Inventors list |
Assignees list |
Classification tree browser |
Top 100 Inventors |
Top 100 Assignees |
SYMED LABS LIMITED
| SYMED LABS LIMITED Patent applications | ||
| Patent application number | Title | Published |
|---|---|---|
| 20090281318 | PROCESS FOR PREPARATION OF SUBSTANTIALLY OPTICALLY PURE LEVOROTATORY AND DEXTROROTATORY ENANTIOMERS OF CETIRIZINE USING NOVEL INTERMEDIATES - The present invention relates to a novel and commercially viable process for substantially optically pure levorotatory and dextrorotatory enantiomers of cetirizine intermediate, 1-[(4-chlorophenyl)phenylmethyl]piperazine, thereby producing substantially optically pure levorotatory and dextrorotatory enantiomers of cetirizine and their pharmaceutical acceptable acid addition salts thereof in high purity and in high yield using novel intermediates. | 11-12-2009 |