Wang, Lin et al. published their research in Nano Letters in 2006 | CAS: 92557-80-7

2,5-Dioxopyrrolidin-1-yl 3′,6′-dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9′-xanthene]-5-carboxylate (cas: 92557-80-7) belongs to benzofurans derivatives. Benzofuran derivatives are one of the most important oxygen-containing heterocycles. 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.Product Details of 92557-80-7

Multicolor FRET Silica Nanoparticles by Single Wavelength Excitation was written by Wang, Lin;Tan, Weihong. And the article was included in Nano Letters in 2006.Product Details of 92557-80-7 This article mentions the following:

Fluorescent nanoparticles with multiple emission signatures by a single wavelength excitation are needed in multiplex bioanal. and mol. imaging. The authors have prepared silica nanoparticles encapsulated with three organic dyes using a modified Stoeber synthesis method. By varying the doping ratio of the three tandem dyes, fluorescence resonance energy transfer (FRET)-mediated emission signatures can be tuned to have the nanoparticles exhibit multiple colors under one single wavelength excitation. These nanoparticles are intensely fluorescent, highly photostable, uniform in size, and biocompatible. The acceptor emission of the FRET nanoparticles has generated a large Stokes shift, which implicates broad applications in biol. labeling and imaging. Mol. recognition moieties, such as biotin, can be covalently attached to the nanoparticle surface to allow for specific binding to target mols. These multicolor FRET silica nanoparticles can be used as barcoding tags for multiplexed signaling. By using these NPs, one can envision a dynamic, multicolor, colocalization methodol. to follow proteins, nucleic acids, mol. machines, and assemblies within living systems. In the experiment, the researchers used many compounds, for example, 2,5-Dioxopyrrolidin-1-yl 3′,6′-dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9′-xanthene]-5-carboxylate (cas: 92557-80-7Product Details of 92557-80-7).

2,5-Dioxopyrrolidin-1-yl 3′,6′-dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9′-xanthene]-5-carboxylate (cas: 92557-80-7) belongs to benzofurans derivatives. Benzofuran derivatives are one of the most important oxygen-containing heterocycles. 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.Product Details of 92557-80-7

Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem