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1423218-40-9

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1423218-40-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1423218-40-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,2,3,2,1 and 8 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1423218-40:
(9*1)+(8*4)+(7*2)+(6*3)+(5*2)+(4*1)+(3*8)+(2*4)+(1*0)=119
119 % 10 = 9
So 1423218-40-9 is a valid CAS Registry Number.

1423218-40-9Relevant articles and documents

PROCESS FOR THE PREPARATION OF SILODOSIN

-

, (2021/10/15)

The present invention relates to a new process of preparation of Silodosin, or a pharmaceutically acceptable salt thereof. Another aspect of the invention concerns compounds of formula II: or their pharmaceutically acceptable salts thereof, and their use for the preparation of Silodosin or a pharmaceutically acceptable salt thereof.

METHOD OF PREPARING ADRENERGIC ANTAGONIST

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, (2016/10/10)

PROBLEM TO BE SOLVED: To provide a method of preparing a selective adrenergic antagonist for an α-1A-adrenergic receptor and a useful intermediate thereof. SOLUTION: This invention provides an advantageous production method of a novel intermediate particularly fitted for production on an industrial scale, regarding the production of a pharmaceutical compound represented by formula (I), silodosin: 1-(3-hydroxypropyl)-5-[(2R)-({2-[2-[2-(2,2,2-trifluoroethoxy) phenoxy]ethyl}amino) propyl]indoline-7-carboxamide, or salt thereof. COPYRIGHT: (C)2015,JPOandINPIT

Enantioselective synthesis of (-)-(R) Silodosin by ultrasound-assisted diastereomeric crystallization

Barve, Indrajeet J.,Chen, Li-Hsun,Wei, Patrick C.P.,Hung, Jui-Te,Sun, Chung-Ming

, p. 2834 - 2843 (2013/04/10)

Enantioselective synthesis of clinically approved drug - Silodosin for the treatment of benign prostatic hyperplasia from the commercially available compounds 1-acetyl-5-(2-aminopropyl) indoline-7-carbonitrile A and 2-(2-(2,2,2-trifluoroethoxy)phenoxy)ethyl methanesulfonate C is explored. Key step in the synthesis is chiral resolution of intermediate 1, which was achieved by a simple diastereomeric crystallization using (S)-(+)-mandelic acid assisted by ultrasonication. The present synthetic strategy has lesser number of steps and is vastly improved the overall yield in this short route towards target compound - Silodosin.

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