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79224-20-7

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79224-20-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 79224-20-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,9,2,2 and 4 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 79224-20:
(7*7)+(6*9)+(5*2)+(4*2)+(3*4)+(2*2)+(1*0)=137
137 % 10 = 7
So 79224-20-7 is a valid CAS Registry Number.

79224-20-7Downstream Products

79224-20-7Relevant articles and documents

Phase-Transfer Catalyzed Synthesis of Amides and Esters of Carboxylic Acids

Jaszay, Zsuzsa M.,Petnehazy, Imre,Toeke, Laszlo

, p. 745 - 747 (2007/10/02)

A convenient one-pot procedure is reported for the preparation of carboxamides and carboxylic acid esters from carboxylic acids and amines or alcohols, respectively.The carboxylic acids are activated by sulfonyl chlorides under solid-liquid phase-transfer conditions using solid potassium carbonate as base and a lipophilic quaternary ammonium salt as catalyst.

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