121123-17-9 Usage
Chemical Properties
Solid
Uses
Different sources of media describe the Uses of 121123-17-9 differently. You can refer to the following data:
1. antidiabetic
2. Semisynthetic oral cephalosporin consisting of approx. 90:10 Z/E isomeric mixture. Antibacterial.
Check Digit Verification of cas no
The CAS Registry Mumber 121123-17-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,1,2 and 3 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 121123-17:
(8*1)+(7*2)+(6*1)+(5*1)+(4*2)+(3*3)+(2*1)+(1*7)=59
59 % 10 = 9
So 121123-17-9 is a valid CAS Registry Number.
InChI:InChI=1/C18H19N3O5S/c1-2-3-10-8-27-17-13(16(24)21(17)14(10)18(25)26)20-15(23)12(19)9-4-6-11(22)7-5-9/h2-7,12-13,17,22H,8,19H2,1H3,(H,20,23)(H,25,26)/b3-2-
121123-17-9Relevant articles and documents
A NOVEL PROCESS FOR PREPARATION OF CEFPROZIL INTERMEDIATE
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Page/Page column 7, (2008/06/13)
The present invention relates to a process for preparing a key intermediate of cefprozil and use of this intermediate in the preparation of cefprozil thereby avoiding impurity-causing self-acylation. [R-(Z)]-[4-hydroxy-α-[(3-methoxy-l-methyl-3-oxo-1-propenyl)amino]] benzeneacetic acid, mono potassium salt is reacted with ethyl chloroformate to obtain mixed anhydride which is then silylated with N,O-bis(trimethylsilyl)acetamide. The silylated compound obtained is reacted with [7-trimethylsilylamino-3-(Z/E-propen-1-yl)-3-cephem-4-carboxylic acid]trimethylsilyl ester and deprotected with aqueous hydrochloric acid to give cefprozil.