49 results about "Tropisetron Hydrochloride" patented technology

The invention relates to a tropisetron hydrochloride compound. The purity of the tropisetron hydrochloride is greatly improved by acid-base reaction, activated carbon adsorption and separation and purification prepared chromatographic columns, thus optimizing the quality of preparation products and the safety of clinical medication. The method has simple process, low cost and high yield, and is applicable to industrial production.

The invention relates to a synthetic method of tropisetron and a preparing method of hydrochloric acid tropisetron. The synthetic method of the tropisetron hydrochloride comprises enabling benzpyrole-3-formic acid and tropine to directly conduct esterification in atent solvent under effects of an aromatic organic sulfoacid compound catalytic agent. The tropisetron synthesized by using the method is then acidized, alkali adjusted, and refined to obtain the target product hydrochloric acid tropisetron. The synthetic method is simple in process, convenient to operate, small in pollution, high in product purity, ideal in yield, and applicable to large-scale industrialization production.

Belonging to the technical field of medicines, the invention particularly relates to a Tropisetron hydrochloride compound, its preparation method, and a pharmaceutical composition containing the same. The Tropisetron hydrochloride compound has a structural formula shown as formula (I), wherein, the Tropisetron hydrochloride compound adopts Cu-K alpha ray for characteristic X ray powder determination, the X ray powder atlas is as shown in figure 1. Compared with the prior art, the Tropisetron hydrochloride compound provided in the invention has a different crystal form, which has good stability and improved liquidity at the same time, thus improving the preparation quality.

The invention provides a tropisetron hydrochloride freeze-dry preparation for treating emesis, containing tropisetron hydrochloride, gelatin, dextran, oleophilic emulsifier, hydrophilic emulsifier and freeze-dry supporting agent. The invention also relates to a preparation method of the tropisetron hydrochloride freeze-dry preparation, containing the following steps: (1) the tropisetron hydrochloride is added into injection water and completely dissolved; (2) the gelatin and the oleophilic emulsifier are added in solution prepared in step (1) to prepare water-in-oil emulsion; (3) dextran solution and the hydrophilic emulsifier are added in the solution prepared in step (2) to prepare water-in-oil-in-water double emulsion; (4) the prepared double emulsion is dropped by bolus injection into strong base solidified liquor in a high-voltage electrostatic field by an orifice; after solidifying, a microcapsule is filtered and washed by water or PH regulator to lead PH to be 5-7; (5) the freeze-dry supporting agent is dissolved in the injection water and mixed with the microcapsule evenly; after subpackage and freeze drying, the tropisetron hydrochloride freeze-dry preparation is obtained.

The invention discloses a tropisetron hydrochloride medicament composition for injection. The medicament composition consists of tropisetron hydrochloride, sodium chloride and citric acid, and is characterized in that the weight ratio of tropisetron hydrochloride to citric acid is 1:(0.001-5). The preparation method of the medicament composition comprises the following steps: taking 95% of prescription amount of water for injection; introducing dioxide at the temperature of 30-40 DEG C until the pH value is at the rang of 3.0-4.0; adding prescription amount of sodium chloride and citric acid, stirring and dissolving; adding prescription amount of tropisetron hydrochloride, and stirring to dissolve completely; adding medicinal charcoal in the solution, and standing after stirring uniformly; filtering in vacuum, supplementing water for injection to full amount, and mixing uniformly; measuring the initial pH value, and regulating the pH value to the range of 3.0-4.0 with 4% sodium hydroxide solution and 10% citric acid solution according to the initial pH value; carrying out fine filtering; filling; sterilizing; carrying out lamp inspection; and warehousing, thus the finished product is obtained. The tropisetron hydrochloride medicament composition has good stability to light, has good stability, and has the obvious advantages for improving the product yield, lowering cost, implementing industrialization, and realizing clinical application better.

