208658-97-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 208658-97-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,8,6,5 and 8 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 208658-97:
(8*2)+(7*0)+(6*8)+(5*6)+(4*5)+(3*8)+(2*9)+(1*7)=163
163 % 10 = 3
So 208658-97-3 is a valid CAS Registry Number.
208658-97-3Relevant articles and documents
Asymmetric synthesis of a key ring a synthon for 1α-hydroxy-19-nor vitamin D
Courtney, Lawrence F.,Lange, Meinolf,Uskokovic, Milan R.,Wovkulich, Peter M.
, p. 3363 - 3366 (2007/10/03)
A diasteroselective carbonyl ene reaction on a substrate obtained from a regioselective propiolate ene reaction is described for the synthesis of 19- nor A-ring synthon 3.
