32 results about "Vancomycin Hydrochloride" patented technology

The vancomycin hydrochloride injection consists of medicine vancomycin hydrochloride in 90%-99% and supplementary material in 1%-10%, and is prepared into powder for injection with supplementary material of stabilizer and / or antioxidant. The medicine powder has potency higher than 900 IU / mg, and is dissolved in water to form 50 mg / ml solution with absorbance at 465 nm lower than 0.065 and pH 2.0-4.0. It is prepared through freeze drying process. The vancomycin hydrochloride injection of the present invention has simple preparation process, common medicinal supplementary material citric acid, glycine, L-cysteine etc, and high normal temperature storage stability.

Provided is a method of purifying a vancomycin from a fermentation broth of a microorganism containing vancomycin, including passing the fermentation broth of a microorganism containing vancomycin through a strong acid cation exchange resin, a weak base anion exchange resin, alumina and a hydrophobic absorbent resin sequentially.

Ophthalmic ointments for treating infective eye diseases which are particularly effective against infective eye diseases caused by methicillin-resistant Staphylococcus aureus (MRSA) or methicillin-resistant Staphylococcus epidermidis (MRSE) and contain as the active ingredient from 0.01 to 5.0% of vancomycin hydrochloride. Compared with intravenous administration, topical administration of these ophthalmic ointments is accompanied with no problem of the occurrence of side effects such as renal toxicity and thus enables the maintenance of a therapeutically effective concentration.

The invention relates to stable vancomycin hydrochloride powder for oral liquid formulations. Also provided herein are methods of using vancomycin oral liquid formulations for the treatment of certain diseases such as Clostridium difficile pseudomembranous colitis and Staphylococcal enterocolitis as well as kits and related products thereof.

The present invention relates to a metal implant having antibacterial and osteosynthesis-promoting functions and a preparation method thereof, and the method comprises (1) preparing a metal implant, (2) subjecting the metal implant to surface treatment by using a micro-arc oxidation method, and covering the surface of the metal implant with a micro-arc oxidation coating containing calcium and phosphorus elements; (3) immersing the metal implant treated in the step (2) into a dopamine hydrochloride solution with the concentration of 2 to 5 mg / mL, and shaking at constant temperature of 30 to 45DEG C for 20 to 24 hours; (4) using deionized water or distilled water as a solvent, adding heparin sodium to prepare a heparin sodium solution with the concentration of 1 to 5 mg / mL, using the heparin sodium solution as a solvent, and adding vancomycin hydrochloride for preparing a vancomycin hydrochloride solution with a concentration of 50-200 mug / mL; immersing the metal implant treated in thestep (3) in the vancomycin hydrochloride solution, and shaking at constant temperature of 30 to 45 DEG C for 3 to 12 hours to obtain the metal implant.

The invention provides a method for improving the purity of vancomycin hydrochloride through ion exchange resin. The method comprises the following steps: (a), filtering and then adsorbing a vancomycin fermentation liquor through macroporous strong acid cation exchange resin; (b), washing saturated resin through deionized water after the resin is saturated; (c), circularly washing the saturated resin through alkaline aqueous solution after step (b) is accomplished; (d), eluting the saturated resin through an eluent, so as to form vancomycin eluant; (e), performing concentration and desalination on the eluant through a nanofiltration membrane, and obtaining a vancomycin crude product after water washing. The method ensures that quality indexes, such as the purity, transparency and color degree, of a vancomycin intermediate are greatly improved through the specific macroporous strong acid cation exchange resin, a special washing technology and a membrane system, is simple in production technology, high in yield, easy to control, and suitable for large-scale industrial production.

The invention discloses a method for preparing high-purity samples of related impurities (4, 6 and 9) of vancomycin hydrochloride. The method comprises the steps: preparing an aqueous solution with the concentration of 10g / L to 15g / L from crystalline powder of vancomycin hydrochloride; carrying out water-bath heating to the temperature of 30 DEG C to 33 DEG C, adding ethylene glycol, and carrying out stirring and heat preservationfor 120 to 122 hours; then, cooling the solution to 20 DEG C to 21 DEG C, and dropwise adding anhydrous ethanol into the cooled solution slowly for crystallization; and carrying out crystal separation by using high performance liquid chromatography preparative columns, thereby obtaining the high-purity samples of the impurities (4, 6 and 9) in vancomycin hydrochloride. According to the method, the process is simple, and the preparation cost is reduced greatly.

