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1355993-09-7

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1355993-09-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1355993-09-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,5,5,9,9 and 3 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1355993-09:
(9*1)+(8*3)+(7*5)+(6*5)+(5*9)+(4*9)+(3*3)+(2*0)+(1*9)=197
197 % 10 = 7
So 1355993-09-7 is a valid CAS Registry Number.

1355993-09-7Relevant articles and documents

Copper-catalyzed oxidative trifluoromethylation of terminal alkynes and aryl boronic acids using (trifluoromethyl)trimethylsilane

Jiang, Xueliang,Chu, Lingling,Qing, Feng-Ling

, p. 1251 - 1257 (2012/03/22)

Trifluoromethylated acetylenes and arenes are widely applicable in the synthesis of pharmaceuticals and agrochemicals. In 2010, our group has reported the copper-mediated oxidative trifluomethylation of terminal alkynes and aryl boronic acids. This method allows a wide range of functional group tolerant trifluoromethylated acetylenes and arenes to be easily prepared. After the preliminary mechanistic studies of the oxidative trifluoromethylation of terminal alkyne, an efficient copper-catalyzed oxidative trifluoromethylation of terminal alkynes and aryl boronic acids has been developed. The catalytic protocol is successfully achieved by adding both the substrate and a portion of CF3TMS slowly using a syringe pump to the reaction mixture.

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