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| Number | Title | Issue Date |
| 7619087 | Method of preparation of oxycodone A method of preparation of Oxycodone of formula I by reacting thebaine of formula II, or its analogue of formula III, wherein R represents a C2 to C5 alkyl, an alkylaryl, preferably benzyl, methoxybenzyl, or allyl, with hydrogen peroxide or per... | 11/17/2009 |
| 7534895 | Process for preparation of carvedilol The invention solves a new method of preparation of Carvedilol for pharmaceutical use. In the synthesis of Carvedilol a reaction of 4-(oxirane-2-ylmethoxy)-9H-arbazole (II) with 2-(2-methoxyphenoxy)ethylamine salts (IV) in the presence of a base, in an alcohol havin... | 05/19/2009 |
