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Characteristic peak for FB1, FB2, FB3, and unknown compounds in MTC-9999E.
| Factor | FB1 | FB2 | FB3 | Compound I | Compound II | Compound III |
|---|---|---|---|---|---|---|
| Measured mass (m/z) | 722.3973 | 706.4020 | 706.4015 | 764.4059 | 748.4123 | 748.4118 |
| Calculated formula | C34H60NO15+ | C34H60NO14+ | C34H60NO14+ | C36H62NO16+ | C36H62NO15+ | C36H62NO15+ |
| Theoretical mass (m/z) | 722.3958 | 706.4008 | 706.4008 | 764.4063 | 748.4114 | 748.4114 |
| Mass error (ppm) | 1.59 | 1.21 | 0.66 | −0.48 | 1.20 | 0.54 |
