939963-12-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 939963-12-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,3,9,9,6 and 3 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 939963-12:
(8*9)+(7*3)+(6*9)+(5*9)+(4*6)+(3*3)+(2*1)+(1*2)=229
229 % 10 = 9
So 939963-12-9 is a valid CAS Registry Number.
939963-12-9Relevant articles and documents
THE SYNTHESES OF (R)-(+)-β-VANILLYL-γ-BUTYROLACTONE AND OF CHIRAL LIGNANS THEREFROM
Brown, Eric,Daugan, Alain
, p. 1169 - 1172 (1987)
(R)-(+)-β-vanillyl-γ-butyrolactone was obtained in 4 steps including a resolution, from vanillin and dimethyl succinate, and was used for the total syntheses of 5 naturally occurring and optically active lignans such as (+)-isolariciresinol 20.