Terpenes are widely found in essential oils and oleoresins. Terpenes are hydrocarbons constructed of isoprene units (C₅H₈)n, and their derivatives which are oxygen-containing compounds and unsaturated compounds. Depending on the number of isoprene units, terpenes may be called monoterpenes (n=2), sesquiterpenes (n=3) and diterpenes (n=4). Monoterpenes, such as geraniol, menthol and pinene, often have the fragrance. Phytoncide contains pinene as a major component, which is recent topics in the forest bathing. Traditionally, terpenes have been utilized as perfumes and pharmaceuticals. Additionally, many of terpenes often possess asymmetric carbon atoms in their molecules. Such terpenes can be chemically modified, and used as chiral auxiliaries and chiral ligands to synthesize optically active compounds, and also to measure the optical purity.

Acyclic Monoterpenes

Monocyclic Monoterpenes

Bicyclic Monoterpenes

Others

Acyclic Monoterpenes

C0369	C1466	C2254
C1454	D1277	D3382
C0370	C1211	C1708
C0915	D1592	G0027
G0028	G0218	G0241
G0236	L0048	L0049
N0077	N0463	T1298

C0369	(+)-Citronellal
C1466	(-)-beta-Citronellol
C2254	(-)-beta-Citronellol
C1454	(-)-Citronellal
D1277	2,6-Dimethyl-2,4,6-octatriene
D3382	3,7-Dimethyl-1-octen-3-ol
C0370	beta-Citronellol
C1211	Citral Dimethyl Acetal
C1708	Citronellic Acid
C0915	Citronellyl Acetate
D1592	Dihydrolinalool
G0027	Geraniol
G0028	Geranyl Acetate
G0218	Geranyl Formate [for Perfumery]
G0241	Geranyl Nitrile (cis- and trans- mixture)
G0236	Geranylacetone (contains Nerylacetone)
L0048	Linalool
L0049	Linalyl Acetate
N0077	Nerol
N0463	Neryl Acetate
T1298	Tetrahydrolavandulol

Monocyclic Monoterpenes

I0333	L0047	L0105
M0826	M1221	N0626
M0407	L0046	M0321
T1993	L0132	M0545
M0573	M0571	A1107
M0834	M0990	M0051
P0866	M0319	M1044
I0726	M1066	C0703
C0704	I0076	M0317
T0022	T0984	I0077
M0318	I0078	M0320
M0513	T2344	T0817
M0410	M1129	S0444

I0333	(+)-Isomenthol
L0047	(+)-Limonene
L0105	(+)-Limonene
M0826	(+)-Menthol
M1221	(+)-Menthyl Chloroformate
N0626	(+)-Neomenthol
M0407	(+)-Pulegone
L0046	(+/-)-Limonene
M0321	(+/-)-Menthol
T1993	(+/-)-Terpinen-4-ol
L0132	(-)-Limonene
M0545	(-)-Menthol
M0573	(-)-Menthoxyacetic Acid
M0571	(-)-Menthoxyacetyl Chloride
A1107	(-)-Menthyl Acetate
M0834	(-)-Menthyl Chloride
M0990	(-)-Menthyl Chloroformate
M0051	(-)-p-Mentha-1,5-diene
P0866	(-)-Perillaldehyde
M0319	(-)-Terpinen-4-ol
M1044	(1R,2S,5R)-(-)-Menthyl (S)-p-Toluenesulfinate
I0726	(1R,2S,5R)-2-Isopropyl-5-methylcyclohexyl (R)-2-Hydroxypropionate
M1066	(1S,2R,5S)-(+)-Menthyl (R)-p-Toluenesulfinate
C0703	(R)-(-)-Carvone
C0704	(S)-(+)-Carvone
I0076	alpha-Ionone
M0317	alpha-Terpinene
T0022	alpha-Terpineol
T0984	alpha-Terpineol
I0077	beta-Ionone
M0318	gamma-Terpinene
I0078	Ionone (alpha-, beta- mixture)
M0320	Isopulegol
M0513	Menthone
P1783	Piperitone
T2344	Terpin Monohydrate
T0817	Terpinolene (so called) [for Perfumary]
M0410	Thymol
M1129	trans-p-Menthane-3,8-diol
S0444	trans-Sobrerol

Bicyclic Monoterpenes

C1324	C0015	C1391
C0998	D2715	B0567
B1125	C0047	C0010
C0012	F0163	C0016
C0017	C0009	C0011
C0014	I0275	C1325
C0972	C1393	C1308
P0441	B1012	C1021
C1022	F0164	P1099
C1482	T1863	C0013
H0862	C1660	M1070
P0440	H0863	C1326
C1327	K0028	C0542
C0934	H0830	P1362
C1661	B0525	B0526
I0306	I0617	T0989
V0072

