111423-03-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 111423-03-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,1,4,2 and 3 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 111423-03:
(8*1)+(7*1)+(6*1)+(5*4)+(4*2)+(3*3)+(2*0)+(1*3)=61
61 % 10 = 1
So 111423-03-1 is a valid CAS Registry Number.
111423-03-1Relevant articles and documents
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