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128421-83-0

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128421-83-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128421-83-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,4,2 and 1 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 128421-83:
(8*1)+(7*2)+(6*8)+(5*4)+(4*2)+(3*1)+(2*8)+(1*3)=120
120 % 10 = 0
So 128421-83-0 is a valid CAS Registry Number.

128421-83-0Relevant articles and documents

Construction of Thioamide Peptide via Sulfur-Involved Amino Acids/Amino Aldehydes Coupling

Jiang, Xuefeng,Liao, Yanyan

supporting information, p. 8862 - 8866 (2021/11/24)

A sulfur-involved ligation for thioamide quasi-peptides was developed via amino acids and amino aldehydes coupling. The key to the transformation was the chelation of copper with imines for chiral activation and fixation. In this environment, linear polys

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