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135387-91-6

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135387-91-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 135387-91-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,5,3,8 and 7 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 135387-91:
(8*1)+(7*3)+(6*5)+(5*3)+(4*8)+(3*7)+(2*9)+(1*1)=146
146 % 10 = 6
So 135387-91-6 is a valid CAS Registry Number.

135387-91-6Relevant articles and documents

Solid-phase synthesis using (Allyloxy)carbonyl(Alloc) chemistry of a putative heptapeptide intermediate in vancomycin biosynthesis containing m-chloro-3-hydroxytyrosine

Freund, Ernst,Vitali, Francesca,Linden, Anthony,Robinson, John A.

, p. 2572 - 2579 (2007/10/03)

A convenient method for the solid-phase synthesis of putative linear heptapeptide intermediates in vancomycin biosynthesis is described, in particular, the heptapeptide D-Leu-Cyt-L-Asn-Hpg-Hpg-Cyt'-Dhpg (Cyt = (2R,3R)-m-chloro-3-hydroxytyrosine, Hpg = (R)-2-(p-hydroxyphenyl)glycine, Cyt' = (2S,3R)-m-chloro-3-hydroxytyrosine and Dhpg = (S)-2-(3,5-dihydroxyphenyl)glycine). The synthesis was performed on chlorotrityl resin and employed the (allyloxy)carbonyl protecting group for temporary N(α) protection during peptide-chain assembly.

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