89314-32-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 89314-32-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,3,1 and 4 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 89314-32:
(7*8)+(6*9)+(5*3)+(4*1)+(3*4)+(2*3)+(1*2)=149
149 % 10 = 9
So 89314-32-9 is a valid CAS Registry Number.
89314-32-9Relevant articles and documents
Polyfunctional pyrazoles 5*. preparative synthesis of 1-aryl-4-formylpyrazole- 3-carboxylic acids
Bratenko,Barus,Vovk
experimental part, p. 1464 - 1468 (2010/07/08)
Treatment of methyl pyruvate N-arylhydrazones with the Vilsmeier-Haack reagent gave methyl 1-aryl-4-formylpyrazole-3-carboxylates, basic hydrolysis of which yielded the corresponding acids.