Table 2 Summary of the accurate mass measurements of hydrolysis and oxidation products of neomycin, as determined for their abundant adduct ions using UHPLC-Q-TOF MS
Compound | Elemental | Ion species | Accurate | Exact | Mass error | tR(min) | |
|---|---|---|---|---|---|---|---|
composition | mass (m/z) | mass (m/z) | mDa | ppm | |||
Neomycin | C23H46N6O13 | [M+H]+ | 615.3206 | 615.3201 | − 0.5 | − 0.8 | 4.1 |
A (D-ribose) | C5H10O5 | [M+H-H2O]+ | 133.0498 | 133.0501 | 0.3 | 2.2 | 4.1 |
B | C5H8O5 | [M+NH4-H2O]+ | 148.0608 | 148.0610 | 0.2 | 1.4 | 3.3 |
C | C5H6O5 | [M+H-H2O]+ | 129.0185 | 129.0188 | 0.3 | 2.3 | 3.3 |
D | C5H8O6 | [M+H-H2O]+ | 147.0291 | 147.0293 | 0.2 | 1.4 | 3.3 |