Abstract:
A recombinant expression vector capable of expressing and secreting an antibody fragment fused with E. coli thermostable enterotoxin signal sequence derivative or E. coli outer membrane protein A (Omp A) signal sequence in the form of a soluble heterozygote protein is used to mass-produce the antibody fragment by culturing a microorganism transformed with the expression vector in a medium and collecting the antibody fragment secreted from the transformed microorganism into the medium
Abstract:
A crystalline clopidogrel naphthalenesulfonate or a hydrate thereof, a method for preparing same, and a pharmaceutical composition containing same are provided.
Abstract:
Disclosed is a method for the mass production of a monomeric or dimeric immunoglobulin Fc region, free of initial methionine residues, using a recombinant expression vector comprising a nucleotide sequence coding for a recombinant immunoglobulin Fc region comprising an immunoglobulin Fc region linked at the N-terminus thereof to an immunoglobulin Fc region via a peptide bond.
Abstract:
The present invention relates to a clathrate of azithromycin hydrate with 1,2-propyleneglycol of formula (I), a method for the manufacture thereof, and a pharmaceutical composition containing same. The inventive compound is much less hygroscopic than azithromycin hydrate or crystals known in the art, therefore, it can be useful for the preparation of a medicine for treating various microbial infections. wherein m ranges from 1 to 2 and n, from 0.30 to 0.45.
Abstract:
A clathrate of azithromycin hydrate with 1,2-propyleneglycol is much less hygroscopic than azithromycin hydrate or crystals known in the art, therefore, it can be useful for the preparation of a medicine for treating various microbial infections.
Abstract:
Risperidone is prepared in a high yield by reacting 2,4-difluorophenyl(4-piperidinyl)methanone oxime hydrochloride and 3-(2-chloroethyl)-6,7,8,9-tetrahydro-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one in an aqueous alkali hydroxide solution having an alkali hydroxide concentration in the range of 20 to 40%.
Abstract:
Amlodipine camsylate of the present invention is a crystalline salt of amlodipine suitable for pharmaceutical formulation, which is prepared by using low toxic camphor sulfonic acid to meet required pharmaceutical properties for treating cardiovascular diseases.
Abstract:
A protein conjugate having a prolonged in vivo half-life of a physiological activity, comprising i) a physiologically active polypeptide, ii) a biocompatible non-peptidic polymer, and iii) an immunoglobulin, is useful for the development of a peptide drug due to the enhanced in vivo stability and prolonged half-life in blood, while reducing the possibility of inducing an immune response.
Abstract:
Clarithromycin can be easily prepared by reacting erythromycin A N-oxide with a methylating agent to obtain 6-O-methylerythromycin A N-oxide; and treating 6-O-methylerythromycin A N-oxide obtained above with a reducing agent in a high yield.
Abstract:
Form II crystals of clarithromycin can be easily prepared by treating clarithromycin of different crystal forms with water or with a mixture of water and a water-immiscible organic solvent and isolating treated crystals by filtration.