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84814-43-7

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84814-43-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 84814-43-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,4,8,1 and 4 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 84814-43:
(7*8)+(6*4)+(5*8)+(4*1)+(3*4)+(2*4)+(1*3)=147
147 % 10 = 7
So 84814-43-7 is a valid CAS Registry Number.

84814-43-7Relevant articles and documents

PEPTIDE BOND FORMATION BY INTERMOLECULAR AMINOLYSIS OF D-GLUCOPYRANOSYL ESTERS OF AMINO ACIDS

Horvat, Stefica,Keglevic, Dina

, p. 89 - 96 (2007/10/02)

The reaction of HO-protected and -unprotected D-glucopyranosyl esters of N-acylamino acids (Gly, Ala, Phe) with glycine and phenylalanine methyl esters in N,N-dimethylformamide at 38 deg C and dichloromethane at 40 deg C, respectively, led to repture of the C-1 ester bond and formation of the corresponding N-acyldipeptide methyl ester.The relative reactivity of the C-1 ester bond toward aminolysis was greatly influenced by the structure of the amino acid nucleophile, the nature of the aglycon side-chain group, and the anomeric configuration of the D-glucopyranosyl ester involved.Evidence for a substantially lower acylating efficiency of the ester at C-2, as compared to that at C-1, was obtained by aminolysis of two fully acetylated 2-O-(acylaminoacyl)-β-D-glucopyranoses.Treatment of 1-O-(glycylglycylglycyl)-β-D-glucopyranose with phenylalanine methyl ester in N,N-dimethylformamide led to parallel hydrolysis and intermolecular aminolysis, to give the tripeptide and tetrapeptide methyl ester.

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