title: MALDI-TOF tandem mass spectrometric analysis of novel aza-analogues of semi-synthetic ansamycin antibiotic--rifampicin.
authors.forename: Krystian
authors.initials: K
authors.lastname: Pyta
authors.forename: Piotr
authors.initials: P
authors.lastname: Przybylski
mesh_terms: D007477:Ions / Q000737:chemistry; D017828:Rifabutin / Q000031:analogs & derivatives* / Q000737:chemistry; D012293:Rifampin / Q000031:analogs & derivatives* / Q000737:chemistry; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization / Q000379:methods*; D053719:Tandem Mass Spectrometry / Q000379:methods*
chemical_list: D007477:Ions; D017828:Rifabutin; D012293:Rifampin