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. 2023 Nov 17;23:413. doi: 10.1186/s12906-023-04210-6

Table 1.

The relative percentage of silylated compounds in A. pyrethrum root methylene chloride fraction using GC-MS

RT (min) RI Compound Molecular formula Molecular weight Relative % SE Chemical Class
13.41 1377 Copaene C15H24 204 1.58 0.09 SC
13.75 1573 Spathulenol C15H24O 220 0.40 0.12 SA
15.01 1613 Caryophyllene oxide C15H24O 220 0.35 0.28 SO
15.21 1788  N-isobutyl-dodeca-2,4,8,10-tetraenamide C16H25NO 247 0.76 0.99 AA
15.40 1802 Hexadecane C16H34 226 0.49 0.89 A
15.91 1856 Heptadecane C17H36 240 1.03 0.73 A
16.38 1878  N-isobutyl-2,4-heptadiene-6-monoynamide C11H15NO 177 0.48 0.01 AA
16.76 1891 Lauric acid C12H24O2 200 4.55 0.12 FA
16.96 1900 Myristic acid C14H28O2 228 0.33 0.55 FA
17.09 1910 Pentadecanoic acid C15H30O2 242 0.51 0.39 FA
17.61 1921 Palmitic acid C16H32O2 256 1.56 1.01 FA
18.17 1936 Linoleic acid C18H32O2 280 0.38 0.04 FA
18.45 1941 Stearic acid C18H36O2 284 0.18 0.08 FA
19.02 Tetradeca-2E,4E-dien-8,10-diynoic acid isobutylamide (anacycline) C18H25NO 271 0.30 0.12 AA
19.87 1946 Deca-2E,4E-dienoic acid isobutylamide (pellitorine) C14H25NO 223 7.96 0.22 AA
20.20 1949 Deca-2E,4E,8Ztrienoic acid isobutylamide (8,9-(dehydropellitorine) C14H23NO 221 2.33 0.67 AA
20.34 1951 Undeca-2E,4E-diene-8,10-diynoic acid isobutylamide C15H19NO 229 0.49 0.78 AA
20.50 1959 Deca-2E,4E,8Ztrienoic acid piperidide C15H23NO 233 0.86 0.89 AA
21.04 1976 Tetradeca-2E-diny-8,10-diynoic acid isobutylamide C18H27NO 273 0.64 0.99 AA
21.84 1989 Tetradeca-2E,4E, nE-trienoic-8,10-diynoic acid Isobutylamide C18H23NO 269 0.24 1.03 AA
23.02 2007  N-isobutyl-2,4-undecadiene-8,10-diynamide C16H21NO 243 0.78 0.03 AA
23.11 2018 Dodeca-2E,4E, nE-trienoic acid 4-hydroxyphenylethylamide C20H27NO2 313 0.46 0.06 AA
23.43 2029 2,8-N-isobutyl-2,8-dodecadienamide C16H29NO 251 0.92 0.82 AA
23.59 2041 Tetradeca-2E,4E,8Etrienoic acid 4-hydroxyphenylethylamide C22H31NO2 341 1.68 0.74 AA
25.99 2052 2E,4E-deca-2,4-dienoic acid 2-phenylethyl amide C18H25NO 271 11.22 0.45 AA
26.12 2068 Deca-2E,4E-dienoic acid piperideide C15H23NO 233 3.13 0.23 AA
26.30 2078 Deca-2E,4E,6Z-trienoic acid piperideide/Deca-2E,4E,6E-trienoic acid piperideide C15H21NO 231 1.49 0.03 AA
26.40 2096 Deca-2E,4E,6Z,8Ztetraenoic acid piperideide/Deca-2E,4E,6E,8Ztetraenoic acid piperideide C15H19NO 229 1.34 0.78 AA
26.52 2116 Tetradeca-2E,4E,12Ztriene-8,10-diynoic acid isobutylamide C18H23NO 269 0.88 0.19 AA
26.67 2124 Phytol C20H40O 296 0.44 0.34 D
26.87 2158 Linoleic acid ethyl ester C20H36O 308 1.69 0.36 E
32.81 2200 Myristamide C14H29NO 227. 1.51 0.21 AA
34.68 2275 Palmitoleamide C16H31NO 253 1.13 0.58 AA
35.07 2377 Oleamide C18H35NO 281 17.53 0.27 AA
35.23 2399 Stearamide C18H37NO 283 3.46 0.13 AA
37.75 2410 Eicosane C20H42 282 1.47 0.45 A
37.97 2734 Tetracosanoic acid, methyl ester C25H50O 366 1.73 0.78 E
39.50 2837 Squalene C30H50 410 2.12 0.60 T
39.77 3172 Stigmasterol C29H40O 412 8.78 0.29 S
39.99 3353 γ- Sitosterol C29H50O 414 3.55 0.78 S
40.46 3370 Lupeol C30H50O 426 2.63 0.97 T
Terpenes (%) 7.52
Alkylamides (%) 59.59
Alkanes (%) 2.99
Fatty acids (%) 7.51
Esters (%) 3.42
Sterols (%) 12.33
Total identified components (%) 93.36

Values are means ± standard deviations (𝑛=3). A: alkane; AA: alkylamide; D: diterpene; E: ester; FA: fatty acid; S: sterol; SA: sesquiterpene alcohol; SC: sesquiterpene hydrocarbon; SO: sesquiterpene oxide; T: triterpene; RI; retention index on DB-5-MS column relative to n-alkanes C8-C30.; Rt: retention time; SE: standard error