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523988-37-6

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523988-37-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 523988-37-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,2,3,9,8 and 8 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 523988-37:
(8*5)+(7*2)+(6*3)+(5*9)+(4*8)+(3*8)+(2*3)+(1*7)=186
186 % 10 = 6
So 523988-37-6 is a valid CAS Registry Number.

523988-37-6Downstream Products

523988-37-6Relevant articles and documents

Enantiopure synthesis of all four stereoisomers of carbapenam-3-carboxylic acid methyl ester

Avenoza, Alberto,Barriobero, Jose I.,Busto, Jesus H.,Peregrina, Jesus M.

, p. 2889 - 2894 (2007/10/03)

The retro-Dieckmann reaction has been used as a stereodivergent synthetic tool on N-Boc-7-azabicyclo[2.2.1]heptan-2-one-1-carboxylic acid methyl ester to obtain enantiopure trans- and cis-5-(carboxymethyl)pyrrolidine-2-carboxylic acid methyl esters. These disubstituted pyrrolidines have been used as starting materials to develop concise and straightforward syntheses of all four stereoisomers of carbapenam-3-carboxylic acid methyl esters. In this way, we have confirmed unequivocally the stereochemistry of two carbapenams isolated from strains of Serratia and Erwinia species.

Diastereoselective synthesis of 3,5-trans-(+)-(3R,5R)-3-carbomethoxycarbapenam from 3-hydroxypyridine: Questioning the stereochemical assignment of the natural product

Tanaka, Hideyuki,Sakagami, Hideki,Ogasawara, Kunio

, p. 93 - 96 (2007/10/03)

An enantio- and diastereoselective synthesis of the methyl ester of 3,5-trans-(3R,5R)-carbapenam-3-carboxylic acid from 3-hydroxypyridine via (2R,5S)-trans-5-acetoxy-2-allylpiperidine has been achieved by employing the piperidine-pyrrolidine ring-contract

A chiral synthesis of trans-carbapenam-3-carboxylic acid and the assignment of (3S,5S) configuration to the corresponding product from Serratia and Erwinia species

Bycroft,Chhabra

, p. 423 - 425 (2007/10/02)

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