1.0 2010-04-08 22:07:38 UTC 2025-11-18 23:04:53 UTC FDB007475 Terpenene Alpha-Terpinene is one of four isomers of terpinene (the other three being beta terpinene, gamma terpenine, and delta terpinine or terpimolene) that differ in the position of carbon-carbon double bonds. Alpha-Terpinene belongs to the class of organic compounds known as menthane monoterpenes. These are monoterpenes with a structure based on the o-, m-, or p-menthane backbone. p-Menthane consists of the cyclohexane ring with a methyl group and a (2-methyl)-propyl group at the 1 and 4 ring position, respectively. The o- and m- menthanes are much rarer, and presumably arise by alkyl migration of p-menthanes. alpha-Terpinene is a naturally occurring monoterpene found in allspice, cardamom, and marjoram. alpha-Terpinene is a constituent of many essential oils with oil from Litsea ceylanica being is a major source (20%) of it. alpha-Terpinene has been found in Citrus, Eucalyptus and Juniperus species. alpha-Terpinene is a flavouring agent and is produced industrially by acid-catalyzed rearrangement of α-pinene. It has perfume and flavoring properties but is mainly used to confer a pleasant odor to industrial fluids. C10H16 136.238 136.125200515 1-methyl-4-(propan-2-yl)cyclohexa-1,3-diene terpinene CC(C)C1=CC=C(C)CC1 InChI=1S/C10H16/c1-8(2)10-6-4-9(3)5-7-10/h4,6,8H,5,7H2,1-3H3 YHQGMYUVUMAZJR-UHFFFAOYSA-N belongs to the class of organic compounds known as menthane monoterpenoids. These are monoterpenoids with a structure based on the o-, m-, or p-menthane backbone. P-menthane consists of the cyclohexane ring with a methyl group and a (2-methyl)-propyl group at the 1 and 4 ring position, respectively. The o- and m- menthanes are much rarer, and presumably arise by alkyl migration of p-menthanes. Menthane monoterpenoids Organic compounds Lipids and lipid-like molecules Prenol lipids Monoterpenoids Aliphatic homomonocyclic compounds Branched unsaturated hydrocarbons Cyclic olefins Monocyclic monoterpenoids Unsaturated aliphatic hydrocarbons Aliphatic homomonocyclic compound Branched unsaturated hydrocarbon Cyclic olefin Hydrocarbon Monocyclic monoterpenoid Olefin P-menthane monoterpenoid Unsaturated aliphatic hydrocarbon Unsaturated hydrocarbon Cyclic monoterpenes Menthane monoterpenoids Menthane monoterpenoids a monoterpenoid monoterpene logp 4.51 ALOGPS logs -2.44 ALOGPS solubility 4.98e-01 g/l ALOGPS logp 3.16 ChemAxon iupac 1-methyl-4-(propan-2-yl)cyclohexa-1,3-diene ChemAxon average_mass 136.238 ChemAxon mono_mass 136.125200515 ChemAxon smiles CC(C)C1=CC=C(C)CC1 ChemAxon formula C10H16 ChemAxon inchi InChI=1S/C10H16/c1-8(2)10-6-4-9(3)5-7-10/h4,6,8H,5,7H2,1-3H3 ChemAxon inchikey YHQGMYUVUMAZJR-UHFFFAOYSA-N ChemAxon polar_surface_area 0 ChemAxon refractivity 47.55 ChemAxon polarizability 17.59 ChemAxon rotatable_bond_count 1 ChemAxon acceptor_count 0 ChemAxon donor_count 0 ChemAxon physiological_charge 0 ChemAxon formal_charge 0 ChemAxon Specdb::EiMs 1791 Specdb::NmrOneD 4013 Specdb::NmrOneD 4300 Specdb::CMs 3298 Specdb::CMs 28654 Specdb::CMs 28763 Specdb::CMs 101849 Specdb::CMs 101850 Specdb::CMs 103752 Specdb::CMs 167306 Specdb::MsMs 10760 Specdb::MsMs 10761 Specdb::MsMs 10762 Specdb::MsMs 17432 Specdb::MsMs 17433 Specdb::MsMs 17434 Specdb::MsMs 2814326 Specdb::MsMs 2814327 Specdb::MsMs 2814328 Specdb::MsMs 2890696 Specdb::MsMs 2890697 Specdb::MsMs 2890698 HMDB0036995 Common verbena Type 1 specific Verbena officinalis 79772