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512173-24-9

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512173-24-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 512173-24-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,1,2,1,7 and 3 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 512173-24:
(8*5)+(7*1)+(6*2)+(5*1)+(4*7)+(3*3)+(2*2)+(1*4)=109
109 % 10 = 9
So 512173-24-9 is a valid CAS Registry Number.

512173-24-9Relevant articles and documents

Direct amide bond formation from carboxylic acids and amines using activated alumina balls as a new, convenient, clean, reusable and low cost heterogeneous catalyst

Ghosh, Sabari,Mukhopadhyay, Chhanda,Bhaumik, Asim,Mondal, John,Mallik, Amit,Sengupta, Sumita

, p. 3220 - 3229,10 (2020/09/16)

For the first time, we have used activated alumina balls (3-5 mm diameter) for amide synthesis from carboxylic acids (unactivated) and amines (unactivated) under neat reaction conditions that produce no toxic by-products and has the advantages of being low-cost, easily available, heterogeneous, reusable and environmentally benign with no troublesome/hazardous disposal of the catalyst.

Catalytic transamidation and amide metathesis under moderate conditions

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Page 3; Sheet 5, (2008/06/13)

Disclosed is a method of manipulating the carboxamide functionality in a catalytic manner. The method includes the steps of reacting amides with or without amines in the presence of various types of metal catalysts, at a temperature of about 250° C. or less.

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