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83556-31-4

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83556-31-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 83556-31-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,5,5 and 6 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 83556-31:
(7*8)+(6*3)+(5*5)+(4*5)+(3*6)+(2*3)+(1*1)=144
144 % 10 = 4
So 83556-31-4 is a valid CAS Registry Number.

83556-31-4Relevant articles and documents

Direct, facile synthesis of N-acyl-α-amino amides from α-keto esters and ammonia

Ntaganda, Rukundo,Milovic, Tamara,Tiburcio, Jorge,Thadani, Avinash N.

experimental part, p. 4052 - 4054 (2009/03/11)

N-Acyl-α-amino amides were prepared, without the necessity of chromatographic purification, in a single step by heating the corresponding α-keto ester in methanolic ammonia. The Royal Society of Chemistry.

SYNTHESIS OF PEPTIDES WITH α,β-DEHYDROAMINO ACIDS. PART VII. ATTEMPTED SYNTHESIS OF Nα-PHENYLACETYL-α,β-DEHYDRODIPEPTIDES

Kubica, Zbigniew,Smelka, Leszek,Rzeszotarska, Barbara,Hermann, Peter

, p. 1421 - 1425 (2007/10/02)

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