摘要:
A purification method of the compound represented by formula 1 is provided, which includes the following steps: (1) loading crude compound 1 on macroporous adsorbent resin, (2) washing the macroporous adsorbent resin with an aqueous solution, an organic solvent or a mixture solution of organic solvent and water, (3) eluting with an aqueous solution, an organic solvent or a mixture solution of organic solvent and water. The purified compound represented by formula 1 is obtained.
摘要:
The crystalline form A of Bimatoprost of formula I, its preparation method and use are provided. There are characteristic peaks where diffraction angles 2θ are 3.2+0.2°, 5.5+0.2°, 11.4+0.2°, 16.7+0.2°, 17.6+0.2°, 19.9+0.2°, 20.8±02° and 22.8+0.2° in the X-ray powder diffraction pattern of the crystalline form A.
摘要:
The crystalline form A of Bimatoprost of formula I, its preparation method and use are provided. There are characteristic peaks where diffraction angles 2θ are 3.2±0.2°, 5.5±0.2°, 11.4±0.2°, 16.7±0.2°, 17.6±0.2°, 19.9±0.2°, 20.8±02° and 22.8±0.2° in the X-ray powder diffraction pattern of the crystalline form A.
摘要:
Disclosed is a crystal of carboprost tromethamine as represented by Formula (I). The crystal has characteristic peaks in the X-ray diffraction pattern at the following 2θ angles: 6.6±0.2°, 9.9±0.2°, 18.5±0.2° and 20.1±0.2°. Furthermore, also disclosed are preparation method and the use of the crystal.
摘要:
The present invention disclosed a novel azacyclohexapeptide or pharmaceutically acceptable salts, preparation methods and uses thereof. The structure of the azacyclohexapeptide is represented by the following formula 4:
摘要:
The invention provides a novel microorganism producing pravastatin sodium, as well as the method for producing pravastatin sodium by using this microorganism. Micropolyspora roseoalba CGMCC 0624 of the invention is highly tolerant to mevastatin sodium, and has a high transformation rate of mevastatin sodium, and can produce pravastatin sodium with a high efficiency and low cost.
摘要:
The present invention discloses a crystal of a peptide substance and the preparation method as well as the use thereof. Said crystal B possesses peaks at the following 2θ angles in the X-ray diffraction pattern (XRPD): 3.2±0.2°, 5.4±0.2°, 6.2±0.2°, and 9.3±0.2°.
摘要:
The present invention discloses a crystal of a peptide substance and the preparation method as well as the use thereof. Said crystal B possesses peaks at the following 2θ angles in the X-ray diffraction pattern (XRPD): 3.2±0.2°, 5.4±0.2°, 6.2±0.2°, and 9.3±0.2°.
摘要:
The invention provides a novel microorganism producing pravastatin sodium, as well as the method for producing pravastatin sodium by using this microorganism. Micropolyspora roseoalba CGMCC 0624 of the invention is highly tolerant to mevastatin sodium, and has a high transformation rate of mevastatin sodium, and can produce pravastatin sodium with a high efficiency and low cost.
摘要:
Disclosed are a high purity of caspofungin or salts thereof, and a preparation method thereof, and use thereof. Disclosed are a caspofungin or salts thereof with low solvent residue and hyposaline, and a preparation process comprising: dissolving a crude product of caspofungin or slats thereof into a system of water and acetic acid, them mixing with a first organic solvent ethyl alcohol, subsequently mixing with a second organic solvent ethyl acetate, then being subject to filtration and drying together with water, to obtain caspofungin or salts thereof with high stability, low solvent residue and hyposaline.