds containing benzofuran skeletons have been found to possess remarkable activity as agrochemicals and pharmaceuticals. They are also prone to polymerisation in the presence of concentrated mineral acids and Lewis acids.HPLC of Formula: 38183-12-9

Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

Chen, Yaxin et al. published their research in ACS Applied Materials & Interfaces in 2021 | CAS: 76-54-0

2′,7′-Dichloro-3′,6′-dihydroxy-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one (cas: 76-54-0) belongs to benzofurans derivatives. Benzofuran is the “”parent”” of many related compounds with more complex structures. For example, psoralen is a benzofuran derivative that occurs in several plants. Introduction of benzofurans in organic synthesis, particularly drug synthesis, involves generally the use of their metalated species as nucleophiles in addition reactions or in metal-catalysed cross-coupling reactions.Name: 2′,7′-Dichloro-3′,6′-dihydroxy-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one

Robust Damage-Reporting Strategy Enabled by Dual-Compartment Microcapsules was written by Chen, Yaxin;Li, Wei;Luo, Jing;Liu, Ren;Sun, Guanqing;Liu, Xiaoya. And the article was included in ACS Applied Materials & Interfaces in 2021.Name: 2′,7′-Dichloro-3′,6′-dihydroxy-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one This article mentions the following:

Dye-filled microcapsules are an attractive way to identify microscopic damage of materials by the naked eye. However, there are many disadvantages in traditional microcapsule-based self-reporting materials, such as a poor self-reporting effect. A new concept for the design of self-reporting microcapsules is presented here. Our work develops a novel kind of dual-compartmental microcapsule via Pickering emulsion photopolymerization, which can encapsulate two interacting species (“pro-dye” and “developer”) sep. in a single microcapsule. In our strategy, SiO2 microspheres encapsulating polyetheramine (PEA, developer) were first prepared and employed as a Pickering emulsifier to stabilize oil-in-water emulsions, in which the oil phase consisted of 2′,7′-dichlorofluorescein (DCF, pro-dye) and a monomer. After the monomer polymerization, a dual-compartment microcapsule, which encapsulated the pro-dye in the core and the developer in the shell, was obtained. Upon the rupture of the microcapsule, the pro-dye and the developer were released simultaneously and reacted to yield a pronounced chromogenic response. Compared with traditional double-microcapsule systems, this dual-compartment microcapsule system demonstrated a more efficient and pronounced self-reporting effect. This is the first time that a double-encapsulation scheme involving the compartmentalized release of two interacting species within a single microcapsule has been demonstrated for self-reporting, which overcomes the tough problems of the uneven distribution of the traditional double-microcapsule systems. In the experiment, the researchers used many compounds, for example, 2′,7′-Dichloro-3′,6′-dihydroxy-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one (cas: 76-54-0Name: 2′,7′-Dichloro-3′,6′-dihydroxy-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one).

2′,7′-Dichloro-3′,6′-dihydroxy-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one (cas: 76-54-0) belongs to benzofurans derivatives. Benzofuran is the “”parent”” of many related compounds with more complex structures. For example, psoralen is a benzofuran derivative that occurs in several plants. Introduction of benzofurans in organic synthesis, particularly drug synthesis, involves generally the use of their metalated species as nucleophiles in addition reactions or in metal-catalysed cross-coupling reactions.Name: 2′,7′-Dichloro-3′,6′-dihydroxy-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one

Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

Chen, Sijie et al. published their research in International Journal of Nanomedicine in 2020 | CAS: 76-54-0

2′,7′-Dichloro-3′,6′-dihydroxy-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one (cas: 76-54-0) belongs to benzofurans derivatives. Benzofuran derivatives have shown many biological activities, including antifungal and antimicrobial properties, and acting as antagonists of H3 receptors and angiotensin II. Benzofurans are stable towards alkali and readily polymerize on treatment with sulfuric acid, due to which they are useful for the preparation of low cost chemically relatively inert resins.Synthetic Route of C20H10Cl2O5

