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63874-50-0

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63874-50-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 63874-50-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,3,8,7 and 4 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 63874-50:
(7*6)+(6*3)+(5*8)+(4*7)+(3*4)+(2*5)+(1*0)=150
150 % 10 = 0
So 63874-50-0 is a valid CAS Registry Number.

63874-50-0Relevant articles and documents

Antiallergy agents. I. 1,6-dihydro-6-oxo-2-phenylpyrimidine-5-carboxylic acids and esters

Juby,Hudyma,Brown,et al.

, p. 263 - 269 (2007/10/08)

The synthesis of some 1,6-dihydro-6-oxo-2-phenylpyrimidine-5-carboxylic acids and esters with potent oral and intravenous antiallergic activity against passive cutaneous anaphylaxis in the rat is described. Requirements for high activity include a free NH group in the pyrimidinone nucleus and a small to medium size ortho alkoxy or alkenyloxy group on the phenyl ring. It is suggested that in the case of the highly active compounds hydrogen bonding occurs between a nitrogen of the pyrimidine ring and the ethereal oxygen. The nature of this bonding and its possible contribution to an optimum configuration for the molecules is discussed.

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