77871-31-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77871-31-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,8,7 and 1 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 77871-31:
(7*7)+(6*7)+(5*8)+(4*7)+(3*1)+(2*3)+(1*1)=169
169 % 10 = 9
So 77871-31-9 is a valid CAS Registry Number.
77871-31-9Relevant academic research and scientific papers
Koreeda, Masato,Chen, Y. P. Liang
, p. 15 - 18 (1981)
An efficient and regiochemically controlled synthesis of (+/-)-desepoxy-4,5-didehydromethylenomycin A is reported.
