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29647-76-5

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29647-76-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 29647-76-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,9,6,4 and 7 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 29647-76:
(7*2)+(6*9)+(5*6)+(4*4)+(3*7)+(2*7)+(1*6)=155
155 % 10 = 5
So 29647-76-5 is a valid CAS Registry Number.

29647-76-5Relevant articles and documents

Convenient synthesis of unsymmetrical N,N′-disubstituted thioureas in water

Li, Zhengyi,Chen, Yuan,Yin, Yue,Wang, Zhiming,Sun, Xiaoqiang

, p. 670 - 673 (2016/11/18)

A simple and convenient two-step method has been developed and used to synthesise 25 (4 of which are novel) unsymmetrical N,N′-disubstituted thioureas in water. Alkylamines or variously substituted arylamines reacted smoothly with phenyl chlorothionoformate at room temperature to form thiocarbamates, which were then reacted with another alkyl- or arylamine in water at reflux to afford the unsymmetrical N,N′-disubstituted thioureas in good to excellent yields. Mild conditions, simple work-up, high yields as well as using water as solvent are the major advantages of the method.

Preparation of aryl isothiocyanates via protected phenylthiocarbamates and application to the synthesis of caffeic acid (4-isothiocyanato)phenyl ester

Zhang, Xuechun,Lee, Young K.,Kelley, James A.,Burke Jr., Terrence R.

, p. 6237 - 6240 (2007/10/03)

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