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. 2021 Feb 9;12(1):e02705-20. doi: 10.1128/mBio.02705-20

TABLE 2.

HR-ESI-MS analysis of ApmA-catalyzed acetylated aminoglycosides in positive ion mode

Modified aminoglycoside Molecular formula Exact mass [M+H]
Calculated Observed
Apramycin C21H42N5O11 540.2875 540.2891
N-acetyl-apramycin C23H45N5O12 582.2986 582.2989