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78523-94-1

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78523-94-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 78523-94-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,5,2 and 3 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 78523-94:
(7*7)+(6*8)+(5*5)+(4*2)+(3*3)+(2*9)+(1*4)=161
161 % 10 = 1
So 78523-94-1 is a valid CAS Registry Number.

78523-94-1Relevant articles and documents

Synthesis of novel 4-fluoro-2H-pyrazol-3-ylamines

Cocconcelli, Giuseppe,Ghiron, Chiara,Haydar, Simon,Micco, Iolanda,Zanaletti, Riccardo

experimental part, p. 2547 - 2555 (2010/09/18)

A new and efficient synthesis for the preparation of novel 4-fluoro-2H-pyrazol-3-ylamines is described. It involves the reaction of an acyl chloride with fluoroacetonitrile and sequential ring closure of the-fluoro-ketonitrile with hydrazine. Utilizing this synthetic protocol, we have synthesized a variety of 4-fluoro-2H-pyrazol-3-ylamines with different steric and electronic demands. Taylor & Francis Group, LLC.

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