Quinazoline
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Quinazoline is a compound made up of two fused six-membered simple aromatic rings, a benzene ring and a pyrimidine ring. Its chemical formula is C8H6N2. Quinazoline is yellow and crystalline. Any derivative of quinazoline may be described as a quinazoline compound.
One example of a compound containing the quinazoline structure is doxazosin mesylate.