C1324	(+)-10,2-Camphorsultam
C0015	(+)-10-Camphorsulfonic Acid
C1391	(+)-10-Camphorsulfonimine
C0998	(+)-10-Camphorsulfonyl Chloride
D2715	(+)-3,9-Dibromocamphor
B0567	(+)-3-Bromocamphor
B1125	(+)-3-Bromocamphor-8-sulfonic Acid Ammonium Salt
C0047	(+)-3-Carene
C0010	(+)-Camphor
C0012	(+)-Camphoric Acid
F0163	(+)-Fenchone
C0016	(+/-)-10-Camphorsulfonic Acid
C0017	(+/-)-10-Camphorsulfonic Acid Sodium Salt
C0009	(+/-)-Camphene (contains ca. 20% Tricyclene)
C0011	(+/-)-Camphor
C0014	(+/-)-Camphorquinone
I0275	(+/-)-Isoborneol
C1325	(-)-10,2-Camphorsultam
C0972	(-)-10-Camphorsulfonic Acid
C1393	(-)-10-Camphorsulfonimine
C1308	(-)-10-Camphorsulfonyl Chloride
P0441	(-)-beta-Pinene
B1012	(-)-Borneol
C1021	(-)-Camphanic Acid
C1022	(-)-Camphanic Chloride
C1251	(-)-Camphor
F0164	(-)-Fenchone
P1099	(1R)-(+)-alpha-Pinene
C1482	(1R)-(-)-Camphorquinone
T1863	(1R)-(-)-Thiocamphor
C0013	(1R)-Camphor Oxime
H0862	(1R,2R,5R)-(+)-2-Hydroxy-3-pinanone
C1660	(1S)-(+)-Camphorquinone
M1070	(1S)-(-)-10-Mercaptoisoborneol
P0440	(1S)-(-)-alpha-Pinene
H0863	(1S,2S,5S)-(-)-2-Hydroxy-3-pinanone
C1326	(2R,8aS)-(+)-(Camphorylsulfonyl)oxaziridine [Asymmetric Oxidizing Reagent]
C1327	(2S,8aR)-(-)-(Camphorylsulfonyl)oxaziridine [Asymmetric Oxidizing Reagent]
K0028	(S)-(+)-Ketopinic Acid
C0542	1,8-Cineole [for Determination of o-Cresol]
C0934	1,8-Cineole
H0830	3-Heptafluorobutyryl-(+)-camphor
P1362	alpha-Pinene Oxide
C1661	anti-(1R)-(+)-Camphorquinone 3-Oxime
B0525	Borneol (contains ca. 20% Isoborneol)
B0526	Bornyl Acetate (contains ca. 20% Isobornyl Acetate)
I0306	Isobornyl Acetate
I0617	Isobornyl Methacrylate (stabilized with MEHQ)
T0989	Thujone (alpha- and beta- mixture)
V0072	Verbenone

Others

D1588	B2119	A0001
A0792	C0957	C0796
D1180	A0002	T0608
F0347	G0149	G0228
I0145	L0143	N0454
O0317	P1674	P0411
P1675	R0064	A0651
S0525	H0096	H0097

D1588	(+)-Dehydroabietylamine [Optical Resolving Agent]
B2119	(+/-)-alpha-Bisabolol
A0001	Abietic Acid
A0792	Abscisic Acid (synthetic)
C0957	alpha-Caryophyllene
C0796	beta-Caryophyllene
B1413	Bisabolene (so called) [for Fragrance]
D1180	Dehydroabietylamine
A0002	Ethyl Abietate
F0287	Farnesene (mixture of isomers) [for Perfumery]
T0608	Farnesol (mixture of isomers)
F0347	Farnesyl Acetate (mixture of isomers)
G0221	Geranyl-linalool (mixture of isomers)
G0149	Glycyrrhetic Acid
G0228	Guaiazulene
I0145	Isophytol
L0143	Linalool Oxide
N0454	Nerolidol (cis- and trans- mixture)
O0317	Oleanolic Acid Hydrate
P1674	Phytantriol
P0411	Phytol
P1675	Phytyl Acetate (cis- and trans- mixture)
R0064	Retinoic Acid
A0651	Sodium Abietate
S0525	Solanesol
H0096	Squalane
H0097	Squalene