The invention discloses a preparation method of high purity samples of vancomycin hydrochloride impurities 11, 13, and 15. The preparation method comprises the following steps: preparing a vancomycin hydrochloride water solution with a concentration of 60 to 70 g / L from vancomycin hydrochloride crystallized powder, adjusting the pH to 4-6, maintaining a constant temperature of 40 to 42 DEG C for 8 to 9 hours in water bath, adjusting the pH to 6-7, carrying out macroporous resin chromatographic enrichment, collecting the coarse product liquids (with impurities from 40 to 60%) of impurities 11, 13, and 15, subjecting the coarse product liquids to ultrafiltration and nano filtration in sequence, and desalinating the nano filtrate by a high performance liquid chromatography (HPLC) column to obtain the high purity samples of vancomycin hydrochloride impurities 11, 13, and 15. The technology is simple, and the preparation cost is largely reduced.

The invention discloses a refining method for vancomycin hydrochloride. In the method, a vancomycin hydrochloride solution of which the purity is over 90 percent is refined into vancomycin hydrochloride of which the purity is over 95 percent; and in a refining process, solid-liquid separation is realized without using any organic solvent, and the yield is over 80 percent. Vancomycin in a mother solution obtained through solid-liquid separation can be returned to a previous separating process for recycling. The refining method is easy and convenient for operating, has high yield, and is a feasible industrial refining process.

The invention relates to an industrial feasible method for preparing a high-purity vancomycin hydrochloride. The method comprises the following steps of (1) putting a crude vancomycin with the content of vancomycin not less than 80% in a dextran resin glass chromatography column containing the NH4HCO3 mobile phase for column chromatography to obtain an effective chromatography liquid; (2) adding NaCl water solution into the effective chromatography liquid and stirring to produce a deposit; (4) top cleaning by 90% ethanol water solution for a few times and drying to obtain the vancomycin hydrochloride. Effective components of the vancomycin hydrochloride obtained through the method are improved greatly, other impurities are reduced greatly, and the purity is very high; meanwhile, the overall color of the product is improved remarkably, and the product is suitable for oral or injection administration.

The invention provides a high-density amorphous vancomycin hydrochloride, a preparation method thereof, an application of the vancomycin hydrochloride for oral administration or injection administration and a pharmaceutical composition containing the vancomycin hydrochloride. The vancomycin hydrochloride in an amorphous state has the characteristics similar to the diffraction pattern of an X-ray powdery crystal shown in the attached drawing 1. The effective components of vancomycin hydrochloride prepared by the preparation method are enhanced greatly, other impurities are reduced to a large extent, the purity is high, and the chromatographic purity can reach more than 95 percent. The amorphous vancomycin hydrochloride not only can be used as injections, but also can be used as capsules and other solid preparations. Meantime, the appearance and the color of products are improved obviously, and the products are suitable for oral administration or injection administration.

Provided is a separation and purification method for vancomycin hydrochloride of high purity. The method comprises the following steps: (1) obtaining a vancomycin hydrochloride solution from a crude vancomycin product by ion exchange chromatography and obtaining a concentrate by nanofiltration desalination and concentration; (2) adjusting the concentrate with a hydrochloric acid solution and then performing a column chromatography using a reverse chromatography column for the adjusted concentrate; (3) collecting the chromatographic solution of vancomycin to obtain a mixed chromatographic solution; (4) adjusting the mixed chromatographic solution, and separating the solution and the salts by nanofiltration desalination and concentration to obtain a concentrate; and (5) obtaining a vancomycin dry powder with a chromatographic purity of up to 99% and a pure white appearance by dehydrating and drying the concentrate of step (4), or by solvent crystallization or salting-out crystallization.

A method is provided for preparing spray dried powder containing vancomycin hydrochloride. The method comprises providing a vancomycin hydrochloride solution with a chromatographic purity of at least 95%, adding an excipient to the vancomycin hydrochloride solution to form a mixture solution of the vancomycin hydrochloride solution and the excipient, concentrating the mixed solution of the vancomycin hydrochloride solution and the excipient to form a 20% to 30% vancomycin concentrate, filtering the vancomycin concentrate to form a final filtrate, and spray drying the final filtrate to form a spray dried vancomycin hydrochloride powder with EP impurity B level of not more than 1.5%.

Disclosed herein are methods, compositions, and kits for treating a skin condition caused by a bacterial infection at a skin depth with a topical ointment comprising vancomycin hydrochloride. Also disclosed herein are methods, compositions, and kits for testing susceptibility of vancomycin for treating a bacterial infection at a skin depth, and of optimizing a topical ointment therapeutic regimen.