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156969-65-2

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156969-65-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 156969-65-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,6,9,6 and 9 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 156969-65:
(8*1)+(7*5)+(6*6)+(5*9)+(4*6)+(3*9)+(2*6)+(1*5)=192
192 % 10 = 2
So 156969-65-2 is a valid CAS Registry Number.

156969-65-2Relevant articles and documents

Regioselective Synthesis of Camptothecin

Rao, A. V. Rama,Yadav, J. S.,Valluri, Muralikrishna

, p. 3613 - 3616 (2007/10/02)

A convergent synthesis of (+/-)camtothecin is described.

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