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202666-31-7

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202666-31-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 202666-31-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,2,6,6 and 6 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 202666-31:
(8*2)+(7*0)+(6*2)+(5*6)+(4*6)+(3*6)+(2*3)+(1*1)=107
107 % 10 = 7
So 202666-31-7 is a valid CAS Registry Number.

202666-31-7Relevant articles and documents

Preparation of arylmercapturic acids by S-arylation of N,N′- diacetylcystine

Krouzelka, Jan,Linhart, Igor

, p. 6336 - 6340 (2009)

A simple convenient method has been developed for the preparation of N-acetyl-S-arylcysteines based on the Chan-Lam-Evans arylation of N,N′-diacetylcystine dimethyl ester with arylboronic acids and used to synthesize a series of arylmercapturic acids. Unlike copper-mediated N-arylation, the S-arylation of neither cysteine nor cystine derivatives proceeded satisfactorily in the presence of air. Wiley-VCH Verlag GmbH & Co. KGaA.

α-Amino-β-sulphone hydroxamates as potent MMP-13 inhibitors that spare MMP-1

Becker, Daniel P,Barta, Thomas E,Bedell, Louis,DeCrescenzo, Gary,Freskos, John,Getman, Daniel P,Hockerman, Susan L,Li, Madeleine,Mehta, Pramod,Mischke, Brent,Munie, Grace E,Swearingen, Craig,Villamil, Clara I

, p. 2719 - 2722 (2007/10/03)

A series of α-amino-β-sulphone hydroxamates was prepared and evaluated for potency versus MMP-13 and selectivity versus MMP-1. Various substituents were employed on the α-amino group (P1 position), as well as different groups attached to the su

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