37772-22-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 37772-22-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,7,7,7 and 2 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 37772-22:
(7*3)+(6*7)+(5*7)+(4*7)+(3*2)+(2*2)+(1*2)=138
138 % 10 = 8
So 37772-22-8 is a valid CAS Registry Number.
37772-22-8Relevant academic research and scientific papers
CONVERSION OF THE CHOLESTEROL SIDECHAIN TO A 17-ACETYL GROUP BY REMOTE CHLORINATION REACTIONS
Maitra, Uday,Breslow, Ronald
, p. 3087 - 3090 (2007/10/02)
Two methods to convert cholesterol to pregnane derivatives are described.In one, template directed chlorination of C-20 with an iodoaryl ester attached at the 6 β position was used to convert i-cholesterol to pregnenolone.
