138325-25-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138325-25-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,3,2 and 5 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 138325-25:
(8*1)+(7*3)+(6*8)+(5*3)+(4*2)+(3*5)+(2*2)+(1*5)=124
124 % 10 = 4
So 138325-25-4 is a valid CAS Registry Number.
138325-25-4Relevant articles and documents
A Radical Cyclization Approach to 1α,25-Dihydroxyvitamin D3
Batty, Duncan,Crich, David
, p. 2894 - 2896 (2007/10/02)
An approach to 1α,25-dihydroxyvitamin D3 involving the preparation of the vinyl selenide 8, its cyclization to 9 with tributyltin hydride and the conversion of the latter into the known isomeric dienes 3 and 10 is described.
