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98908-58-8

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98908-58-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 98908-58-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,8,9,0 and 8 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 98908-58:
(7*9)+(6*8)+(5*9)+(4*0)+(3*8)+(2*5)+(1*8)=198
198 % 10 = 8
So 98908-58-8 is a valid CAS Registry Number.

98908-58-8Relevant articles and documents

Solution syntheses of two enkephalin-containing peptides, peptide E and dynorphin(1-24), using N(in)-(2,4,6-triisopropylphenylsulfonyl)tryptophan

Kitagawa,Kawamoto,Futaki,Kiyama,Akita,Moritoki,Kiso

, p. 2631 - 2638 (2007/10/02)

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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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