Mitochondria-targeting oxygen-sufficient perfluorocarbon nanoparticles for imaging-guided tumor phototherapy was written by Chen, Sijie;Huang, Biying;Pei, Wenjing;Wang, Long;Xu, Yan;Niu, Chengcheng. And the article was included in International Journal of Nanomedicine in 2020.Synthetic Route of C20H10Cl2O5 This article mentions the following:

Although photothermal therapy (PTT) and photodynamics therapy (PDT) have both made excellent progress in tumor therapy, the effectiveness of using PTT or PDT alone is dissatisfactory due to the limitations of the penetration depth in PTT and the hypoxic microenvironment of tumors for PDT. Combination phototherapy has currently become a burgeoning cancer treatment. Methods and Materials: In this work, a mitochondria-targeting liquid perfluorocarbon (PFC)-based oxygen delivery system was developed for the synergistic PDT/photothermal therapy (PTT) of cancer through image guiding. Importantly, these nanoparticles (NPs) can effectively and accurately accumulate in the target tumor via the enhanced permeability and retention (EPR) effect. Conclusion: This approach offers a novel technique to achieve outstanding antitumor efficacy by an unprecedented design with tumor mitochondria targeting, oxygen delivery, and synergistic PDT/PTT with dual-imaging guidance. In the experiment, the researchers used many compounds, for example, 2′,7′-Dichloro-3′,6′-dihydroxy-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one (cas: 76-54-0Synthetic Route of C20H10Cl2O5).

2′,7′-Dichloro-3′,6′-dihydroxy-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one (cas: 76-54-0) belongs to benzofurans derivatives. Benzofuran derivatives have shown many biological activities, including antifungal and antimicrobial properties, and acting as antagonists of H3 receptors and angiotensin II. Benzofurans are stable towards alkali and readily polymerize on treatment with sulfuric acid, due to which they are useful for the preparation of low cost chemically relatively inert resins.Synthetic Route of C20H10Cl2O5

Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

Li, Xiang et al. published their research in Journal of Materials Chemistry B: Materials for Biology and Medicine in 2021 | CAS: 76-54-0

2′,7′-Dichloro-3′,6′-dihydroxy-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one (cas: 76-54-0) belongs to benzofurans derivatives. Benzofurans are compounds with a planar structure having 10 pi electrons that include the lone pair on oxygen atom, which makes it more susceptible to electrophilic attack. Substituted benzofurans find applications such as fluorescent sensors, oxidants, in drug discovery, and in another field of chemistry and agriculture.Computed Properties of C20H10Cl2O5

De novo design of self-assembly hydrogels based on Fmoc-diphenylalanine providing drug release was written by Li, Xiang;Zhang, Huijun;Liu, Lingyan;Cao, Chunyan;Wei, Peng;Yi, Xin;Zhou, Yifeng;Lv, Qingyang;Zhou, Dongfang;Yi, Tao. And the article was included in Journal of Materials Chemistry B: Materials for Biology and Medicine in 2021.Computed Properties of C20H10Cl2O5 This article mentions the following:

Short peptides with self-assembled nanostructures are widely applied in the areas of drug delivery systems and biomaterials. In this article, we create a new peptide-based hydrogelator (Fmoc-FFRRVR) based on N-fluorenylmethoxycarbonyl-diphenylalanine (Fmoc-FF) through an approach to improve its hydrophilicity. Compared to Fmoc-FF, Fmoc-FFRRVR prefers to form a hydrogel under mild conditions, and the gelation time is only 2 s. Fmoc-FFRRVR self-assembles into organized arrays of β-sheets in nanofibers via π-stacking of Fmoc-FF, which are supported by CD and fluorescence emission spectroscopy. Rheol. results confirm that the hydrogel of Fmoc-FFRRVR is elastic, reversible and injectable. The newly discovered hydrogel not only retains some excellent performances of Fmoc-FF, but also can be used as a drug carrier for biomedical applications. In the experiment, the researchers used many compounds, for example, 2′,7′-Dichloro-3′,6′-dihydroxy-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one (cas: 76-54-0Computed Properties of C20H10Cl2O5).

