137267-53-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137267-53-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,2,6 and 7 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 137267-53:
(8*1)+(7*3)+(6*7)+(5*2)+(4*6)+(3*7)+(2*5)+(1*3)=139
139 % 10 = 9
So 137267-53-9 is a valid CAS Registry Number.
137267-53-9Relevant academic research and scientific papers
An approach to 1-aryl-1,2,4-triazoles
Buzykin,Bredikhina
, p. 59 - 61 (2007/10/02)
A series of different 1,3,5-trisubstituted 1,2,4-triazoles 9 have been readily prepared by simple oxidation of corresponding N-alkylamide arylhydrazones (amidrazones) 5 with hydrogen peroxide or potassium permanganate.
