87880-23-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 87880-23-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,8,8 and 0 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 87880-23:
(7*8)+(6*7)+(5*8)+(4*8)+(3*0)+(2*2)+(1*3)=177
177 % 10 = 7
So 87880-23-7 is a valid CAS Registry Number.
87880-23-7Relevant academic research and scientific papers
Quaternary Salts of 2H-Imidazoles
Katritzky, Alan R.,Borja, Susana Bravo,Marquet, Jorge,Sammes, Michael P.
, p. 2065 - 2069 (2007/10/02)
Treatment of the 4,5-diphenyl-2H-imidazoles (1a-e) with alkyl iodides gives novel 1H+,2H-imidazolium salts (2) and (3).The metho-salt (2) N-methyl protons are readily exchanged for deuterium, and anions formed by the action of base give, with m
