121898-91-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121898-91-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,8,9 and 8 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 121898-91:
(8*1)+(7*2)+(6*1)+(5*8)+(4*9)+(3*8)+(2*9)+(1*1)=147
147 % 10 = 7
So 121898-91-7 is a valid CAS Registry Number.
121898-91-7Relevant academic research and scientific papers
Synthesis of 2-Hetaryl-6H-pyrazolo-1,2,3-triazoles
Rangnekar, D. W.,Dhamnaskar, S. V.
, p. 1663 - 1664 (2007/10/02)
A novel efficient synthesis of 2-hetaryl-4-methyl-6-phenyl-6H-pyrazolo-1,2,3-triazoles was achieved by the reaction of 5-amino-3-methyl-4-nitroso-1-phenyl-1H-pyrazole with heterocyclic amines followed by air oxidation in the presence of cupric acet
