99940-80-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99940-80-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,9,4 and 0 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 99940-80:
(7*9)+(6*9)+(5*9)+(4*4)+(3*0)+(2*8)+(1*0)=194
194 % 10 = 4
So 99940-80-4 is a valid CAS Registry Number.
99940-80-4Relevant academic research and scientific papers
SYNTHESIS OF UNSYMMETRICALLY SUBSTITUTED 2,5-PIPERAZINEDIONES: REGIOSELECTIVE ALKYLATION OF PIPERAZINEDIONE DERIVATIVES
Fukuyama, Tohru,Frank, R. Keith,Laird, Alison A.
, p. 2955 - 2958 (2007/10/02)
A variety of unsymmetrically substituted 2,5-piperazinediones have been synthesized by regioselective alkylation of piperazinedione derivatives.
