Table 2. GC-MS analysis of vinegar from Durian wood at 400°C

No	RT (min)	Wood vinegar compound	Area (%)
1	3.94	2-Cyclopenten-1-one, 2-methyl-	4.24
2	4.04	Ethanone, 1-(2-furanyl)-	5.28
3	5.13	2-Cyclohexen-1-one, 4-ethyl-4-methyl-	3.55
4	5.77	Phosphonic acid	0.46
5	6.08	1,6-Heptadien-4-ol	1.43
6	6.67	2-Cyclopenten-1-one, 2-hydroxy-3-methyl-	1.84
7	6.91	2-Cyclopenten-1-one, 2,3-dimethyl-	1.77
8	7.62	Phenol, 2-methyl-	0.07
9	8.32	Phenol, 2-methoxy-	24.74
10	9.13	2-Cyclopenten-1-one, 3-ethyl-2-hydroxy-	0.98
11	11.19	Creosol	8.10
12	12.52	2-Isopropoxyphenol	1.12
13	15.57	Phenol, 4-ethyl-2-methoxy-	13.54
14	15.85	Formic acid	0.16
15	21.91	2,4-Hexadienedioic acid	1.26

GC-MS: gas chromatography–mass spectrometry, RT: retention time.