Rt (min) Compounds (%) RIa RIb Mol. Formula   Monoter penes 3.261 α-Pinene 1.27 939 939 C10H16 3.880 β-Pinene 0.42 981 980 C10H16 10.625 p-Cymene 2.56 1026 1026 C10H14 11.381 1,8-Cineol 3.08 1029 1033 C10H18O 16.153 Thymol 3.27 1288 1290 C10H14 O 16.947 Carvacrol 7.01 1298 1298 C10H14 O 18.042 Eugenol 1.13 1357 1356 C10H12O2   Sesquiterpenes 19.511 Thymol acetate 0.92 1357 1355 C12H16O2 23.760 α-Copaene 4.17 1378 1376 C15H24 25.934 β-Cubebene 11.26 1400 1390 C15H24 28.486 β-Elemene 2.04 1390 1391 C15H24 28.627 Methyl eugenol 0.49 1400 1401 C11H14O2 29.002 α-Humulene 1.21 1454 1454 C15H24 30.165 Germacrene D 9.81 1477 1480 C15H24 31.931 Butylated hydroxytoluene 2.00 1509 1512 C15H24O 32.471 Eugenol acetate 1.55 1537 1536 C12H16O3 33.502 Spathulenol 27.09 1577 1576 C15H24O 35.099 Globulol 5.36 1583 1583 C15H26O 35.710 Humulene epoxide 1.08 1598 1606 C15H24O 36.420 γ-Eudesmol 3.59 1630 1630 C15H26O 40.015 Cubenol 0.78 1643 1642 C15H26O 43.127 α-Eudesmol 2.34 1651 1652 C15H26O   Other 5.618 n-Hexanol 4.43 867 867 C6H14O 34.701 Hexadecanol 0.32 1871 1879 C16H34O 47.095 Phytol 1.00 1957 1949 C20H40O 54.32 α-tocoferol 0.24 2960 - C29H50O2 Total identified (%) 98.38       Relative proportions of the essential oil constituents were expressed as percentages. Rt=Retention time according their order on MS. aRetention indices experimental (based on homologous series of n-alkane C7-C30). bRetention indices from literature (Adams, 1995)

Table 1: Chemical compounds present in Scutia buxifolia essential oil.