2′,7′-Dichloro-3′,6′-dihydroxy-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one (cas: 76-54-0) belongs to benzofurans derivatives. Benzofurans are compounds with a planar structure having 10 pi electrons that include the lone pair on oxygen atom, which makes it more susceptible to electrophilic attack. Substituted benzofurans find applications such as fluorescent sensors, oxidants, in drug discovery, and in another field of chemistry and agriculture.Computed Properties of C20H10Cl2O5

Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

Li, Ling et al. published their research in Nature Chemistry in 2013 | CAS: 38220-75-6

1-(5-Bromobenzofuran-2-yl)ethanone (cas: 38220-75-6) belongs to benzofurans derivatives. Benzofuran is a core structural unit found in many naturally occurring compounds with multidirectional biological activities. Substituted benzofurans find applications such as fluorescent sensors, oxidants, in drug discovery, and in another field of chemistry and agriculture.COA of Formula: C10H7BrO2

Stereoretentive Pd-catalysed Stille cross-coupling reactions of secondary alkyl azastannatranes and aryl halides was written by Li, Ling;Wang, Chao-Yuan;Huang, Rongcai;Biscoe, Mark R.. And the article was included in Nature Chemistry in 2013.COA of Formula: C10H7BrO2 This article mentions the following:

Racemic and nonracemic secondary stannatranes I [R = EtCHMe, Me2CH, 4-tetrahydropyranyl, (EtO2CCH2)CHMe, 3-octyl, PhCHMe, 1-methyl-4-piperidinyl, PhCH2CH2CHMe, (S)-PhCH2CH2CHMe, (S)-1-Boc-2-pyrrolidinyl] were prepared; I underwent regioselective Stille coupling reactions with aryl halides and triflates in the presence of bis(dibenzylideneacetone)palladium, the JackiePhos ligand II [R1 = 3,5-(F3C)2C6H3], CuCl, and KF to yield secondary alkyl-substituted arenes such as Et 4-(2-butyl)benzoate in 26-94% yields (two of 23 reactions < 50% yield). Aryl halides and triflates with electron-donating and electron-withdrawing substituents were tolerated. Coupling of I [R = (S)-PhCH2CH2CHMe, 94% ee] with 2-bromopyridine or 2-bromo-6-methylquinoline yielded the coupling products with almost complete retention of stereochem. in 91-92% ee. The structure of a nonracemic (bromobenzoyl)pyrrolidinylbenzonitrile was determined by X-ray crystallog. In the experiment, the researchers used many compounds, for example, 1-(5-Bromobenzofuran-2-yl)ethanone (cas: 38220-75-6COA of Formula: C10H7BrO2).

1-(5-Bromobenzofuran-2-yl)ethanone (cas: 38220-75-6) belongs to benzofurans derivatives. Benzofuran is a core structural unit found in many naturally occurring compounds with multidirectional biological activities. Substituted benzofurans find applications such as fluorescent sensors, oxidants, in drug discovery, and in another field of chemistry and agriculture.COA of Formula: C10H7BrO2

Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

Jyung, Sunna et al. published their research in Food Microbiology in 2022 | CAS: 76-54-0

2′,7′-Dichloro-3′,6′-dihydroxy-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one (cas: 76-54-0) belongs to benzofurans derivatives. Benzofuran is the “”parent”” of many related compounds with more complex structures. For example, psoralen is a benzofuran derivative that occurs in several plants. As benzofurans are prone to undergo ring opening of the heterocycle, examples of reduction of this type of aromatics by using dissolving metals are rather scarce.Reference of 76-54-0

L. monocytogens exhibited less cell membrane damage, lipid peroxidation, and intracellular reactive oxygen species accumulation after plasma-activated water treatment compared to E. coli O157:H7 and S. Typhimurium was written by Jyung, Sunna;Kang, Jun-Won;Kang, Dong-Hyun. And the article was included in Food Microbiology in 2022.Reference of 76-54-0 This article mentions the following:

