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. 2020 Nov 23;10(12):545. doi: 10.1007/s13205-020-02551-4

Table 1.

Compounds identified by UPLC-ESI-TOFMS/MS in positive mode in the CE of A. cearensis seeds

Peak no. Retention time (min) [M-H] observed [M-H] calculated Product ions (MS/MS) Empirical formula Parts per million (error) Putative name References
1 1.18 689.2051 689.2082 689.2087, 367.1008, 352.8637 C33H37O16 4.5 Icariin glucuronide Shunjun et al. (2017)
2 1.29 527.1564 527.1553 202.1848, 184.9314, 178.0209 C27H27O11 2.1 QQCA (quinicquinic-caffeic acid ester) Plazonić et al. (2009)
3 2.94 467.1732 467.1706 329.0866, 261.0790, 179.0338, 137.0256 C21H23O12 2.2 (Epi)gallocatechin hexose II Ibrahim et al. 2014
4 3.11 305.0735 305.0720 179.0339, 167.0341, 137.0252, 125.0241 C15H13O7 4.9 Gallocatechin Ibrahim et al. (2014)
5 3.32 172.0376 172.0372 242.9876, 144.0423, 116.0501 C6H2N7 2.3 No identified
6 4.93 218.2143 218.2120 177.0513, 145. 0170, 225.9959 C12H28NO2 10.5 No identified
7 6.09 246.2422 246.2433 258.8799, 184.0619, 156.0619 C14H32NO2 4.5 No identified
8 7.25 247.2733 247.2746 275.2783, 256.2661, 230.2536 C16H36NO2 4.7 No identified
9 7.96 283.1002 283.1029 295.0207, 240.0207, 133.0802 C16H12O5 9.5 Dihydroxymethoxyisoflavone Oliveira et al. (2017)
10 8.26 119.0829 119.0821 437.2041, 185.1608, 120.0852 C4H11N2O2 6.7 No identified
11 8.46 303.0885 303.0874 137.0244 C16H15O6 3.6 4′- or 5′-O-Methyl-(epi)catechin I Ibrahim et al. (2014)
12 9.27 393.3636 393.3639 334.3075, 249.1913,133.0866 C13H41N14 0.8 No identified
13 9.69 332.3412 332.28 330.3311, 270.9351, 150.7104 1.0 Gallic-caffeic acid ester Plazonić et al. (2009)
14 9.84 457.2762 457.2743 155.0720, 458.2881 C31H37O3 4.2 No identified
15 9.89 457.2829 457.2801 155.0675, 458.2868 C24H41O8 6.1 No identified