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diphthaloyltetramethylgramicidin S is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

94989-13-6

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94989-13-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 94989-13-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,4,9,8 and 9 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 94989-13:
(7*9)+(6*4)+(5*9)+(4*8)+(3*9)+(2*1)+(1*3)=196
196 % 10 = 6
So 94989-13-6 is a valid CAS Registry Number.

94989-13-6Relevant academic research and scientific papers

SELECTIVE N-METHYLATION OF PEPTIDE BOND. PREPARATION AND PROPERTIES OF 2,2', D-MePhe4,4'> GRAMICIDIN S

Kawai, Masao,Ohya, Masashi,Butsugan, Yasuo,Saito, Kazuki,Higashijima, Tsutomu

, p. 1835 - 1836 (2007/10/02)

Diphthaloyl derivative of gramicidin S was subjected to selective N-methylation using CH3I-Ag2O in DMF.Methylation occurred exclusively at ornithine and D-phenylalanine residues affording tetra-N-methylated product in high yield.Removal of the phthaloyl g

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