157637-97-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 157637-97-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,6,3 and 7 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 157637-97:
(8*1)+(7*5)+(6*7)+(5*6)+(4*3)+(3*7)+(2*9)+(1*7)=173
173 % 10 = 3
So 157637-97-3 is a valid CAS Registry Number.
157637-97-3Relevant academic research and scientific papers
Synthesis, conformational analysis, and biological-activity of the 1-α,25-dihydroxy-10,19-dihydrovitamin D3 isomers
Sicinski,Deluca
, p. 150 - 171 (2007/10/02)
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
