Table 1.
The UPLC-QTOF-MS/MS information of the annotated CQA, pCoQA, and FQA from Momordica plants extracts. The diagnostic ions (Q1 and Q2) used for isomers differentiation are also shown and they were ubiquitous across all the molecules detected.
| Rt (min) | [M-H]−
Molecular formula |
m/z
Measured |
m/z
Calculated |
Identity |
|---|---|---|---|---|
| 6.25 | C16H17O9 | 353.0873 | 353.0890 | cis-4-CQA |
| 6.40 | 353.0883 | 353.0873 | trans-4-CQA | |
| 7.23 | C16H17O8 | 337.0864 | 337.0923 | cis-4-pCoQA |
| 7.56 | 337.0923 | 337.0956 | trans-4-pCoQA | |
| 7.77 | C17H19O9 | 367.0947 | 367.1029 | cis-4-FQA |
| 7.98 | 367.0933 | 367.1021 | trans-4-FQA | |
|
| ||||
| Diagnostic ions | ||||
| — | C7H11O6 (Q1) | 191.0473 | 191.0556 | [Quinic acid-H]− |
| — | C7H9O5 (Q2) | 173.0370 | 173.0450 | [Quinic acid-H-H2O]− |