Table 1.
Selected metabolites detected by GC–MS or UPLC–MS with potential roles as endogenous metabolites that changed (p < .05) in uterine milieu during the early stages of porcine blastocyst elongation
| Annotated compound | p Value | Score | Retention time, s | Method |
|---|---|---|---|---|
| 2‐Methylbutyryl‐l‐carnitine | .001075242 | 2 | 86.1205 | UPLC–MS |
| 5‐Hydroxy‐l‐tryptophan | 5.34E−08 | 2 | 77.96667 | UPLC–MS |
| β‐Alanine (3TMS) | .005168837 | 2 | 413.4124 | GC–MS |
| Agmatine | .042832436 | 2 | 19.4304 | UPLC–MS |
| Butyryl‐l‐carnitine | .001610562 | 2 | 41.8635 | UPLC–MS |
| Cholesterol | .002401609 | 2 | 720.258 | UPLC–MS |
| Creatinine (3TMS) | .001821255 | 2 | 479.137 | GC–MS |
| Ethanolamine (3TMS) | .006441812 | 2 | 311.6718 | GC–MS |
| Glycine (2TMS) | .003585729 | 2 | 249.8665 | GC–MS |
| Hexadecasphinganine | .00147265 | 2 | 339.8155 | UPLC–MS |
| N‐Acetylglutamic acid | .000378459 | 2 | 45.5115 | UPLC–MS |
| Phenylalanine | .049042744 | 2 | 45.7008 | UPLC–MS |
| Phosphoric acid (3TMS) | .004983105 | 2 | 333.6724 | GC–MS |
| Serine (2TMS) | 4.62188E−05 | 2 | 323.8715 | GC–MS |
| Tryptophan | 3.78E−07 | 2 | 79.3871 | UPLC–MS |
| Tyrosine | 3.39597E−05 | 2 | 31.51725 | UPLC–MS |
| Urea (2TMS) | .004506316 | 2 | 311.053 | GC–MS |
| Uric acid (4TMS) | .004432358 | 2 | 707.9329 | GC–MS |
| Xanthine (3TMS) | .029778532 | 2 | 675.5724 | GC–MS |
Abbreviations: GC, gas chromatography; MS, mass spectrometry; TMS, trimethylsilyl; UPLC, ultra performance liquid chromatography.