摘要:
The present disclosure provides an echinocandin drug impurity and preparation and purification methods and use thereof. The echinocandin drug impurity has a structure shown in Formula I:
In the present disclosure, micafungin sodium is reacted with a protonic acid aqueous solution to obtain an echinocandin drug impurity, and a high-purity echinocandin drug impurity is obtained after chromatographic purification. The present disclosure overcomes problems that an echinocandin drug impurity is prone to being degraded during the purification, and purification difficulty is high, and an HPLC purity of the obtained echinocandin drug impurity may reach 90% or more. The echinocandin drug impurity may be used as a reference substance for establishing an analysis method for use in echinocandin drug quality control.
摘要:
Disclosed is a crystalline powder of a cyclic peptide compound, represented by formula I is the structure of same, and, also disclosed are a preparation method for same and uses thereof.
摘要:
Provided are a crystal form A of a compound having the structure as represented by formula I, and preparation method and use thereof. The X-ray powder diffraction (XRPD) chart of the crystal form A has characteristic peaks at the following diffraction angles: 2.9±0.2°, 13.6±0.2°, 17.3±0.2° and 18.6±0.2°.
摘要:
Disclosed is a crystalline powder of a cyclic peptide compound, represented by formula I is the structure of same, and, also disclosed are a preparation method for same and uses thereof.
摘要:
Disclosed is a composition of a cyclic peptide compound having a water content of 3%-20%, represented by formula I is the structural formula of the cyclic peptide compound, and, also disclosed are a preparation method for same and uses thereof.
摘要:
Disclosed is a low impurity content caspofungin pharmaceutical composition and a method for preparing the low impurity content caspofungin pharmaceutical composition. The caspofungin pharmaceutical composition comprises the compound of formula I and/or a pharmaceutically acceptable salt thereof, in combination with a saccharide protective agent(s) and an amino acid(s). The caspofungin pharmaceutical composition is prepared by dissolving the saccharide protective agent and the amino acid into water or a suitable buffer solution; adding the caspofungin compound and dissolving it; filtering the solution and lyophilizing.
摘要:
Provided are a crystal form A of a compound having the structure as represented by formula I, and preparation method and use thereof. The X-ray powder diffraction (XRPD) chart of the crystal form A has characteristic peaks at the following diffraction angles: 2.9±0.2°, 13.6±0.2°, 17.3±0.2° and 18.6±0.2°.
摘要:
Disclosed is a novel polymorph of a cyclic peptide compound, the structure whereof is represented by formula I; also disclosed are a preparation method for same and uses thereof.
摘要:
Disclosed is a novel polymorph of a cyclic peptide compound, the structure whereof is represented by formula I; also disclosed are a preparation method for same and uses thereof.
摘要:
Provided in the invention is a solvate of a cyclic peptide compound, represented by formula I is the structural formula of the cyclic peptide compound, and, also disclosed are a preparation method for same and uses thereof.