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82911-13-5

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82911-13-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 82911-13-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,2,9,1 and 1 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 82911-13:
(7*8)+(6*2)+(5*9)+(4*1)+(3*1)+(2*1)+(1*3)=125
125 % 10 = 5
So 82911-13-5 is a valid CAS Registry Number.
InChI:InChI=1/C16H12O3/c17-13-10-6-3-5-9-8-4-1-2-7-11(8)16(12(9)10)15(19-16)14(13)18/h1-7,13-15,17-18H

82911-13-5Downstream Products

82911-13-5Relevant articles and documents

Oxidation of Polynuclear Aromatic Hydrocarbons with Ceric Ammonium Sulfate: Preparation of Quinones and Lactones

Balanikas, George,Hussain, Nalband,Amin, Shantu,Hecht, Stephen S.

, p. 1007 - 1010 (2007/10/02)

The oxidation of polynuclear aromatic hydrocarbons with ceric ammonium sulfate (CAS) in sulfuric acid was investigated.Oxidation of benzofluoranthene (1) gave a mixture of the 7,12- and 2,3-diones 3 and 4.The 2,3-dione (4) was used as the starting material for a facile synthesis of 2,3-dihydro-2,3-dihydroxybenzofluoranthene (5) and the corresponding diol epoxide 6, which are potentially important metabolites of benzofluoranthene.In a similar manner, 2,3-dihydro-2,3-dihydroxyfluoranthene (7) and its diol epoxide 8 were prepared from fluoranthene.Oxidation of benzofluoranthene (2) with CAS did not yield quinones, but instead gave benzofluorenopyran-5,13-dione (9), which was identified by its spectral properties and by reduction with LiAlH4.The lactone 9 formed via initial K-region oxidation of 2.It was not formed from 1-hydroxybenzofluoranthene (12), which gave benzofluoranthene-1,2-dione (13) upon CAS oxidation.CAS oxidation of benzopyrene (14) gave a mixture of the 1,6- and 3,6-quinones 17 and 18.Treatment of benzanthracene (15) with CAS yielded 7-oxo-12-hydroxy-7,12-dihydrobenzanthracene (19) and the 7,12-quinone 20.Oxidation of chrysene (16) with CAS gave 6H-benzonaphthopyran-6-one (21) and the 5,6-quinone 22.The results of this study demonstrate that CAS oxidation is useful for the synthesis of certain PAH quinones or lactones, from polynuclear aromatic hydrocarbons, depending on the ring system.

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