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SECTION I: MOLECULAR GENETIC ENGINEERING AND BIOCHEMICAL TECHNOLOGY 95Table 1. The identified compounds in chemical constituents of S. oreodoxa leaf essential oilNo Constituents aRt bRIE cRIL Percent1 %u03b1-Pinene 10.53 940 932 34.42 %u03b1-Fenchene 10.92 953 945 0.23 Camphene 10.99 955 946 1.04 %u03b2-Pinene 11.90 985 974 17.35 Myrcene 12.09 991 988 0.46 o-Cymene 13.35 1029 1022 1.3 7 Limonene 13.52 1034 1024 5.78 1,8-Cineole 13.64 1037 1026 0.29 %u03b3-Terpinene 14.51 1063 1054 1.110 Terpinolene 15.57 1094 1086 0.811 Linalool 15.83 1101 1095 4.512 endo-Fenchol 16.53 1121 1114 0.813 trans-Sabinol 17.49 1148 1137 0.214 cis-%u03b2-Terpineol 17.86 1159 1140 0.215 Borneol 18.42 1175 1165 0.816 Santalone 18.78 1185 1177 0.217 %u03b1-Terpineol 19.22 1198 1186 1.818 Myrtenol 19.46 1205 1194 2.419 Bornyl acetate 22.54 1294 1254 0.120 Sabinyl acetate 22.99 1307 1289 1.621 Myrtenyl acetate 23.90 1335 1324 20.722 Geranyl acetate 25.51 1384 1379 0.523 %u03b2-Selinene 29.33 1504 1491 1.324 %u03b1-Selinene 29.57 1513 1492 0.225 %u03b2-Bisabolene 29.70 1517 1505 0.526 E-%u03b3-Bisabolene 30.45 1542 1529 0.4Total 98.6Monoterpene hydrocarbons (Sr. no. 1-7, 9, 10) 62.2Oxygenated monoterpenes (Sr. no. 8, 11-22) 34.0Sesquiterpene hydrocarbons (Sr. no. 23-26) 2.4aRetention time, bRetention indices relative to n-alkanes (C7-C30) on HP-5 MS column,cRetention indices from the Adams book [11] and NIST Webbook [12]