89314-29-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 89314-29-4 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, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 89314-29:
(7*8)+(6*9)+(5*3)+(4*1)+(3*4)+(2*2)+(1*9)=154
154 % 10 = 4
So 89314-29-4 is a valid CAS Registry Number.
89314-29-4Relevant 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.