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139481-69-9

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  • High quality Thyl-2-Ethoxy-1-[[2’-(1Htetrazol-5-Yl-)Methyl]Benzimidazole]-7-Carboxylate supplier in China

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  • 2-Ethoxy-1-{{2'-(2H-tetrazol-5-yl)-[1,1'-biphenyl]-4-yl}-methyl}-1H-benzimidazole-7-carboxylic acid methyl ester

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  • 1H-Benzimidazole-7-carboxylic acid, 2-ethoxy-1-[[2'-(2H-tetrazol-5-yl)[1,1'-biphenyl]-4-yl]methyl]-, methyl ester/ LIDE PHARMA- Factory supply / Best price

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139481-69-9 Usage

Chemical Properties

Off-White Solid

Uses

Different sources of media describe the Uses of 139481-69-9 differently. You can refer to the following data:
1. Candesartan Methyl Ester (Candesartan Cilexetil EP Impurity I) is an intermediate in the preparation of Candesartan (C175575).
2. An intermediate in the preparation of Candesartan (C175575).

Check Digit Verification of cas no

The CAS Registry Mumber 139481-69-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,4,8 and 1 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 139481-69:
(8*1)+(7*3)+(6*9)+(5*4)+(4*8)+(3*1)+(2*6)+(1*9)=159
159 % 10 = 9
So 139481-69-9 is a valid CAS Registry Number.

139481-69-9SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017

1.Identification

1.1 GHS Product identifier

Product name Methyl 1-((2'-(2H-tetrazol-5-yl)-[1,1'-biphenyl]-4-yl)methyl)-2-ethoxy-1H-benzo[d]imidazole-7-carboxylate

1.2 Other means of identification

Product number -
Other names Candesartan Methyl Ester

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:139481-69-9 SDS

139481-69-9Relevant articles and documents

METHOD FOR PREPARING TRITYL CANDESARTAN

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Paragraph 0035, (2018/06/15)

The present invention uses a candesartan cyclic compound as a starting material and performs thereon a three-step reaction of forming tetrazole, hydrolysis and adding a protecting group to directly obtain trityl candesartan without separating an intermediate product via crystallization. The operating process is simple and thus is more applicable to industrial production.

PROCESS FOR PREPARATION OF CANDESART AN CILEXETIL SUBSTANTIALLY FREE OF DES-CANDESARTAN CILEXETIL IMPURITY

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Page/Page column 7, (2011/12/04)

The present invention provides a process for preparation of candeartan cilexetil substantially free of 2,3-dihydro-2-oxo-3-[[2'-(2H-tetrazol-5-yl)[l,l-biphenyl]-4- yl]methyl]-l-[[(cyclohexyloxy)carbonyl]oxy]ethylester-lH-benzimidazole-7- carboxylate (des-candesartan cilexetil) impurity.

METHOD FOR ISOLATING 5-SUBSTITUTED TETRAZOLES

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Page/Page column 4, (2009/08/18)

The invention relates to a method for isolating 5-substituted tetrazoles of general formula (I) in which R represents a substituted biphenyl radical during which the ring closure, starting from a corresponding nitrile, is carried out in organic solvents while using alkali, alkaline-earth or organotin azides. The organic phases containing the nitrile and the tetrazol are firstly mixed with water while firstly forming three liquid phases, after which the aqueous phase containing the azide and the phase containing the nitrile are separated out, and the middle organic phase containing the tetrazol is subsequently processed. In the case of ester groups to be saponified, this phase is mixed with alkali lye, after which the organic phase is separated out and the aqueous phase is acidified or otherwise, this phase is immediately acidified and purified.

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