ATR

Alpha-Terpinene

Terpene Glossary

Chemical Properties

Flash Point: 116°F/46.6°C
Color: Colorless
Odor: Smoky and woody
Cas#: 99 - 86 - 5
Molecular Formula: C10H16

Therapeutic Benefits

Antibacterial: Slows bacterial growth
Antifungal: Inhibits the growth of fungus
Anti-insomnia: Aids with sleep
Anti–proliferative: Inhibits cancer cell growth
Antioxidant: Prevents oxidation damage to other molecules in the body

About Alpha-Terpinene

Alpha terpinene (α-terpinene) is one of three monoterpenes known as terpinene, along with beta-terpinene and gamma-terpinene. α-terpinene occurs naturally in many varieties of plants, including allspice, eucalyptus, citrus, juniper, cardamom,  marjoram, and cannabis. 

Known for its smoky, woody scent, α-terpinene is a colorless liquid that is most commonly utilized by adding more pleasant scents into industrial fluids. It is also used in the beauty and pharmaceutical industries as a flavor and aroma additive. In biology, it is known as both a component of volatile oil and as a plant metabolite.

terpene glossary alpha terpinene molecule lab effects
Alpha-terpinene molecule

As a constituent of tea tree oil, α-terpinene possesses strong antioxidant properties.1 α-terpinene has also been researched as a potential cancer treatment. A study conducted by the Tropical Journal of Pharmaceutical Research found α-terpinene contributed to the inhibition of breast cancer cell growth.2

Like many terpenes, α-terpinene is referenced by a number of (potentially confusing) different names and synonyms. LabEffects’ list of known synonyms is as follows:

α-Terpinene synonyms and other names:

  • Terpinene
  • p-Mentha-1,3-diene
  • Alpha Terpinene
  • 1-Methyl-4-(1-methylethyl)-1,3-cyclohexadiene
  • 1-isopropyl-4-methyl-1,3-cyclohexadiene

Cannabis strains with high concentrations of α-terpinene include Sentinel and Warwick #1.

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