Details for Patent: 7,135,571
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Title: | Processes for preparing anhydrous and hydrate forms of antihistaminic piperidine derivatives, polymorphs and pseudomorphs thereof |
Abstract: | The present invention is related to novel processes for preparing anhydrous and hydrated forms of piperidine derivatives, polymorphs and pseudomorphs thereof of the formulas ##STR00001## which are useful as antihistamines, antiallergic agents and bronchodilators. |
Inventor(s): | Henton; Daniel R (Midland, MI), McCarty; Frederick J (Cincinnati, OH), Tripp; Susan I (Lee's Summit, MO), DeWitt; Jill E (Kansas City, MO) |
Assignee: | Aventis Pharmaceuticals, Inc. (Bridgewater, NJ) |
Filing Date: | Jun 03, 2002 |
Application Number: | 10/160,883 |
Claims: | 1. Form II hydrated 4-[4-[4-(Hydroxydiphenylmethyl)-1-piperidinyl]-1-hydroxybutyl]-.alpha.,.a- lpha.-dimethylbenzeneacetic acid hydrochloride. |