100071-89-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 100071-89-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,0,0,7 and 1 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 100071-89:
(8*1)+(7*0)+(6*0)+(5*0)+(4*7)+(3*1)+(2*8)+(1*9)=64
64 % 10 = 4
So 100071-89-4 is a valid CAS Registry Number.
100071-89-4Relevant articles and documents
An improved synthesis of 13β-ethyl-11-methylenegon-4-en-3,17-dione
Gao, Hongwu,Su, Xiangdong,Huang, Lei,Li, Zhensu
, p. 1981 - 1987 (2007/10/03)
An improved synthesis of 13β-ethyl-11-methylenegon-4-en-3,17-dione with the total yield of 57% starting from 13β-ethyl-11α-hydroxy-gon-4-ene-3,17- dione is described.