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The exact mass measurements of major apocarotenoids in the chicken retina. Galloxanthin lost a water molecule in the ionization process resulting in a difference of 18 units in the measurement of mass.
| Carotenoid | m/z observed | m/z theoretical | ppm error | Ion | m/z of intact molecule |
|---|---|---|---|---|---|
| Apo2 | 397.308 | 397.3101 | -5.29 | M+H | 397.308 |
| galloxanthin | 377.2836 | 377.2844 | -2.12 | M+H-H2O | 395.2836 |
