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18049-66-6

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18049-66-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 18049-66-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,0,4 and 9 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 18049-66:
(7*1)+(6*8)+(5*0)+(4*4)+(3*9)+(2*6)+(1*6)=116
116 % 10 = 6
So 18049-66-6 is a valid CAS Registry Number.

18049-66-6Downstream Products

18049-66-6Relevant articles and documents

Peptide Synthesis Using the Pyrrole Ring as an Amino Protecting Group

Kashima, Choji,Maruyama, Tatsuya,Harada, Kazuo,Hibi, Shigeki,Omote, Yoshimori

, p. 601 - 645 (2007/10/02)

The utility of a pyrrole ring as an amino protecting group for amino acids in peptide synthesis has been studied.The N-termini of various amino acids (1) were protected with a pyrrole ring by treatment with 2,5-dimethoxytetrahydrofuran (10) to give 2-substituted 2-(1-pyrrolyl)acetic acids (11).The peptide bond between (11) and amino acid methyl ester (2) was formed using N,N'-dicyclohexylcarbodiimide, and the pyrrole ring was cleaved by ozonolysis and hydrolysis without the cleavage of a peptide bond to give the corresponding dipeptide compounds (26) in good yields.

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