Table 1.
Chemical composition of the essential oil of Eupatorium serotinum Michx.
| RI a | RI b | Compound | % ± SD | RI a | RI b | Compound | % ± SD |
|---|---|---|---|---|---|---|---|
| 802 | 801 | Hexanal | 0.16 ± 0.02 | 1531 | 1533 | trans-Cadina-1,4-diene | 0.20 ± 0.07 |
| 810 | 796 | 2-Hexanol | 0.92 ± 0.01 | 1540 | --- | Unidentified e | 1.28 ± 0.05 |
| 850 | 846 | (2E)-Hexenal | 0.86 ± 0.11 | 1542 | 1539 | α-Copaen-11-ol | 7.89 ± 0.13 |
| 932 | 932 | α-Pinene | 0.17 ± 0.01 | 1548 | --- | Unidentified f | 1.76 ± 0.04 |
| 949 | 946 | Camphene | 1.78 ± 0.02 | 1550 | --- | Unidentified g | 0.75 ± 0.03 |
| 977 | 974 | β-Pinene | 0.18 ± 0.02 | 1558 | 1559 | Germacrene B | 0.44 ± 0.03 |
| 999 | 1001 | δ-2-Carene | 0.15 ± 0.01 | 1562 | --- | Eudesmenol h | 0.32 ± 0.09 |
| 1029 | 1024 | Limonene | 0.26 ± 0.01 | 1569 | 1567 | Palustrol | 5.32 ± 0.12 |
| 1283 | 1287 | Bornyl acetate | 4.72 ± 0.07 | 1575 | 1574 | Germacra-1(10),5-dien-4β-ol | 0.91 ± 1.10 |
| 1326 | --- | Unidentified c | 0.93 ± 0.03 | 1581 | 1577 | Spathulenol | 1.58 ± 0.83 |
| 1346 | 1345 | α-Cubebene | 0.59 ± 0.01 | 1588 | 1590 | Globulol | 0.58 ± 0.03 |
| 1375 | 1374 | α-Copaene | 0.11 ± 0.05 | 1593 | 1592 | Viridiflorol | 1.12 ± 0.09 |
| 1383 | 1387 | β-Bourbonene | 0.06 ± 0.01 | 1596 | --- | Unidentified i | 1.20 ± 0.02 |
| 1397 | 1387 | β-Cubebene | 3.65 ± 0.09 | 1603 | 1602 | Ledol | 2.80 ± 0.03 |
| 1406 | 1409 | α-Gurjunene | 0.74 ± 0.02 | 1620 | 1611 | Germacra-1(10),5-dien-4α-ol | 1.44 ± 0.13 |
| 1417 | 1419 | β-Ylangene | 0.09 ± 0.03 | 1622 | 1624 | Selina-6-en-4β-ol | 0.31 ± 0.03 |
| 1418 | 1417 | β-Caryophyllene | 0.96 ± 0.01 | 1627 | 1627 | 1-epi-Cubenol | 0.61 ± 0.10 |
| 1428 | 1434 | γ-Elemene | 0.28 ± 0.05 | 1638 | 1639 | cis-Guaia-3,9-dien-11-ol | 0.12 ± 0.01 |
| 1448 | 1448 | cis-Muurola-3,5-diene | 0.07 ± 0.03 | 1642 | 1638 | τ-Cadinol | 0.80 ± 0.03 |
| 1455 | 1452 | α-Humulene | 0.41 ± 0.04 | 1642 | 1640 | τ-Muurolol | 0.62 ± 0.08 |
| 1471 | 1475 | trans-Cadina-1(6),4-diene | 0.25 ± 0.03 | 1646 | 1644 | α-Muurolol (=δ-Cadinol) | 0.69 ± 0.07 |
| 1480 | 1484 | Germacrene D | 6.58 ± 0.09 | 1648 | 1646 | Agarospirol II | 1.10 ± 0.04 |
| 1486 | 1488 | δ-Selinene | 0.27 ± 0.02 | 1654 | 1652 | α-Cadinol | 2.31 ± 0.04 |
| 1488 | 1489 | β-Selinene | 0.17 ± 0.01 | 1668 | --- | Unidentifiedj | 5.72 ± 0.14 |
| 1491 | 1493 | trans-Muurola-4(14),5-diene | 0.69 ± 0.03 | 1751 | 1759 | Cyclocolorenone | 23.38 ± 0.43 |
| 1494 | 1493 | epi-Cubebol | 1.81 ± 0.03 | Green leaf volatiles | 1.94 | ||
| 1497 | 1500 | α-Muurolene | 0.34 ± 0.02 | Monoterpene hydrocarbons | 2.53 | ||
| 1502 | --- | Unidentified d | 1.30 ± 0.02 | Oxygenated monoterpenoids | 4.72 | ||
| 1512 | 1513 | γ-Cadinene | 0.21 ± 0.00 | Sesquiterpene hydrocarbons | 19.14 | ||
| 1514 | 1514 | Cubebol | 4.18 ± 0.11 | Oxygenated sesquiterpenoids | 57.90 | ||
| 1517 | 1522 | δ-Cadinene | 3.02 ± 0.25 | Total Identified | 86.23 |
a RI = Retention index determined in reference to a homologous series of n-alkanes on a ZB-5ms column. b RI values from the databases. c MS(EI) (mass spectrum (electron impact)): 162(84%), 147(96%), 133(20%), 120(32%), 119(41%), 108(35%), 105(100%), 91(63%), 79(29%), 77(22%), 55(11%), 53(12%), 41(14%). d MS(EI): 202(7%), 187(9%), 162(68%), 159(31%), 147(50%), 145(32%), 132(49%), 119(66%), 105(89%), 91(48%), 81(18%), 79(20%), 77(16%), 59(100%), 43(20%), 41(20%). e MS(EI): 202(4%), 187(13%), 162(56%), 159(59%), 147(39%), 145(40%), 132(73%), 131(39%), 119(73%), 106(48%), 105(88%), 91(47%), 81(16%), 79(25%), 77(19%), 59(100%), 55(18%), 43(19%), 41(20%). f MS(EI): 220(24%), 205(17%), 163(19%), 120(35%), 110(100%), 105(20%), 95(35%), 69(44%), 55(20%), 41(24%). g MS(EI): 220(47%), 163(25%), 161(32%), 121(100%), 108(42%), 93(42%), 81(59%), 69(17%), 55(15%), 41(18%). h Correct isomer not identified. i MS(EI): 220(49%), 205(7%), 163(33%), 161(28%), 121(100%), 108(40%), 93(35%), 81(80%), 69(20%), 55(17%), 41(19%). j MS(EI): 202(46%), 187(67%), 174(40%), 162(60%), 159(100%), 147(89%), 134(30%), 131(23%), 119(62%), 105(71%), 91(50%), 59(61%), 43(20%), 41(22%).