397333-68-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 397333-68-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,9,7,3,3 and 3 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 397333-68:
(8*3)+(7*9)+(6*7)+(5*3)+(4*3)+(3*3)+(2*6)+(1*8)=185
185 % 10 = 5
So 397333-68-5 is a valid CAS Registry Number.
397333-68-5Relevant academic research and scientific papers
3-Methyl-20-epi-vitamin d derivatives
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Page 3-5, (2010/11/30)
The object of the present invention is to synthesize vitamin D derivatives in which the 3-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
