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1204313-91-6

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1204313-91-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1204313-91-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,0,4,3,1 and 3 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1204313-91:
(9*1)+(8*2)+(7*0)+(6*4)+(5*3)+(4*1)+(3*3)+(2*9)+(1*1)=96
96 % 10 = 6
So 1204313-91-6 is a valid CAS Registry Number.

1204313-91-6Relevant articles and documents

Cinacalcet intermediate and synthesis method of cinacalcet hydrochloride

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, (2021/07/17)

The invention relates to a cinacalcet intermediate and a synthesis method of cinacalcet hydrochloride. The synthesis method of cinacalcet hydrochloride comprises the steps of (c) in an organic solvent, carrying out olefin metathesis reaction on a compound N-III and a compound B-2 under the action of a catalyst to obtain a compound C-I; (d) carrying out hydrogenation reduction reaction on the compound C-I to obtain a compound C-II; and (e) removing an amino protecting group from the compound C-II, and salifying with hydrogen chloride to obtain cinacalcet hydrochloride. The method has the advantages of high yield, high chemical purity and optical purity of the product, simple post-treatment process, simple and easily available raw materials, and facilitation of industrial production. The reaction formula is shown in the description, wherein R is selected from t-butyloxycarbonyl, benzoyl and carbobenzoxy.

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.

HIGHLY PURE CINACALCET OR A PHARMACEUTICALLY ACCEPTABLE SALT THEREOF

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Page/Page column 42-43, (2010/07/02)

Provided herein are impurities of cinacalcet, (R)-α-methyl-N-[3-[3-(trifluoromethyl) phenyl]propyl]-1-(5,6,7,8-tetrahydronaphthalene)methaneamine (tetrahydro cinacalcet impurity), (R)-α-Methyl-N-[3-[3-(trifluoromethyl)phenyl]propyl]-1- naphthalenemethaneamine-N-oxide (cinacalcet N-oxide impurity) and (R)-α-methyl-N-[3-[3- (trifiuoromethyl)phenyl]methyl]-1-naphthalenemethaneamine (benzylamine impurity); and processes for preparation and isolation thereof. Provided further herein is a highly pure cinacalcet or a pharmaceutically acceptable salt thereof substantially free of impurities, processes for the preparation thereof, and pharmaceutical compositions comprising highly pure cinacalcet or a pharmaceutically acceptable salt thereof substantially free of impurities.

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