The invention provides a tropisetron hydrochloride liposome injection. The tropisetron hydrochloride liposome injection is mainly prepared from tropisetron hydrochloride, glycocholatesodium, cholesterol, gelatin, antioxygen and additive. The liposome injection improves the quality of preparation products, reduces toxic and side effects, improves bioavailability, and is high in preparation stability; and liposome is not broken due to dehydration, fusion, crystallization and the like during freeze-drying, and the liposome still keeps a good entrapment rate after the liposome is subjected to hydration and dissolution.

The present invention relates to medicine preparation, and a kind of orally disintegrated tropisetron hydrochloride tablet and its preparation process. The orally disintegrated tropisetron hydrochloride tablet is prepared with tropisetron hydrochloride as effective component, and lactose, mannitol, crosslinked polyvidon, magnesium stearate, microcrystalline cellulose, distilled water and steviosin as supplementary material, and through mixing in certain proportion and wet tabletting. It has hardness of 1.0-3.5 kg, and may be disintegrated in oral cavity within 1 min. It may be prepared in common tabletting machine.

The invention relates to a detecting method for indole-3-carboxylic acid, in particular to a detecting method for indole-3-carboxylic acid of impurities in tropisetron hydrochloride raw materials and preparations. The detecting method includes the steps: (1) taking the tropisetron hydrochloride raw materials or preparations, performing dissolving and diluting to realize constant volume by means of initial flowing phase, preparing liquor containing 0.5mg of tropisetron hydrochloride per milliliter, and using the liquor as sample liquor by tropisetron; (2) taking indole-3-carboxylic acid reference substances, performing dissolving and diluting to realize constant volume by means of initial flowing phase, preparing liquor containing 0.5mug of indole-3-carboxylic acid per milliliter, and using the liquor as reference substance liquor; and (3) respectively filling 50mul of sample liquor prepared in the step (1) and 50mul of reference substance liquor prepared in the step (2) into a high performance liquid chromatograph for gradient elution. The detecting method has the advantages of high specificity, accuracy in quantification, high sensitivity and stability, and the limit of detectingdrug quality is improved to a high standard.

The invention relates to a detection method of alpha-tropine, especially to a method for detecting alpha-tropine in a tropisetron hydrochloride injection. The method comprises the steps of: respectively preparing a sample solution and a reference solution, dripping the solutions respectively on one high efficiency silica gel GF254 thin-layer plate, and conducting development, then taking out and air drying the thin-layer plate, which is then dyed in a potassium iodobismuthate solution, and finally viewing the result. If the sample solution shows a speckle at the position of alpha-tropine in the reference solution, the sample solution can be determined to contain alpha-tropine, and the content of alpha-tropine is determined through color strength comparison of the speckle shown by the sample solution and the speckle shown by the reference solution. Characterized by high resolution, high sensitivity, simplicity and speediness, etc., the method of the invention can detect alpha-tropine with content less than 0.30 microgram in a tropisetron hydrochloride injection, thus providing guarantee for quality control during tropisetron hydrochloride injection preparation.

The invention discloses a medicinal tropisetron hydrochloride composition capsule for treating nausea and vomiting, which belongs to the technical field of medicines. The composition is prepared from tropisetron hydrochloride, mannitol, sodium sulfite, carboxymethyl starch sodium, povidone K30, 95 percent ethanol and talc powder, wherein the tropisetron hydrochloride is a new crystalline compound; an X-ray powder diffraction pattern, which is obtained by measurement of Cu-Kalpha rays, of the new crystalline compound, is as shown in figure 1, and the new crystalline compound is tropisetron hydrochloride different from the tropisetron hydrochloride reported in the prior art; tests prove that the new crystalline compound has the advantages of high purity, good flowability, good stability, low content of impurities, low possibility of moisture absorption, and safety and reliability in clinical application; the capsule prepared from the new crystalline compound is high in dissolution rate, good in stability and very suitable for clinical application.

