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693257-41-9

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693257-41-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 693257-41-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,9,3,2,5 and 7 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 693257-41:
(8*6)+(7*9)+(6*3)+(5*2)+(4*5)+(3*7)+(2*4)+(1*1)=189
189 % 10 = 9
So 693257-41-9 is a valid CAS Registry Number.

693257-41-9Upstream product

693257-41-9Relevant articles and documents

Salicylanilides as inhibitors of the protein tyrosine kinase epidermal growth factor receptor

Liechti, Christoph,Sequin, Urs,Bold, Guido,Furet, Pascal,Meyer, Thomas,Traxler, Peter

, p. 11 - 26 (2007/10/03)

A pharmacophore model for ATP-competitive inhibitors interacting with the active site of the EGFR protein tyrosine kinase and a putative binding mode of 4-anilinoquinazoline suggest that a salicylic acid function could serve as the pharmacophore replacement of a pyrimidine ring. Superpositions by CAMM of salicylanilides with the potent EGFR tyrosine kinase inhibitor 4-[(3′-chlorophenyl)amino]-6,7-dimethoxyquinazoline showed that salicylanilides should act as tyrosine kinase inhibitors. A series of salicylanilides was synthesized and their inhibitory activity against tyrosine kinases determined. Some of them indeed proved to be potent and selective EGFR tyrosine kinase inhibitors. The most potent ones being 28, 16, 20, 6, and 15, with IC50 in the 23-71 nM range.

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