6247-77-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6247-77-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,2,4 and 7 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 6247-77:
(6*6)+(5*2)+(4*4)+(3*7)+(2*7)+(1*7)=104
104 % 10 = 4
So 6247-77-4 is a valid CAS Registry Number.
InChI:InChI=1/C20H32O2/c1-19-11-4-3-5-13(19)6-7-14-15-8-9-17(18(21)22)20(15,2)12-10-16(14)19/h13-17H,3-12H2,1-2H3,(H,21,22)
6247-77-4Relevant articles and documents
SYNTHESES OF 17β-(2-MALEIMIDO)ANDROSTANES
Drasar, Pavel,Havel, Miroslav
, p. 1976 - 1982 (2007/10/02)
Starting from pregnane derivatives, 17β-(2-maleimido)androstanes of 5α- and Δ5-series, with and without a 3β-acetoxy group, were prepared via methyl 3-androstanyl-3-cyano acrylates.The maleimidoandrostanes were synthesized as models for cardiotonic steroids.