957354-73-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 957354-73-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,5,7,3,5 and 4 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 957354-73:
(8*9)+(7*5)+(6*7)+(5*3)+(4*5)+(3*4)+(2*7)+(1*3)=213
213 % 10 = 3
So 957354-73-3 is a valid CAS Registry Number.
957354-73-3Relevant articles and documents
Straightforward copper-catalyzed synthesis of pyrrolopyrazoles from halogenated pyrazolecarbaldehydes
Nayak, Maloy,Batchu, Harikrishna,Batra, Sanjay
, p. 4206 - 4208 (2012/08/28)
Straightforward synthesis of a variety of pyrrolo-fused pyrazoles via a cascade reaction between halopyrazolecarbaldehydes and ethylisocyanoacetate in the presence of copper and a base is described.