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The characterization of impurities present in vertilmicin by liquid chromatography (LC) coupled with mass spectrometry (MS) is described. A reversed phase (RP)-LC method using a C 18 column resistant to basic pH with an alkaline (pH 11) aqueous mobile phase was developed and coupled to MS with an electrospray ionization (ESI) source in the positive ion mode which provides MS n capability...
The characterization of impurities present in micronomicin sulfate injection by liquid chromatography (LC) coupled with mass spectrometry (MS) is described. A reversed phase (RP)-LC method using a C 18 column resistant to an alkaline (pH 11) aqueous mobile phase was developed and coupled to MS with an electrospray ionization (ESI) source in the positive ion mode which provides MS n ...
The characterization of unknown (UNK) impurities in capreomycin (CMN) using liquid chromatography coupled to mass spectrometry (LC/MS) has been described. The ion-pair liquid chromatography method coupled to ultraviolet detection (LC–UV) described by Mallampati et al. was used for the separation of CMN from its related substances. As the method uses non-volatile reagents it could not be directly coupled...
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