The invention relates to a pharmaceutical composition containing containing tropisetron hydrochloride and dexamethasone sodium phosphate, and particularly relates to a combined application package containing a tropisetron hydrochloride injection and a dexamethasone sodium phosphate injection. When the combined application package is in use, the tropisetron hydrochloride injection and the dexamethasone sodium phosphate injection are co-dissolved in normal saline, a Ringer's solution, 5% glucose injection, a fructose solution and the like for intravenous infusion, so that a curative effect of stopping vomit can be increased.

The invention belongs to the technical field of medicine, and relates to a pharmaceutical tropisetron hydrochloride composition dry suspension for treating nausea and vomiting both caused by chemotherapy. The composition comprises tropisetron hydrochloride, instant sorbitol, glucose, xanthan gum and aishenglan. The tropisetron hydrochloride is a new crystal-form compound, an X-ray powder diffraction map obtained from Cu-K alpha ray measurement is shown as a map 1, and the tropisetron hydrochloride is different from tropisetron hydrochloride reported in the prior. Experiments show that the new crystal-form compound is high in purity, mobility and stability, low in impurity content, less prone to moisture absorption and safe and reliable in clinical application, and the dry suspension made from the crystal-form compound is high in stability and quite suitable for clinical application.

The invention discloses a vomit-stopping drug, namely, tropisetron hydrochloride composition tablets, and belongs to the technical field of medicines. The composition is prepared from the following materials: tropisetron hydrochloride, starch, magnesium aluminum silicate, polyvinylpolypyrrolidone, povidone K30, sodium dodecyl benzene sulfonate, purified water and magnesium stearate. Tropisetron hydrochloride is a new crystal compound and different from that reported in the prior art. The X-ray powder diffraction pattern obtained through measurement using Cu-K-alpha rays is shown in the figure 1. Experiments show that the new crystal compound is high in purity, good in fluidity and stability, low in impurity content, not liable to absorb moisture, and safe and reliable in clinical application; the tablets prepared using the new crystal compound is high in dissolution rate, good in stability and quite suitable for clinical applications.

The invention discloses a medicinal tropisetron hydrochloride composition dry suspension for treating nausea and emesis and belongs to the technical field of medicine. The composition is prepared from tropisetron hydrochloride, lactose, mannitol, PVPP, HPMC, Arabic gum, sucralose and aerosol. The tropisetron hydrochloride is a novel crystal-form compound. As shown in Figure 1 of X-ray powder diffraction diagram obtained by means of Cu-K alpha ray measurement, the tropisetron hydrochloride is different from tropisetron hydrochloride reported in the prior art. Tests find that the novel crystal-form compound is high in purity, good in fluidity and stability, low in impurity content, not prone to absorb moisture and safe and reliable in clinical application. The dry suspension prepared through the novel crystal-form compound is good in stability and quite suitable for clinical application.

The invention relates to a medicine tropisetron hydrochloride composition for treating nausea and emesis and belongs to the technical field of medicines. The composition is prepared from tropisetron hydrochloride and anhydrous sodium carbonate, wherein the tropisetron hydrochloride is of a crystal and an X-ray powder diffraction pattern obtained by Cu-K alpha ray measurement is shown as a figure 1. A new crystal form of the tropisetron hydrochloride provided by the invention is different from a crystal form structure in the prior art; experimental verification is carried out to surprisedly find out that the compound with the new crystal form has high purity, good mobility, good stability and low impurity content, does not easily absorb moisture, and is safe and reliable in clinical application; a powder injection prepared from the compound with the new crystal form has good stability; the medicine tropisetron hydrochloride composition has good stability after being matched with a solvent, and the content of insoluble micro-particles is extremely low, so that the composition is very suitable for the clinical application.

The invention relates to a pharmaceutical composition containing tropisetron hydrochloride and dexamethasone acetate, and particularly relates to a combined application package comprising a tropisetron hydrochloride injection and a dexamethasone acetate injection. When the combined application package is in use, the tropisetron hydrochloride injection and a dexamethasone acetate injection are co-dissolved in normal saline, a Ringer's solution, 5% glucose injection, a fructose solution and the like for intravenous infusion, so that a curative effect of stopping vomit can be increased.