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207744-21-6

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207744-21-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 207744-21-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,7,7,4 and 4 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 207744-21:
(8*2)+(7*0)+(6*7)+(5*7)+(4*4)+(3*4)+(2*2)+(1*1)=126
126 % 10 = 6
So 207744-21-6 is a valid CAS Registry Number.

207744-21-6Upstream product

207744-21-6Relevant articles and documents

Asymmetric reduction of (Z)-α,β-dehydrotryptophanyl-containing biological peptides with sulfur functionality. Influence of substrate on stereoselectivity

Hammadi, Akli,Lam, Hubert,Gondry, Muriel,Ménez, André,Genet, Roger

, p. 4473 - 4477 (2000)

Two (Z)-α,β-dehydropentapeptides, Boc-βAla-Δ(Z) Trp-Met-Asp-Phe-NH2 1 and Boc-AlaΔ(Z)-Trp-NLeu-Asp-Phe-NH2 2, have been synthesized by enzymatic α,β-dehydrogenation, and then submitted to rhodium-catalysed asymmetric hydrogenation. The influence of the S-atom on the rate and stereoselectivity of the reduction have been investigated. (C) 2000 Elsevier Science Ltd.

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