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37622-41-6

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37622-41-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 37622-41-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,7,6,2 and 2 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 37622-41:
(7*3)+(6*7)+(5*6)+(4*2)+(3*2)+(2*4)+(1*1)=116
116 % 10 = 6
So 37622-41-6 is a valid CAS Registry Number.

37622-41-6Relevant articles and documents

Direct synthesis of esters and amides from unprotected hydroxyaromatic and -aliphatic carboxylic acids

Katritzky, Alan R.,Singh, Sanjay K.,Cai, Chunming,Bobrov, Sergey

, p. 3364 - 3374 (2007/10/03)

A facile method for the activation of hydroxy-substituted carboxylic acids using benzotriazole chemistry without prior protection of the hydroxy substituents is presented. The N-acylbenzotriazole intermediates 2a-g, 6a-d, and 9a-c have been used for high-yielding synthesis of both aliphatic (3a-1) and aromatic (7a-h, 10a-f) hydroxy carboxamides. High yields of aromatic hydroxy esters 12a-h and 13a-i were obtained using either neat alcohols in neutral microwave conditions or nucleophilic alkoxides and the intermediate N-(arylacyl)benzotriazoles. Moderate yields were obtained in the case of aliphatic hydroxy esters 11a,b and thiolesters 11e-g from the intermediates 2a-c.

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