This study investigated the bactericidal activity of plasma-activated water (PAW) generated with a remote discharge reactor against Escherichia coli O157:H7, Salmonella Typhimurium, and Listeria monocytogenes. PAW-40, -80, and -120, prepared by activating distilled water for 40, 80, and 120 min, resp., showed inactivation activity against pathogenic bacteria, which increased as the activation time increased due to decrease in pH and increase in oxidation-reduction potential and reactive oxygen/nitrogen species (RONS) of PAW. In addition, Gram-pos. bacteria L. monocytogenes showed superior resistance to PAW than Gram-neg. bacteria E. coli O157:H7 and S. Typhimurium. Compared with E. coli O157:H7 and S. Typhimurium, L. monocytogens exhibited less cell membrane damage, lipid peroxidation, and intracellular ROS accumulation after PAW treatment, which indicated that L. monocytogenes exhibited greater resistance because the thick cell wall buffered RONS diffusion into the cell. PAW also showed a control effect on the pathogenic bacteria on cherry tomato, and the effect was maintained throughout five repeated applications; thus, proposing high reusability of PAW. The results of this study propose that PAW generated with a remote discharge reactor can be utilized for pathogen control and provides basic data for related research and practical industrial applications. In the experiment, the researchers used many compounds, for example, 2′,7′-Dichloro-3′,6′-dihydroxy-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one (cas: 76-54-0Reference of 76-54-0).

2′,7′-Dichloro-3′,6′-dihydroxy-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one (cas: 76-54-0) belongs to benzofurans derivatives. Benzofuran is the “”parent”” of many related compounds with more complex structures. For example, psoralen is a benzofuran derivative that occurs in several plants. As benzofurans are prone to undergo ring opening of the heterocycle, examples of reduction of this type of aromatics by using dissolving metals are rather scarce.Reference of 76-54-0

Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

Onishchenko, Anatolii et al. published their research in Biological Trace Element Research in 2022 | CAS: 76-54-0

2′,7′-Dichloro-3′,6′-dihydroxy-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one (cas: 76-54-0) belongs to benzofurans derivatives. Benzofurans are compounds with a planar structure having 10 pi electrons that include the lone pair on oxygen atom, which makes it more susceptible to electrophilic attack. Substituted benzofurans find applications such as fluorescent sensors, oxidants, in drug discovery, and in another field of chemistry and agriculture.Application In Synthesis of 2′,7′-Dichloro-3′,6′-dihydroxy-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one

UV Light-Activated GdYVO4:Eu3 Nanoparticles Induce Reactive Oxygen Species Generation in Leukocytes Without Affecting Erythrocytes In Vitro was written by Onishchenko, Anatolii;Myasoedov, Valeriy;Yefimova, Svetlana;Nakonechna, Oksana;Prokopyuk, Volodymyr;Butov, Dmytro;Kokbas, Umut;Klochkov, Vladimir;Maksimchuk, Pavel;Kavok, Nataliya;Tkachenko, Anton. And the article was included in Biological Trace Element Research in 2022.Application In Synthesis of 2′,7′-Dichloro-3′,6′-dihydroxy-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one This article mentions the following:

Nanoparticles (NPs) have been reported to be promising enhancement agents for radiation therapy. The aim of the study was to assess the cytotoxicity of UV non-treated and UV pretreated GdYVO4:Eu3+ nanoparticles against erythrocytes and leukocytes by detecting eryptosis and reactive oxygen species (ROS) generation. Levels of intracellular ROS in erythrocytes and leukocytes using a ROS-sensitive dye 2′,7′-dichlorodihydrofluorescein diacetate (H2DCFDA), as well as eryptosis rate utilizing annexin V staining, following direct exposure to UV-activated and nonactivated NPs were detected by flow cytometry. Blood cells were collected from 9 intact WAG rats. Neither the UV light-untreated GdYVO4:Eu3+ NPs nor the treated ones promoted eryptosis and ROS generation in erythrocytes. Low concentrations of UV light-untreated NPs did not induce oxidative stress in leukocytes, evidenced by unaffected intracellular ROS levels. UV light treatment grants prooxidant properties to NPs, confirmed by NP-induced ROS overproduction in leukocytes. High concentrations of both UV light-treated and untreated NPs altered the redox state of leukocytes. UV light treatment imparts prooxidant properties to GdYVO4:Eu3+ NPs, making them promising radiosensitizing agents in cancer radiation therapy. In the experiment, the researchers used many compounds, for example, 2′,7′-Dichloro-3′,6′-dihydroxy-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one (cas: 76-54-0Application In Synthesis of 2′,7′-Dichloro-3′,6′-dihydroxy-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one).

