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81925-64-6

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81925-64-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81925-64-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,9,2 and 5 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 81925-64:
(7*8)+(6*1)+(5*9)+(4*2)+(3*5)+(2*6)+(1*4)=146
146 % 10 = 6
So 81925-64-6 is a valid CAS Registry Number.

81925-64-6Relevant articles and documents

Metal-Free Selective Modification of Secondary Amides: Application in Late-Stage Diversification of Peptides

Adebomi, Victor,Sriram, Mahesh,Streety, Xavier,Raj, Monika

supporting information, p. 6189 - 6193 (2021/08/01)

Here we solve a long-standing challenge of the site-selective modification of secondary amides and present a simple two-step, metal-free approach to selectively modify a particular secondary amide in molecules containing multiple primary and secondary amides. Density functional theory (DFT) provides insight into the activation of C-N bonds. This study encompasses distinct chemical advances for late-stage modification of peptides thus harnessing the amides for the incorporation of various functional groups into natural and synthetic molecules.

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