TABLE 3.
Profiling of sterol glucosides from Arabidopsis
| Compound number | Sterol glucoside molecular speciesa | Formula (M)b | (M+NH4) (m/z)c | Product ion FS(m/z) |
|---|---|---|---|---|
| 71 | Glc-Cholesterol | C33H56O6 | 566.4415 | 369.3505 |
| 72 (I.S.) | Glc-Cholestanol | C33H58O6 | 568.4572 | 371.3662 |
| 73 | Glc-Campesterol | C34H58O6 | 580.4572 | 383.3662 |
| 74 | Glc-Stigmasterol | C35H58O6 | 592.4572 | 395.3662 |
| 75 | Glc-Sitosterol | C35H60O6 | 594.4728 | 397.3818 |
| 76 (I.S.) | Glc-Stigmastanol | C35H62O6 | 596.4885 | 399.3975 |
I.S., internal standard.
a
Stigmasterol and isofucosterol were not distinguished by Q-TOF measurements.
b
Formula of the parental, non-charged molecule.
c
Molecular weight of the cation formed of the parental molecule with ammonium.