Table 1.
Product Ions Derived from MS/MS of E2 Acquired with High Accuracy Tandem Mass Spectrometry
| Precursor Ion1 | m/z (intensity)2 |
|||||
|---|---|---|---|---|---|---|
| a | b | c | d | e | f | |
| E2 (m/z 271.1700) | 145.0657 (77) | 183.0813 (100) | 143.0501 (49) | 239.1437 (44) | 169.0654 (31) | 119.0500 (5) |
| [D4]-E23 (m/z 275.1947) | 147.0778 (83) | 187.1062 (100) | 145.0623 (48) | 243.1687 (48) | 171.0779 (31) | 121.0625 (6) |
| [13C6]-E24 (m/z 277.1898) | 145.0652 (81) | 186.0910 (100) | 143.0497 (40) | 244.1603 (45) | 171.0724 (33) | 119.0496 (5) |
| [D1]-E25 (m/z 272.1762) | 145.0653 (85) 146.0707 (26) |
183.0808 (100) 184.0865 (47) |
143.0498 (57) 144.0548 (16) |
239.1435 (55) 240.1474 (12) |
169.0653 (37) 170.0709 (12) |
119.0498 (8) |
1
CID performed on this ion. Full MS/MS mass spectra in Figures 1A, 1B, 1C, and Supplementary Figure 1.
2
Obtained on a Waters Synapt G2-S (< 5 ppm mass accuracy, Supplementary Table 1)
3
(2,4,16,16-[D4])-Estradiol
4
(13,14,15,16,17,18-[13C6])-Estradiol
5
(17-O[D1])-Estradiol