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28623-70-3

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28623-70-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 28623-70-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,6,2 and 3 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 28623-70:
(7*2)+(6*8)+(5*6)+(4*2)+(3*3)+(2*7)+(1*0)=123
123 % 10 = 3
So 28623-70-3 is a valid CAS Registry Number.

28623-70-3Relevant articles and documents

Amine Activation: Synthesis of N-(Hetero)arylamides from Isothioureas and Carboxylic Acids

Zhu, Yan-Ping,Sergeyev, Sergey,Franck, Philippe,Orru, Romano V. A.,Maes, Bert U. W.

supporting information, p. 4602 - 4605 (2016/09/28)

A novel method for N-(hetero)arylamide synthesis based on rarely explored amine activation, rather than classical acid activation, is reported. The activated amines are easily prepared using a three-component reaction with commercial reagents. The new method shows a broad scope including challenging amides not (efficiently) accessible via classical protocols.

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