2′,7′-Dichloro-3′,6′-dihydroxy-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one (cas: 76-54-0) belongs to benzofurans derivatives. Benzofurans are compounds with a planar structure having 10 pi electrons that include the lone pair on oxygen atom, which makes it more susceptible to electrophilic attack. Substituted benzofurans find applications such as fluorescent sensors, oxidants, in drug discovery, and in another field of chemistry and agriculture.Application In Synthesis of 2′,7′-Dichloro-3′,6′-dihydroxy-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one

Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

Ha, Byunghang et al. published their research in Biosensors & Bioelectronics in 2021 | CAS: 76-54-0

2′,7′-Dichloro-3′,6′-dihydroxy-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one (cas: 76-54-0) belongs to benzofurans derivatives. Benzofuran derivatives are one of the most important oxygen-containing heterocycles. Benzofurans have also made significant and distinctive contributions to biology. They exhibit several biological activities that range from antioxidant, antitubercular, antiplasmodial, insecticidal.Reference of 76-54-0

Flow radiocytometry using droplet optofluidics was written by Ha, Byunghang;Kim, Tae Jin;Moon, Ejung;Giaccia, Amato J.;Pratx, Guillem. And the article was included in Biosensors & Bioelectronics in 2021.Reference of 76-54-0 This article mentions the following:

Flow-based cytometry methods are widely used to analyze heterogeneous cell populations. However, their use for small mol. studies remains limited due to bulky fluorescent labels that often interfere with biochem. activity in cells. In contrast, radiotracers require minimal modification of their target mols. and can track biochem. processes with negligible interference and high specificity. Here, we introduce flow radiocytometry (FRCM) that broadens the scope of current cytometry methods to include beta-emitting radiotracers as probes for single cell studies. FRCM uses droplet microfluidics and radiofluorogenesis to translate the radioactivity of single cells into a fluorescent signal that is then read out using a high-throughput optofluidic device. As a proof of concept, we quantitated [18F]fluorodeoxyglucose radiotracer uptake in single human breast cancer cells and successfully assessed the metabolic flux of glucose and its heterogeneity at the cellular level. We believe FRCM has potential applications ranging from anal. assays for cancer and other diseases to development of small-mol. drugs. In the experiment, the researchers used many compounds, for example, 2′,7′-Dichloro-3′,6′-dihydroxy-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one (cas: 76-54-0Reference of 76-54-0).

2′,7′-Dichloro-3′,6′-dihydroxy-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one (cas: 76-54-0) belongs to benzofurans derivatives. Benzofuran derivatives are one of the most important oxygen-containing heterocycles. Benzofurans have also made significant and distinctive contributions to biology. They exhibit several biological activities that range from antioxidant, antitubercular, antiplasmodial, insecticidal.Reference of 76-54-0

Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

Epstein, W. W. et al. published their research in Journal of Organic Chemistry in 1965 | CAS: 1646-27-1

Methyl benzofuran-2-carboxylate (cas: 1646-27-1) belongs to benzofurans derivatives. Benzofurans are only weakly aromatic in nature and they are cleaved by many oxidative and reductive conditions. In nature, benzofurans have occupied an important role among the plant phenols & several pharmacologically active compounds.Recommanded Product: 1646-27-1

Infrared spectra of some substituted benzofuran derivatives was written by Epstein, W. W.;Horton, W. J.;Lin, C. T.. And the article was included in Journal of Organic Chemistry in 1965.Recommanded Product: 1646-27-1 This article mentions the following:

