Monoterpene Vs Sesquiterpene

Monoterpenes and sesquiterpenes are two major classes of volatile organic compounds found in cannabis and other plants, distinguished primarily by molecular size and structure. Monoterpenes contain 10 carbon atoms (C₁₀H₁₆), while sesquiterpenes contain 15 carbon atoms (C₁₅H₂₄), affecting their volatility, boiling points, and persistence in the plant. Common monoterpenes in cannabis include limonene, myrcene, and pinene; sesquiterpenes include caryophyllene, humulene, and beta-bisabolol. Monoterpenes are generally more volatile and aromatic at lower temperatures, whereas sesquiterpenes tend to be heavier and more stable, often contributing deeper, earthier notes. Understanding these chemical families helps breeders and cultivators predict aroma profiles and how terpenes interact across phenotypes.

Breeders often select for monoterpene or sesquiterpene dominance to influence aroma intensity and shelf-stability; monoterpene-rich cultivars typically express more pronounced top-note aromas, while sesquiterpene-forward lines often develop more complex, layered profiles during curing and storage.