129762-40-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 129762-40-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,7,6 and 2 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 129762-40:
(8*1)+(7*2)+(6*9)+(5*7)+(4*6)+(3*2)+(2*4)+(1*0)=149
149 % 10 = 9
So 129762-40-9 is a valid CAS Registry Number.
129762-40-9Relevant academic research and scientific papers
CONVENIENT METHOD FOR THE SYNTHESIS OF 2-SUBSTITUTED NAPHTHOINDOLE-6,11-DIONES
Piskunov, A. V.,Shvartsberg, M. S.
, p. 1306 - 1307 (2007/10/02)
A convenient one-step method has been developed for the preparation of 2-substituted naphthoindole-6,11-diones entailing the addition of piperidine to 1-amino-2-acetyleneanthraquinones and subsequent cyclization of the adduct with loss of the amine
