Tetrahydrozoline vs. Imidazoline

Tetrahydrozolinenoun

A derivative of imidazoline used in eye drops and nasal sprays.

Imidazolinenoun

(organic compound) A five-membered heterocycle containing three carbon atoms, two non-adjacent nitrogen atoms and one double bond

Imidazoline

Imidazoline is a class of heterocycles formally derived from imidazoles by the reduction of one of the two double bonds. Three isomers are known, 2-imidazolines, 3-imidazolines, and 4-imidazolines.