Abstract: The present invention relates to a process for preparing paliperidone from its intermediate 3-(2-chloroethyl)-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4H-pyrrido[1,2-a]-pyrimidin-4-one.

Abstract: The present invention provides methods of purifying montelukast, a new isolated impurity of montelukast, method for its isolation, and method of using montelukast impurity as a reference marker and a reference standard.

Abstract: Provided are alkyl ammonium crystalline salts of rosuvastatin that provide for purification of rosuvastatin and its pharmaceutically acceptable salts.

Abstract: The invention relates to diastereomerically pure rosuvastatin and processes for preparing diastereomerically pure rosuvastatin and its intermediates.

Abstract: The present invention provides methods of purifying montelukast, a new isolated impurity of montelukast, method for its isolation, and method of using montelukast impurity as a reference marker and a reference standard.

Abstract: The present invention provides a process comprising admixing a thioether with about 1.05 to about 1.6 molar equivalents of an active chlorine-containing oxidant, preferably sodium hypochlorite, and about 2.5 to about 5.0 molar equivalents of an alkali metal base; and recovering a sulfoxide that is preferably pantoprazole, lansoprazole, omeprazole, or rabeprazole. The process may further comprise contacting the sulfoxide with a source of sodium ions, preferably sodium hydroxide, to produce the sodium salt of the sulfoxide. The invention also relates to novel chlorinated derivatives of pantoprazole including 5-(difluoromethoxy)-2-[[(3,4-dimethoxy-2-pyridinyl)-chloromethyl]sulfinyl]-1H-benzimidazole and 5-(difluoromethoxy)-2-[[(3,4-dimethoxy-2-pyridinyl)-chlorohydroxymethyl]sulfinyl]-1H-benzimidazole and processes for making them. The invention also relates to processes of quantifying and identifying a compound other than pantoprazole in a mixture of pantoprazole and at least one other compound.

Abstract: The present invention provides a process for the preparation of the rosuvastatin intermediate FPP-CHO and its conversion to rosuvastatin and pharmaceutically acceptable salts thereof.

Abstract: The invention relates to diastereomerically pure rosuvastatin and processes for preparing diastereomerically pure rosuvastatin and its intermediates.

Abstract: The present invention encompasses processes for the preparation and purification of paliperidone palmitate.

Abstract: The invention relates to diastereomerically pure rosuvastatin and processes for preparing diastereomerically pure rosuvastatin and its intermediates.

Abstract: The present invention provides processes for preparing montelukast.

Abstract: The present invention provides pure paliperidone comprising less than about 0.1%, preferably less than about 0.05% and more preferably less than about 0.02%, impurity X as well as purification processes to obtain thereof.

Abstract: The present invention encompasses processes for preparing intermediates of armodafinil, and the conversion of the intermediates to armodafinil.

Abstract: The present invention provides amorphous and crystalline forms of Paliperidone, and processes for preparing thereof.

Abstract: The present invention presents crystal forms of Rosiglitazone hydrobromide, denominated Form I and Form II, methods of their preparation, as well as pharmaceutical compositions comprising these crystalline forms.

Abstract: The present invention relates to a process for preparing paliperidone from its intermediate 3-(2-chloroethyl)-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4H-pyrrido[1,2-a]-pyrimidin-4-one.

Abstract: The present invention provides pure paliperidone as well as purification processes to obtain thereof.

Abstract: The invention encompasses processes for preparing intermediates, such as R-modafinic acid or (R)-C1-2 alkyl ester, of modafinic acid, and the conversion of the intermediates to armodafinil.

Abstract: The present invention provides a process comprising admixing a thioether with about 1.05 to about 1.6 molar equivalents of an active chlorine-containing oxidant, preferably sodium hypochlorite, and about 2.5 to about 5.0 molar equivalents of an alkali metal base; and recovering a sulfoxide that is preferably pantoprazole, lansoprazole, omeprazole, or rabeprazole. The process may further comprise contacting the sulfoxide with a source of sodium ions, preferably sodium hydroxide, to produce the sodium salt of the sulfoxide. The invention also relates to novel chlorinated derivatives of pantoprazole including 5-(difluoromethoxy)-2-[[(3,4-dimethoxy-2-pyridinyl)-chloromethyl]sulfinyl]-1H-benzimidazole and 5-(difluoromethoxy)-2-[[(3,4-dimethoxy-2-pyridinyl)-chlorohydroxymethyl]sulfinyl]-1H-benzimidazole and processes for making them. The invention also relates to processes of quantifying and identifying a compound other than pantoprazole in a mixture of pantoprazole and at least one other compound.

Abstract: The invention relates to diastereomerically pure rosuvastatin and processes for preparing diastereomerically pure rosuvastatin and its intermediates.