133640-31-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 133640-31-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,6,4 and 0 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 133640-31:
(8*1)+(7*3)+(6*3)+(5*6)+(4*4)+(3*0)+(2*3)+(1*1)=100
100 % 10 = 0
So 133640-31-0 is a valid CAS Registry Number.
133640-31-0Relevant articles and documents
SYNTHESIS OF NATURAL PHYTOSTEROIDS OF THE 6-KETOSTIGMASTANE SERIES AND COMPOUNDS RELATED TO THEM
Kovganko, N. V.,Kashkan, Zh. N.
, p. 656 - 660 (1990)
Preparative methods of synthesizing a number of natural 6-ketosteroids and 6-alcohols related to them from β-sitosterol have been developed.
