103151-18-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 103151-18-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,3,1,5 and 1 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 103151-18:
(8*1)+(7*0)+(6*3)+(5*1)+(4*5)+(3*1)+(2*1)+(1*8)=64
64 % 10 = 4
So 103151-18-4 is a valid CAS Registry Number.
103151-18-4Relevant academic research and scientific papers
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.
