Table 2. Compounds emitted by D. cf. concentrica.

Retention time (min)	Suggested compound*	Molecular formula	Main fragments (m/z)	Area (%)	MW
2.2	3-methyl-1-butanol	C5H12O	42, 55, 57, 70	1.0	88
2.25	2-methyl-1-butanol	C5H12O	41, 56, 57, 70	1.1	88
2.7	1-methyl-1,3-cyclohexadiene	C7H10	77, 79, 91, 94	6.5	94
2.8	1-methyl-1,4-cyclohexadiene	C7H10	77, 79, 91, 94	3.9	94
4.1	4-heptanone	C7H14O	43, 71, 114	0.2	114
4.3	isoamyl acetate	C7H14O2		traces	130
5.2	4-heptyn-2-ol	C7H12O	45, 53, 67 68, 97, 112	4.2	112
5.5	2-octenal	C8H14O	42, 55, 57 84, 98, 126	33.3	126
6.3	octanal	C8H16O	69, 71, 72 83, 84, 95 110, 128	4.7	128
7.2	4,4-dimethyl-1,3-cyclopentanedione	C7H10O2	41, 56, 126	4.0	126
7.7	2,2,5-trimethylcyclopentanone	C8H14O	41, 56, 126	16.5	126
10.5	phenyl ethyl alcohol	C8H10O	65, 91, 92, 122	1.9	122
18.2	β-elemene	C15H24	41, 53, 55, 67, 68, 79, 81, 93, 107, 121, 133, 135, 147, 149, 161, 189, 204	0.06	204
18.4	β-elemene	C15H24	41, 53, 55, 67, 68, 79, 81, 93, 107, 121, 133, 135, 147, 149, 161, 189, 204	1.0	204
19.4	(+)-α-funebrene	C15H24	-	traces	-
19.6	α-guaiene	C15H24	41, 53, 55, 67, 79, 81, 93, 105, 121, 133, 147, 161, 189, 204	0.1	204
19.9	2-(4-hydroxyphenyl)ethanol	C8H10O2	?	0.08	204
20.7	terpenes	C10H10O3	108, 136, 137, 163, 178	9.0	178
21.0	β-selinene	C15H24	41, 53, 55, 67, 79, 81, 91, 93, 107, 121, 133, 147, 161, 175, 189, 204	0.7	204
21.2	α-selinene	C15H24	41, 53, 55, 67, 79, 81, 91, 93, 107, 121, 133, 147, 161, 175, 189, 204	0.2	204
21.4	α-bulnesene	C15H24	41, 53, 55, 67, 79, 81, 91, 93, 107, 121, 133, 147, 161, 189, 204	0.7	204
21.6	germacrene A	C15H24	-	traces	-
21.8	7-epi-α-selinene	C15H24	-	traces	-
22.0	dauca-4(11),8-diene	C15H24	-	traces	-
22.9	veratryl acetone	C11H14O3	-	traces	-
25.1	3-methoxy-2-naphthol	C11H10O2	77, 131, 159, 174	1.6	174
25.2	pogostol	C15 H26O	41, 53, 55, 71, 81, 93, 107, 121, 131, 147, 161, 189, 204	1.2	222

* identified according to NIST Mass Spectral Library, ver. 2.0 d