123647-42-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 123647-42-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,6,4 and 7 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 123647-42:
(8*1)+(7*2)+(6*3)+(5*6)+(4*4)+(3*7)+(2*4)+(1*2)=117
117 % 10 = 7
So 123647-42-7 is a valid CAS Registry Number.
123647-42-7Relevant articles and documents
SYNTHESIS OF ortho- AND para-QUINONES OF THE BENZINDOLE SERIES
Nesterova, I. N.,Grinev, A. N.,Rubtsov, N. M.
, p. 55 - 57 (2007/10/02)
Ethyl esters of α-(3-chloro-1,4-naphthoquinon-3-yl)crotonic or cinnamic acids were obtained by the reaction of 2,3-dichloro-1,4-naphthoquinone with ethyl esters of N-substituted β-aminocrotonic or β-aminocinnamic acids.These esters were converted by alkal