(organic chemistry) Any of several isomeric five-membered heterocycles having two carbon atoms, two nitrogen atoms, one sulfur atom and two double bonds

(organic chemistry) Any of several isomeric five-membered heterocycles having two carbon atoms, two nitrogen atoms, one sulfur atom and one double bond

(organic chemistry) A thioaldehyde

(organic chemistry) The tricyclic heterocycle consisting of two benzene rings fused to that of a dithiin ring

plural of thial

plural of thiadiazole

plural of thiadiazoline

(organic chemistry) A five-membered unsaturated heterocycle containing two carbon atoms, one sulfur atom, two nitrogen atoms and one double bond; any derivative of this compound

(organic chemistry) Describing any heterocycle having one or more sulfur atoms in the ring

(organic chemistry) Any heterohelicene containing at least one sulfur heteroatom