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81757-79-1

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81757-79-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81757-79-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,7,5 and 7 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 81757-79:
(7*8)+(6*1)+(5*7)+(4*5)+(3*7)+(2*7)+(1*9)=161
161 % 10 = 1
So 81757-79-1 is a valid CAS Registry Number.

81757-79-1Relevant articles and documents

Chemistry of the Podocarpaceae. LIX Dimerization of a Favorski-Type Rearrangement Product

Cambie, Richard C.,Robertson, John D.,Rutledge, Peter S.,Woodgate, Paul D.

, p. 183 - 195 (2007/10/02)

Ozonolysis of podocarpic acid (1) followed by reduction of the resulting hydroperoxide (16) gives a moderate yield of the keto diacid (6).Treatment of the derived 7α-bromo keto acid (10) with potassium carbonate in acetone effects a Favorski-type rearrang

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