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228716-35-6

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228716-35-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 228716-35-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,8,7,1 and 6 respectively; the second part has 2 digits, 3 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 228716-35:
(8*2)+(7*2)+(6*8)+(5*7)+(4*1)+(3*6)+(2*3)+(1*5)=146
146 % 10 = 6
So 228716-35-6 is a valid CAS Registry Number.

228716-35-6Downstream Products

228716-35-6Relevant articles and documents

Aspects of the chemistry of functionalized 1-phenylpyrazoles available from 1,2-diaza-1,3-butadienes and 2-phenylazo-1,3-dicarbonyl compounds

Attanasi, Orazio A.,Filippone, Paolino,Fiorucci, Chiara,Mantellini, Fabio

, p. 3891 - 3894 (2007/10/03)

In the presence of sodium hydride, treatment of 1,2-diaza-1,3-butadienes with 2-phenylazo-1,3-dicarbonyl compounds gave rise to functionalized 1- phenylpyrazole derivatives in good to excellent yields. Pyrazolo[3,4-d]1,6- dihydropyridazin-6(2H)-one derivatives were obtained by the reaction of 5- methyl-4-methoxycarbonyl-3-acetyl-1-phenylpyrazole with different hydrazines.

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