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654-83-1

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654-83-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 654-83-1 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 6,5 and 4 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 654-83:
(5*6)+(4*5)+(3*4)+(2*8)+(1*3)=81
81 % 10 = 1
So 654-83-1 is a valid CAS Registry Number.

654-83-1Relevant articles and documents

Nickel-Catalyzed Direct C-H Trifluoromethylation of Free Anilines with Togni's Reagent

Gao, Xianying,Geng, Yang,Han, Shuaijun,Liang, Apeng,Li, Jingya,Zou, Dapeng,Wu, Yusheng,Wu, Yangjie

, p. 3732 - 3735 (2018)

An efficient nickel-catalyzed C-H trifluoromethylation for the synthesis of trifluoromethylated free anilines using Togni's reagent has been developed. This approach exhibits a good functional group tolerance, good regioselectivity, and chemoselectivity under mild conditions. The newly developed economical one-step method is a better alternative to synthesize trifluoromethylated free anilines.

SMALL MOLECULE INHIBITORS OF GALECTIN-3

-

Page/Page column 393, (2019/04/26)

The present disclosure relates to compounds of formula I, which inhibit Gal-3, and include pharmaceutically acceptable salts, compositions comprising such compounds, and methods using and making such compounds and compositions.

Reactions of Trifluoromethyl Bromide and Related Halides: Part 10. Perfluoroalkylation of Aromatic Compounds induced by Sulphur Dioxide Radical Anion Precursors

Tordeux, Marc,Langlois, Bernard,Wakselman, Claude

, p. 2293 - 2299 (2007/10/02)

Perfluoroalkylation of electron-rich aromatic compounds with trifluoromethyl bromide, or long-chain perfluoroalkyl iodides, was performed in the presence of sodium dithionite or zinc-sulphur dioxide.This alkylation occurred at the ortho and para positions relative to the amino or hydroxy substitutent.Pyrroles were perfluoroalkylated regioselectively at the 2-position.This alkylation was interpreted as a radical aromatic substitution; the formation of the perfluoroalkyl radical can be induced by a single-electron transfer from sulphur dioxide radical anion to the perfluoroalkyl halide.

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