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169437-81-4

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169437-81-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 169437-81-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,9,4,3 and 7 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 169437-81:
(8*1)+(7*6)+(6*9)+(5*4)+(4*3)+(3*7)+(2*8)+(1*1)=174
174 % 10 = 4
So 169437-81-4 is a valid CAS Registry Number.

169437-81-4Relevant articles and documents

Enantioselective Synthesis of the (+)-anti-7,8-Dihydrodiol-9,10-epoxide of the Potent Carcinogen Benzopyrene

Huang, Xiaoming,Harris, Thomas M.

, p. 1699 - 1700 (2007/10/02)

The title compound, the most important genotoxic metabolite of benzopyrene, has been prepared efficiently in a synthesis which capitalized on Jacobsen-type enantioselective epoxidation of 9,10-dihydrodibenzopyrene, cleavage of the epoxide by KOH-Me2SO to give the tetrahydro-trans-7,8-diol, and formation of the dibenzoate from which the contaminating antipode was removed by crystallization.

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