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18618-47-8

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18618-47-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 18618-47-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,6,1 and 8 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 18618-47:
(7*1)+(6*8)+(5*6)+(4*1)+(3*8)+(2*4)+(1*7)=128
128 % 10 = 8
So 18618-47-8 is a valid CAS Registry Number.

18618-47-8Relevant articles and documents

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Rapoport,M. et al.

, p. 3489 - 3494 (1961)

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AMINO ACIDS AND PEPTIDES. VII. PREPARATION AND APPLICATION OF A WATER-SOLUBLE ACTIVE ESTER, p-TRIMETHYLAMMONIOPHENYL ESTER

Tsuji, Toshiki,Okusada, Satoshi,Maeda, Mitsuko,Kawasaki, Koichi

, p. 2214 - 2217 (2007/10/02)

A water-soluble active ester, p-trimethylammoniophenyl ester iodide, and its nitro derivative were prepared from N-procteted amino acid and the corresponding phenol derivative by the dicyclohexylcarbodiimide method.The synthetic esters were applied to the synthesis of Leuenkephalin.Keywords--water-soluble active ester; p-trimethylammoniophenyl ester iodide; Leuenkephalin; peptide synthesis

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