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3-phenyl-5-phenylazo-1H-pyrazole-4-carboxanilide is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

1638641-75-4

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1638641-75-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1638641-75-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,3,8,6,4 and 1 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1638641-75:
(9*1)+(8*6)+(7*3)+(6*8)+(5*6)+(4*4)+(3*1)+(2*7)+(1*5)=194
194 % 10 = 4
So 1638641-75-4 is a valid CAS Registry Number.

1638641-75-4Downstream Products

1638641-75-4Relevant academic research and scientific papers

Synthesis of some new pyrazole, pyrimidine, pyridazine, and their fused derivatives from 3-oxo-3,n-diphenylpropionamide

Abdelrazek, Fathy M.,Elkholy, Yehia M.,Salah, Ali M.,Abdelazeem, Nagwa M.,Metz, Peter

, p. 824 - 829 (2014/06/10)

The title compounds were obtained from the reactions of 3-oxo-3,N-diphenylpropionamide 3 with dimethylformamide dimethylacetal followed by hydrazine to afford the pyrazole 7, condensation with benzaldehyde followed by cyclocondensation with guanidine to afford the pyrimidine derivative 13, condensation with active methylenes followed by azo coupling of the products followed by cyclization to afford the pyridazines 17a, 17b. The pyridazinone 17b was explored for the synthesis of some novel pyridazine-fused heterocyclic compounds 19, 21, 24a, 24b, 24c, and 26. All structures were proved via their elemental analyses and spectral data.

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