He, Xingcun published the artcileCatalytic determination of osmium by using flow-injection analysis, Safety of 3,3-Bis(4-hydroxynaphthalen-1-yl)isobenzofuran-1(3H)-one, the publication is Huaxue Tongbao (1988), 41-2, database is CAplus.
Os(VIII) was determined by flow-injection spectrophotometry (monitored at 640 nm) based on the catalytic effect of Os(VIII) on the decolorization reaction of α-naphtholphthalein and KIO4 in borate buffer solution at pH 9.20-9.80. The catalytic reaction is a zero-order reaction. The calibration curve is linear for 0.010-0.12 μg Os/mL. The detection limit is 0.010 μg/mL. The method is accurate, simple, and with an anal. rate of 75/h. Os was determined in ore concentrates and slags with satisfactory results.
Huaxue Tongbao published new progress about 596-01-0. 596-01-0 belongs to benzofurans, auxiliary class Benzofuran,Naphthalene,Alcohol,Ester, name is 3,3-Bis(4-hydroxynaphthalen-1-yl)isobenzofuran-1(3H)-one, and the molecular formula is C28H18O4, Safety of 3,3-Bis(4-hydroxynaphthalen-1-yl)isobenzofuran-1(3H)-one.
Referemce:
https://en.wikipedia.org/wiki/Benzofuran,
Benzofuran | C8H6O – PubChem