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202467-69-4

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  • High quality 3-[[[(2S,4S)-4-mercapto-1-(4-nitrobenzyloxy)carbonyl-2-pyrrolidinyl]carbonyl]amino]benzoic acid supplier in China

    Cas No: 202467-69-4

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  • Simagchem Corporation
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  • (2S,4S)-2-{[(3-Carboxyphenyl)-amino]-carbonyl}-4-mercapto-1-(p-nitrobenzyloxycarbonyl)-1-pyrrolidine

    Cas No: 202467-69-4

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  • TIANFUCHEM--202467-69-4--High purity 3-[[[(2S,4S)-4-Mercapto-1-(4-nitrobenzyloxy)carbonyl-2-pyrrolidinyl]carbonyl]amino]benzoic acid factory price

    Cas No: 202467-69-4

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202467-69-4 Usage

Uses

3-[[[(2S,4S)-1-(4-Nitrobenzyloxycarbonyl)-4-mercaptopyrrolidin-2-yl]carbonyl]amino]benzoic Acid is an intermediate in the preparation of Ertapenem (E635000) and intermediates.

Check Digit Verification of cas no

The CAS Registry Mumber 202467-69-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,2,4,6 and 7 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 202467-69:
(8*2)+(7*0)+(6*2)+(5*4)+(4*6)+(3*7)+(2*6)+(1*9)=114
114 % 10 = 4
So 202467-69-4 is a valid CAS Registry Number.
InChI:InChI=1/C20H19N3O7S/c24-18(21-14-3-1-2-13(8-14)19(25)26)17-9-16(31)10-22(17)20(27)30-11-12-4-6-15(7-5-12)23(28)29/h1-8,16-17,31H,9-11H2,(H,21,24)(H,25,26)/t16-,17-/m0/s1

202467-69-4Relevant articles and documents

A luer Ertapenem, luer he lateral chain and its preparation method

-

, (2017/07/14)

The invention discloses ertapenem and ertapenem side chains, as well as preparation methods of ertapenem and ertapenem side chains. L-hydroxyproline is protected by p-nitrobenzyl ester to obtain (2S,4R)-4-hydroxyl-1-(((4-Nitrobenzformyl)-oxyl)caboyl)pyrrolidine-2-carboxylic acid; then 4-nitro(1S,4S)-3-oxo-2-thia-5-azabicyclo[2.2.1]heptan-5-carboxylic anhydride can be obtained, and reacts with m-aminobenzoic acid p-nitrobenzyl ester to obtain ertapenem side chain III; and the ertapenem can be synthesized through two-step chemical reaction of condensation and deprotection to the ertapenem side chain III and a raw material MAP. An ertapenem side chain I (10), an ertapenem side chain II (13) and the ertapenem side chain III (2) which are prevailing in the market can be synthesized through simple steps, without the need of ultralow temperature, industrialization is easy, and the product purity is high, and the operation is simple and convenient.

PROCESS FOR SYNTHESIZING CARBAPENEM ANTIBIOTICS

-

, (2008/06/13)

A process for synthesizing a coumpond of formula (I) or a pharmaceutically acceptable salt or ester thereof, wherein each P independently represents H or a protecting group, and R and R independently represent H, C1-10 alkyl, aryl or heteroaryl, or substituted C1-10 alkyl, aryl or heteroaryl, comprising: reacting the compounds (II) or a pharmaceutically acceptable salt or ester thereof, and (III) or a pharmaceutically acceptable salt or ester thereof, wherein X represents OP(O)(OR)2, or OSO2R, wherein R represents C1-6 alkyl, aryl or perfluoro C1-6 alkyl, in the presence of an amine selected from the group consisting of: diisopropylamine (DIPA), dicyclohexylamine (DCHA), 2,2,6,6-tetramethylpiperidine (TMP), 1,1,3,3-tetramethylguanidine (TMG), 1,8-diazabicyclo[4.3.0]undec-7-ene (DBU) and 1,5-diazabicyclo[4.3.0]non-5-ene to produce a compound of formula (I).

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