198716-01-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 198716-01-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,8,7,1 and 6 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 198716-01:
(8*1)+(7*9)+(6*8)+(5*7)+(4*1)+(3*6)+(2*0)+(1*1)=177
177 % 10 = 7
So 198716-01-7 is a valid CAS Registry Number.
198716-01-7Relevant academic research and scientific papers
Syntheis of Some New Pyrazolotriazines, Pyrazolothiazines and Pyrazolopyrimidines
El-Dean, A. M. Kamal,Geies, A. A.
, p. 2255 - 2269 (2007/10/03)
When the pyrazole derivatives 3a,b were treated with triethyl orthoformate, the pyrazolotriazinethiones 5a,b were obtained.These were S-alkylated to give compounds 6a-d.Treatment of 5a,b with hydrazine hydrate in ethanol afforded 7,8 respectively.Benzylid
