188949-01-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 188949-01-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,8,9,4 and 9 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 188949-01:
(8*1)+(7*8)+(6*8)+(5*9)+(4*4)+(3*9)+(2*0)+(1*1)=201
201 % 10 = 1
So 188949-01-1 is a valid CAS Registry Number.
188949-01-1Relevant 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 (2007/10/03)
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.
