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130933-91-4

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130933-91-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 130933-91-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,0,9,3 and 3 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 130933-91:
(8*1)+(7*3)+(6*0)+(5*9)+(4*3)+(3*3)+(2*9)+(1*1)=114
114 % 10 = 4
So 130933-91-4 is a valid CAS Registry Number.

130933-91-4Downstream Products

130933-91-4Relevant articles and documents

Synthesis and biological activity of bay-region metabolites of a cyclopenta-fused polycyclic aromatic hydrocarbon: Benz[j]aceanthrylene

Sangaiah,Gold,Newcomb,Ball

, p. 546 - 549 (2007/10/02)

The possibility of bay-region activation of the cyclopenta PAH (polycyclic aromatic hydrocarbon with a peripherally fused cyclopenta ring) benz[j]aceanthrylene (1) was investigated by synthesis and bioassay of the bay-region metabolites trans-9,10-dihydroxy-9,10-dihydrobenz[j]aceanthrylene (4), trans-9,10-dihydroxy-anti-7,8-epoxy-7,8,9,10-tetrahydrobenz[j] aceanthrylene (2), and 9,10-dihydrobenz[j]aceanthrylene 9,10-oxide (3). The known 1,2-dihydrobenz[j]aceanthrylene-9,10-dione (5) was obtained by published methods; however, the direct route to target dihydrodiol 4, dehydrogenation of the saturated five-membered ring of 5 followed by NaBH4 reduction, gave a poor yield of 4 contaminated with tetrahydrogenated products. Acceptable yields of 4 were obtained by reduction of 5 to the corresponding tetrahydro diol, diacetylation of the diol, and dehydrogenation of the five-membered ring followed by base-catalyzed deacetylation to 4. anti-Diol epoxide 2 was generated by m-chloroperoxybenzoic acid oxidation of 4. Oxide 3 was synthesized by treatment of the monotosylate of 4 with NaOH in monoglyme. Diol epoxide 2 was an active mutagen in Salmonella typhimurium strain TA98 in the absence of metabolic activation, 3 showed marginal activity, while 3 and 4 were mutagenic with metabolic activation. These results coupled with previous studies support activation of benz[j]aceanthrylene via both 2 and cyclopenta ring epoxidation.

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