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91177-54-7

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91177-54-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91177-54-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,1,7 and 7 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 91177-54:
(7*9)+(6*1)+(5*1)+(4*7)+(3*7)+(2*5)+(1*4)=137
137 % 10 = 7
So 91177-54-7 is a valid CAS Registry Number.

91177-54-7Relevant articles and documents

Synthesis of Peptides with α,β-Dehydroamino Acids, I. - Synthesis of N-Benzyloxycarbonyl and N-Trifluoroacetyl Dipeptides of Dehydroalanine and Dehydrophenylalanine

Makowski, Maciej,Rzeszotarska, Barbara,Kubica, Zbigniew,Wieczorek, Piotr

, p. 920 - 928 (2007/10/02)

Condensation of amides of N-(benzyloxycarbonyl)- and N-(trifluoroacetyl)amino acid with pyruvic and phenylpyruvic acid yields, in the presence of p-toluenesulfonic acid as a catalyst, N-(benzyloxycarbonyl)- and N-(trifluoroacetyl)dehydro dipeptides with C

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