Thiols

Thiols are volatile sulfur-containing organic compounds found in cannabis and various plants, characterized by a reactive sulfhydryl (-SH) group. In cannabis, thiols contribute to pungent, savory, and sometimes garlic-like or onion-like aromatic notes, particularly in certain cultivars bred for distinctive flavor profiles. These compounds are structurally distinct from typical terpenes and represent a separate category of volatile aromatic molecules. Thiol presence is often associated with specific strain lineages and breeding work focused on sulfurous or umami-forward sensory profiles. Detection and quantification of thiols requires specialized analytical methods, as they exist in trace quantities and are highly volatile. Breeders studying thiol-rich phenotypes contribute to understanding how secondary metabolites create chemotype diversity.

Breeders targeting pungent, savory cultivar expressions often select for thiol-forward phenotypes through controlled crosses and phytochemical screening. Understanding thiol biosynthesis pathways helps breeders develop cultivars with distinctive aromatic complexity beyond traditional monoterpene and sesquiterpene profiles.