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(3S,4S)-3-{[(1'R)-1'-t-butyldimethylsilyloxy]ethyl}-4-ethoxycarbonyl-1-p-methoxyphenyl-2-azetidinone is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

203790-60-7

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203790-60-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 203790-60-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,3,7,9 and 0 respectively; the second part has 2 digits, 6 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 203790-60:
(8*2)+(7*0)+(6*3)+(5*7)+(4*9)+(3*0)+(2*6)+(1*0)=117
117 % 10 = 7
So 203790-60-7 is a valid CAS Registry Number.

203790-60-7Relevant academic research and scientific papers

PROCESSES FOR THE PREPARATION OF PENEMS AND ITS INTERMEDIATE

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Page/Page column 21, (2008/06/13)

The present invention relates to a process for the preparation of 4-acetoxy azetidinone of Formula I, wherein R2 is hydrogen or a suitable amino protecting group and P is suitable hydroxy protecting group, and to the use of these compounds as intermediates for the preparation of ?-lactam antibiotics that possess the carbapenem and penem ring systems. 4-acetoxy azetidinone of Formula I is a key intermediate in the synthesis of ?-lactam antibiotics which are commonly prescribed antimicrobial agents having activity against a wide range of both Gram-positive and Gram-negative bacteria.

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