Answer: thiol

AnswerCrossword Clue
THIOLAlcohollike compound
THIOLCompound added to natural gas to give it an odor
thiolcontaining the mercapto group; sulfhydryl; thiol
thiolany of various compounds having the general formula RSH which are analogous to alcohols but in which sulfur replaces the oxygen of the hydroxyl group and which have disagreeable odors
thiola sulphur compound
thiolany of a class of sulfur-containing compounds having the type formula RSH, in which R represents a radical, and having an extremely offensive, garlicky odor