Trifluoroacetic AcidFluoroacetatesSolventsAcetic AcidAcetic AnhydridesChromatography, High Pressure LiquidHydrochloric AcidChromatography, Reverse-PhaseSpectrometry, Mass, Electrospray IonizationSpectrophotometry, UltravioletMolecular StructureMass SpectrometryIndicators and ReagentsChromatography, LiquidCyanogen BromidePeptidesAmino AcidsChromophore-Assisted Light InactivationSpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationAmino Acid SequencePeptide Fragments