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111491-99-7

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111491-99-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 111491-99-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,1,4,9 and 1 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 111491-99:
(8*1)+(7*1)+(6*1)+(5*4)+(4*9)+(3*1)+(2*9)+(1*9)=107
107 % 10 = 7
So 111491-99-7 is a valid CAS Registry Number.

111491-99-7Downstream Products

111491-99-7Relevant articles and documents

α-Amino Ketones - A Contribution to the Synthesis of Optically Active Derivatives of Amino Acids and Peptides

Fittkau, Siegfried,Jahreis, Guenther,Peters, Klaus,Balaspiri, Lajos

, p. 529 - 538 (2007/10/02)

The synthesis of N-Z-protected methyl ketones from amino acids via the chloromethyl ketones and dehalogenation of the latter with zinc in glacial acetic acid is described.Deprotection of the methyl ketones results in the formation of hydrohalogenides of the α-aminoalkyl methyl ketones further converted to N-acylated peptide ketones as analogs of peptide hormones or as competitively acting substrate analogs of proteolytic enzymes.Aminoacetone is conveniently prepared as well as methyl-pyrrolidyl ketone and methyl-piperidyl ketone.

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