Cas 1290697-33-4,5-(p-tolyl)-1H-pyrazole-3-carbonitrile

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Check Digit Verification of cas no

The CAS Registry Mumber 1290697-33-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,9,0,6,9 and 7 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1290697-33:
(9*1)+(8*2)+(7*9)+(6*0)+(5*6)+(4*9)+(3*7)+(2*3)+(1*3)=184
184 % 10 = 4
So 1290697-33-4 is a valid CAS Registry Number.

1290697-33-4Upstream product

26974-15-2 5-(4-methylbenzene)-3-(trifluoromethyl)-1H-pyrazole

1290697-33-4Downstream Products

1290697-33-4Relevant academic research and scientific papers

Synthesis of 3-cyanopyrazoles from 3-trifluoromethyl-pyrazoles via direct ammonolysis reaction

Yan, Tao,Chen, Yanhong,Wang, Jia,Xie, Yuyuan,Yang, Chunhao

experimental part, p. 431 - 439 (2012/03/09)

A simple and green method to prepare 3-cyanopyrazoles in aqueous ammonia from easy-obtained 3-trifluoromethyl-pyrazoles was explored. Most substrates got acceptable yields. The hydrogen position of N1-H on cyanopyrazoles was assigned by X-ray crystal structure analysis.

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