Abstract:
The invention deals with an amorphous form of the hemicalcium salt of (3R,5R) 7-[3-phenyl- 4-phenylcarbamoyl-2-(4-fluorophenyl)-5-isopropylpyrrol-1-y1]-3,5-dihydroxyheptanoic acid (atorvastatin of formula I) with a high specific surface area, based on controlled precipitation, and its use in a medical dosage form. (I)
Abstract:
( S)-N -Methyl-3-(1-naphthyloxy)-3-(2-thienyl)propylamine hydrochloride of formula (I) is crystallized in such a way that suspension of duloxetine in a mixture of an aprotic solvent and a protic solvent is stirred at an increased temperature under simultaneous reduction of the volume proportion of the protic solvent.
Abstract:
The invention relates to new pharmaceutically acceptable salts of the well-known substance reducing coagulation of blood, prasugrel of formula (I), which are characterized by high chemical stability, and a method of their production. The prasugrel salts are prepared from prasugrel of formula (I) in the base form by reaction with an inorganic or organic acid in a suitable solvent or in mixtures of solvents. The inorganic acid means hydrobromic acid, hydrogen bromide, hydroiodic and sulphuric acid and the organic acid means cyclamic, ethane sulfonic, benzene sulfonic and 2-naphthalene sulfonic acid.
Abstract:
Co-crystals of inhibitors of tyrosine kinases, especially of Imatinib mesylate, have been found as a suitable form of API for dosage forms, both conventional and with controlled release for medicaments of the second generation. Complexes of kinase inhibitors with functionalized polysaccharides form solid dispersions suitable for pharmaceutical applications.
Abstract:
The solution relates to a method of preparation of an imatinib mesylate polymorph as an AP1 form suitable for dosage forms. Formation of new polymorphs of tyrosine kinase inhibitors proceeds depending on the conditions, said method consisting of the following steps: a) preparation of imatinib mesylate by reaction of the imalinib base and methanesulfonic acid in aqueous environment or in a water-organic solvent mixture, with optional addition of an organic solvent; b) addition of an inorganic salt in an aqueous solution, controlling the pH and ionic strength of the solution; c) crystallization process at controlled temperature. The solution also relates to the crystalline form of imatinib mesylate polymorph and use thereof. Two new polymorphous forms of Imatinib mesylate are accessible through this method, these forms are named polymorph "Z1" and "Z2". "Z1 " is characterized by peaks in the XRPD at 5,3; 7,5; 10,0; 10,6; 14,1; 15,0 and 16;6°. "Z2" is characterized by peaks in the XRPD at 5,5; 10,6; 10,9; 14.9; 17,0 and 21,9°.
Abstract:
The invention deals with new salts of the desvenlafaxine base of formula (I) with oxalic acid, the new salts being the hydrogen oxalate of formula (II) in the proportion of desvenlafaxine : oxalic acid of 1 : 1 and hemioxalate of formula (III) in the proportion of desvenlafaxine : oxalic acid of 2 : 1.
Abstract:
The invention deals with new salts of the desvenlafaxine base of formula (I) with oxalic acid, the new salts being the hydrogen oxalate of formula (II) in the proportion of desvenlafaxine : oxalic acid of 1 : 1 and hemioxalate of formula (III) in the proportion of desvenlafaxine : oxalic acid of 2 : 1.
Abstract:
The present solution relates to a coated tablet, comprising the active ingredient solifenacin succinate and the binder hydroxypropyl methyl cellulose, wherein the tablet comprises solifenacin I in the range of 3 to 10% wt. of the solifenacin base and methocel as the binder in the range of 0.5 to 5% wt., related to the core weight, wherein after 3-month stability tests at the 75% relative humidity and 40 °C an increase of the content of the N-oxide impurity of formula II is lower than 0.1% of the HPLC integrated area. Another solutions consist in a pharmaceutical preparation comprising the coated tablet packed in a blister package and a manufacturing method of the coated tablets, wherein a powder mixture containing the active ingredient and the binder is granulated by addition of water, whereafter the granulate is tabletted, the resulting tablets are coated and packed.
Abstract:
The invention deals with an amorphous form of the hemicalcium salt of (3R,5R) 7-[3-phenyl- 4-phenylcarbamoyl-2-(4-fluorophenyl)-5-isopropylpyrrol-1-y1]-3,5-dihydroxyheptanoic acid (atorvastatin of formula I) with a high specific surface area, based on controlled precipitation, and its use in a medical dosage form. (I)
Abstract:
The invention relates to new pharmaceutically acceptable salts of the well-known substance reducing coagulation of blood, prasugrel of formula (I), which are characterized by high chemical stability, and a method of their production. The prasugrel salts are prepared from prasugrel of formula (I) in the base form by reaction with an inorganic or organic acid in a suitable solvent or in mixtures of solvents. The inorganic acid means hydrobromic acid, hydrogen bromide, hydroiodic and sulphuric acid and the organic acid means cyclamic, ethane sulfonic, benzene sulfonic and 2-naphthalene sulfonic acid.