4985 (-)-alpha-Pinene (-)-alpha-Pinene is found in almond. alpha-Pinene is an organic compound of the terpene class, one of two isomers of pinene. It is found in the oils of many species of many coniferous trees, notably the pine. It is also found in the essential oil of rosemary (Rosmarinus officinalis). Both enantiomers are known in nature; 1S,5S- or (-)-alpha-pinene is more common in European pines, whereas the 1R,5R- or (+)-alpha-isomer is more common in North America. The racemic mixture is present in some oils such as eucalyptus oil. (Wikipedia) (-)-alpha-Pinene belongs to the family of Bicyclic Monoterpenes. These are monoterpenes containing exactly 2 rings, which are fused to each other. 7785-26-4 440968 C10H16 -62 °C No indication of carcinogenicity to humans (not listed by IARC). 2014-09-11T05:22:57Z 2026-04-06T02:11:44Z http://en.wikipedia.org/wiki/Alpha-Pinene C06308 28660 true [H][C@@]12C[C@@]([H])(C(C)=CC1)C2(C)C C10H16 InChI=1S/C10H16/c1-7-4-5-8-6-9(7)10(8,2)3/h4,8-9H,5-6H2,1-3H3/t8-,9-/m0/s1 GRWFGVWFFZKLTI-IUCAKERBSA-N 136.234 136.125200512 Exogenous Liquid 4.48 HMDB35658 389795 CHEM003886 DTXSID2029290 (1S,5S)-2,6,6-trimethylbicyclo[3.1.1]hept-2-ene