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165543-77-1

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165543-77-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 165543-77-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,5,5,4 and 3 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 165543-77:
(8*1)+(7*6)+(6*5)+(5*5)+(4*4)+(3*3)+(2*7)+(1*7)=151
151 % 10 = 1
So 165543-77-1 is a valid CAS Registry Number.

165543-77-1Relevant articles and documents

Ynamide-Mediated Thionoester and Dithioester Syntheses

Yao, Chaochao,Yang, Jinhua,Lu, Xiaobiao,Zhang, Shuyu,Zhao, Junfeng

, p. 6628 - 6631 (2020)

A novel ynamide-mediated synthesis of thionoesters and dithioesters is described. The selective addition reactions of various monothiocarboxylic acids with ynamide furnish α-thioacyloxyenamides, which undergo transesterification with nucleophilic -OH or -SH species to afford thionoesters and dithioesters, respectively. The broad substrate scope, mild reaction conditions, and excellent yields make this method an attractive synthetic approach to thionoesters and dithioesters.

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