Benzothiadiazine
Benzothiadiazine is a chemical compound that consists of a benzene ring fused to a thiadiazine ring. Thiadiazine in turn is a six-membered heterocycle composed of three carbon atoms, one sulfur atom, and two nitrogen atoms.
Some benzothiadiazine derivatives are used as pharmaceutical drugs, including:
Image:Hydrochlorothiazide.png|thumb|left|150px|Hydrochlorothiazide, a benzothiadiazine derivative used as a diuretic