The ir spectra of a number of simple and complex substituted benzofurans (I) were studied. The findings indicated a relationship between the presence or absence of furan H atoms and medium to strong bands in the 1020-1180-cm.-1 region. I were divided into 2 groups. One group wherein R1 = H and the 2nd group in which R1 = COMe, CO2Me, CO2H, iso-Pr, iso-PrCO, C:CHMe, and COCH2COMe. The 1st had 2 bands, one in the 1125-1160cm.-1 region and the other in the 1029-1087-cm.-1 region associated with the in-plane bending modes of the β- and α-H atoms on the furan nucleus. The 2nd had only 1 band at 1121-1172 cm.-1 characteristic of the β-H. In the experiment, the researchers used many compounds, for example, Methyl benzofuran-2-carboxylate (cas: 1646-27-1Recommanded Product: 1646-27-1).

Methyl benzofuran-2-carboxylate (cas: 1646-27-1) belongs to benzofurans derivatives. Benzofurans are only weakly aromatic in nature and they are cleaved by many oxidative and reductive conditions. In nature, benzofurans have occupied an important role among the plant phenols & several pharmacologically active compounds.Recommanded Product: 1646-27-1

Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

Huang, Dongmei et al. published their research in Sepu in 2014 | CAS: 38183-12-9

4-Phenyl-3H,3’H-spiro[furan-2,1′-isobenzofuran]-3,3′-dione (cas: 38183-12-9) belongs to benzofurans derivatives. Benzofuran derivatives are one of the most important oxygen-containing heterocycles. They are also prone to polymerisation in the presence of concentrated mineral acids and Lewis acids.HPLC of Formula: 38183-12-9

Determination of 14 sulfonamide residues in shrimps by high performance liquid chromatography coupled with post-column derivatization was written by Huang, Dongmei;Huang, Xuanyun;Gu, Runrun;Hui, Yunhua;Tian, Liangliang;Feng, Bing;Zhang, Xuan;Yu, Huijuan. And the article was included in Sepu in 2014.HPLC of Formula: 38183-12-9 This article mentions the following:

A method for the determination of 14 sulfonamide residues in shrimps by high performance liquid chromatog. coupled with post-column derivatization was established. The sulfonamide residues were extracted with Et acetate after adding sulfapyridine as internal standard The extracts were vacuum-concentrated and reverse-extracted by 2 mol/L hydrochloric acid solution for clean-up, and then the hydrochloric acid solution was defatted with n-hexane. The solution after filtration was blended with a mixed solution of methanol, acetonitrile and 3.5 mol/L sodium acetate solution (5:5:20, volume/volume/v). The sulfonamides were separated on a C18 column by RP-HPLC and online derivatized with a fluorescamine and detected with a fluorescence detector. The standard addition method was used for quant. anal. The parameters of post-column derivatization system, such as concentration of fluorescamine solution, velocity of reagent solution and reaction temperature, were optimized. The calibration curves of the method showed good linearity in the range of 5-200 μg/L. The limits of quantification (LOQ, S/N = 10) were 1.0-5.0 μg/kg for the 14 sulfonamides. The recoveries were 77.8%-103.6% in the spiked range of 1.0-100.0 μg/kg in shrimps with the relative standard deviations of 2.9%-9.1% (n = 6). The results indicated that the method is sensitive, efficient and more accurate. It is suitable for the simultaneous determination of the 14 sulfonamide residues in shrimps. In the experiment, the researchers used many compounds, for example, 4-Phenyl-3H,3’H-spiro[furan-2,1′-isobenzofuran]-3,3′-dione (cas: 38183-12-9HPLC of Formula: 38183-12-9).

4-Phenyl-3H,3’H-spiro[furan-2,1′-isobenzofuran]-3,3′-dione (cas: 38183-12-9) belongs to benzofurans derivatives. Benzofuran derivatives are one of the most important oxygen-containing heterocycles. They are also prone to polymerisation in the presence of concentrated mineral acids and Lewis acids.HPLC of Formula: 38183-12-9

Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem