Cas 628737-82-6,L-Histidine, 2-phenylhydrazide

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Check Digit Verification of cas no

The CAS Registry Mumber 628737-82-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,2,8,7,3 and 7 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 628737-82:
(8*6)+(7*2)+(6*8)+(5*7)+(4*3)+(3*7)+(2*8)+(1*2)=196
196 % 10 = 6
So 628737-82-6 is a valid CAS Registry Number.

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628737-82-6Relevant articles and documents

Condensation reaction between α-amino acid phenylhydrazides and carbonyl compounds

Verardo, Giancarlo,Geatti, Paola,Martinuzzi, Paolo,Merli, Marcello,Toniutti, Nicoletta

, p. 3840 - 3849 (2003)

The natural α-amino acid phenylhydrazides 1a-d readily react with the aldehydes 2a-d and ketones 2e-h to produce the 3-(phenylamino)imidazolidin-4-one derivatives 4 in good yields. Their structures were confirmed by X-ray structural analysis. Polycyclic s

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628737-82-6