Representative ESI-MS spectra of Pierce Intact Protein Standard Mix

Pierce Intact Protein Standard Mix (0.38 µg/µL) was reconstituted in a 50%/50%(v/v) mixture of 0.1% formic acid in 50% acetonitrile and LC/MS-grade water. Sample was analyzed with a Q Exactive Plus mass spectrometer at 17.5K @ m/z 200 (A,B) and 140K @ m/z 200 (C,D) resolution in protein mode. Deconvoluted spectra at each resolution were obtained with BioPharma Finder 2.0 Software.