157750-01-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 157750-01-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,7,5 and 0 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 157750-01:
(8*1)+(7*5)+(6*7)+(5*7)+(4*5)+(3*0)+(2*0)+(1*1)=141
141 % 10 = 1
So 157750-01-1 is a valid CAS Registry Number.
157750-01-1Relevant articles and documents
Synthesis, conformational analysis, and biological-activity of the 1-α,25-dihydroxy-10,19-dihydrovitamin D3 isomers
Sicinski,Deluca
, p. 150 - 171 (1994)
The synthesis of the four 1α,25-dihydroxy-10,19-dihydrovitamin D3 stereoisomers (8-11) is described starting from 25-hydroxyvitamin D3(1c). Acetic acid-catalyzed cycloreversion of 1 α-hydroxylated 3,5-cyclovitamin D compound 14, prod