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81912-53-0

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81912-53-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81912-53-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,9,1 and 2 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 81912-53:
(7*8)+(6*1)+(5*9)+(4*1)+(3*2)+(2*5)+(1*3)=130
130 % 10 = 0
So 81912-53-0 is a valid CAS Registry Number.

81912-53-0Relevant 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.

A NEW CHIRAL RECOGNITION IN AMINOLYSIS OF 3-ACYL-4(R)-METHOXYCARBONYL-1,3-THIAZOLIDINE-2-THIONE WITH RACEMIC AMINES

Nagao, Yoshimitsu,Yagi, Masahiro,Ikede, Takao,Fujita, Eiichi

, p. 201 - 204 (2007/10/02)

A chiral recognition was observed in aminolysis of 3-acyl-4(R)-methoxycarbonyl-1,3-thiazolidine-2-thione 1 by racemic amine 2 to give an optically active amide (S-excess) and amine (R-excess).

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