57031-40-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57031-40-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,0,3 and 1 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 57031-40:
(7*5)+(6*7)+(5*0)+(4*3)+(3*1)+(2*4)+(1*0)=100
100 % 10 = 0
So 57031-40-0 is a valid CAS Registry Number.
57031-40-0Relevant academic research and scientific papers
Stereochemical course of hydroboration of highly hindered steroidal olefins. A ready synthesis of 14β- and 8α,14β-steroids
Anastasia,Allevi,Fiecchi,Oleotti,Scala
, p. 131 - 141 (2007/10/02)
Hydroboration of 5α-cholest-8-ene, 5α,14β-cholest-8-ene and 5α,14β-cholest-7-ene provides a simple route to oxygenated steroids with 14β- and 8α,14β- unnatural stereochemistry.
