Table 4.
List of selected cinnamic acid derivatives tentatively found in BBMR, BBMS, and BBMU40.
| No. | RT (min) | Experimental m/z | Calculated m/z | Error (ppm) | Molecular Formula | MS/MS Product Ions |
Tentative Identification | Ref. |
|---|---|---|---|---|---|---|---|---|
| 1 | 1.036 | 193.0624 | 194.0697 | −2.27 | C10H10O4 | 146.0504, 134.8932, 106.0429 | Ferulic acid | [30] |
| 2 | 1.801 | 147.0585 | 148.0658 | −2.24 | C9H8O2 | 134.0152, 106.0415 | Cinnamic acid | [31] |
| 3 | 2.605 | 137.0179 | 138.0251 | 0.18 | C7H6O3 | 93.0263 | 2-hydroxybenzoic acid | [30] |
| 4 | 3.295 | 163.0325 | 164.0397 | −2.77 | C9H8O3 | 146.0453, 134.8934, 106.029 | p-Coumaric acid | [30] |
| 5 | 5.090 | 177.0480 | 178.0552 | −1.72 | C10H10O3 | 146.0464, 134.0172, 106.0429 | 4-methoxycinnamic acid | [32] |