Thiols Volatile Compounds

Thiols are volatile sulfur-containing compounds that contribute distinctive aromas to cannabis, often described as garlic, onion, skunk, or savory notes. These organic molecules belong to the broader class of volatile organic compounds (VOCs) and are produced during cannabis plant development and terpene degradation. Thiol presence in cannabis genetics is commonly associated with certain landrace and modern cultivars, particularly those with Skunk or Cheese lineage. Breeders working in these categories have documented thiol accumulation as a heritable trait influenced by both genetics and cultivation conditions. Analytical testing can identify specific thiols like dimethyl disulfide and dimethyl trisulfide, which contribute to strain aroma profiles.

Cannabis breeders intentionally select for or against thiol-producing genetics depending on desired aroma profiles. Understanding thiol expression helps breeders develop cultivars with consistent, recognizable savory or funky aromatic signatures that differentiate phenotypes within strain families.