87657-89-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 87657-89-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,6,5 and 7 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 87657-89:
(7*8)+(6*7)+(5*6)+(4*5)+(3*7)+(2*8)+(1*9)=194
194 % 10 = 4
So 87657-89-4 is a valid CAS Registry Number.
87657-89-4Relevant academic research and scientific papers
Reactions with heterocyclic arylazo compounds: Synthesis of new 1-azoloylimidazolones
Elfahham,Elsakka,Mohamed,Elnagdi
, p. 792 - 795 (2007/10/02)
Several new carboxamide derivatives of 1-azoloylimidazolones and 1-aryl-1,2,4-triazolones were synthesized by reaction of 2-alkoxy-4-benzylidine-2-thiazolin-5-ones and 2-alkoxy-4-phenylhydrazone-2-thiazolin-5-ones with heterocyclin amines.
