different between quinazoline vs doxazosin

English

quinazoline (plural quinazolines)

(organic chemistry) A bicyclic aromatic heterocycle consisting of a benzene ring fused to one of pyrimidine; some of its derivatives are pharmaceuticals

Probably from (benzo)d(i)ox(ane) +? -azosin.

doxazosin (uncountable)

(pharmacology) A drug taken orally in the form of its mesylate C₂₃H₂₅N₅O₅·CH₄O₃S to relieve urethral obstruction in benign prostatic hyperplasia and to treat hypertension. It is a derivative of quinazoline that acts to relax smooth muscle by combining with and blocking the activity of an alpha-receptor.

“doxazosin”, in Merriam–Webster Online Dictionary, (Please provide a date or year).

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