81768-72-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81768-72-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,7,6 and 8 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 81768-72:
(7*8)+(6*1)+(5*7)+(4*6)+(3*8)+(2*7)+(1*2)=161
161 % 10 = 1
So 81768-72-1 is a valid CAS Registry Number.
81768-72-1Relevant articles and documents
Synthesis of coleon C tri-O-methyl ether
Burnell, Robert H.,Andersen, Andre,Neron, Martine,Savard, Sylvain
, p. 2769 - 2776 (2007/10/02)
Starting from podocarpic acid, two model preparations are described leading to p-quinones suitably functionalized as intermediates in the synthesis of coleon C.The proper p-quinone was obtained by a regio-and stereo-selective route and, following steps pr