188948-95-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 188948-95-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,8,9,4 and 8 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 188948-95:
(8*1)+(7*8)+(6*8)+(5*9)+(4*4)+(3*8)+(2*9)+(1*5)=220
220 % 10 = 0
So 188948-95-0 is a valid CAS Registry Number.
188948-95-0Relevant articles and documents
An efficient stereoselective synthesis of 1α,24(R)-dihydroxyvitamin D3 by the dienyne route
Fall, Yagamare,Torneiro, Mercedes,Castedo, Luis,Mourino, Antonio
, p. 4703 - 4714 (1997)
1α,24(R)-Dihydroxyvitamin D3 (5e) was synthesized. The key step in the preparation of the side-chain was opening of the chiral epoxide 10 by the α-anion of the nitrile 9. The triene system was synthesized by the dienyne route.
