401569-63-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 401569-63-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,1,5,6 and 9 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 401569-63:
(8*4)+(7*0)+(6*1)+(5*5)+(4*6)+(3*9)+(2*6)+(1*3)=129
129 % 10 = 9
So 401569-63-9 is a valid CAS Registry Number.
401569-63-9Relevant academic research and scientific papers
1-METHYL-20-EPIVITAMIN D DERIVATIVE
-
, (2008/06/13)
The object of the present invention is to synthesize vitamin D derivatives in which the 1-position is substituted with methyl and the steric configuration at the 20-position is epimerized. The present invention provides vitamin D derivatives of Formula (1