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446253-67-4

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446253-67-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 446253-67-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,4,6,2,5 and 3 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 446253-67:
(8*4)+(7*4)+(6*6)+(5*2)+(4*5)+(3*3)+(2*6)+(1*7)=154
154 % 10 = 4
So 446253-67-4 is a valid CAS Registry Number.

446253-67-4Relevant articles and documents

Studies on the application of the Passerini reaction and enzymatic procedures to the synthesis of tripeptide mimetics

Szymanski, Wiktor,Zwolinska, Magdalena,Ostaszewski, Ryszard

, p. 7647 - 7653 (2008/02/08)

A new, efficient method for the multicomponent synthesis of tripeptide mimetics is presented. Simple, chemoenzymatic transformations of Passerini reaction products enable the introduction of varied amino acid moieties into the tripeptide scaffold, with co

Staudinger ligation of α-azido acids retains stereochemistry

Soellner, Matthew B.,Nilsson, Bradley L.,Raines, Ronald T.

, p. 4993 - 4996 (2007/10/03)

The Staudinger ligation of peptides with a C-terminal phosphinothioester and N-terminal azide is an emerging method in protein chemistry. Here, the first Staudinger ligations of nonglycyl azides are reported and shown to proceed both in nearly quantitative yield and with no detectable effect on the stereochemistry at the α-carbon of the azide. These results demonstrate further the potential of the Staudinger ligation as a general method for the total synthesis of proteins from peptide fragments.

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