87223-78-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 87223-78-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,2,2 and 3 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 87223-78:
(7*8)+(6*7)+(5*2)+(4*2)+(3*3)+(2*7)+(1*8)=147
147 % 10 = 7
So 87223-78-7 is a valid CAS Registry Number.
87223-78-7Relevant academic research and scientific papers
Pyridopyrimidoindoles. A New Heterocyclic Ring System
Unangst, Paul C.
, p. 495 - 499 (2007/10/02)
The preparation of the novel pyridopyrimidoindole ring system is described via fusion at 180 deg C of ethyl 3-amino-1H-indole-2-carboxylate 8a and several 6-chloronicotinic acid derivatives.Similar fusion of 8a and thiourea yielded a 2-m
