tellurides
tellurones
terpenes
terpenoids
tetracyclines
tetrapyrroles
tetraterpenoids
thiazynes
thio
thioacetals
thioaldehydes
thioaldehyde S-oxides
thioanhydrides
thiocarboxylic acids
thiocyanates
thioethers
thiohemiacetals
thioketones
thioketone S-oxides
thiols
thiolates
thionylamines
thiyl radicals
triazanes
triazenes
trimethylenemethanes
trioxides
triterpenoids
tropilidenes
tropolones
tropones
tropyl radicals
tropylium ions