QuinoxalineQuinoxaline 98%PhenopiazineChinoxalinBenzoparadiazineBenzopyrazineBenzo[a]pyrazine1,4-BenzodiazineQuinazinePhenpiazine喹喔啉1,4-二氮萘Quinoxaline苯并吡嗪Chinoxalinbenzoparadiazine1,4-diazanaphthalene1,4-benzodiazinebenzo[a]pyrazine1,4-naphthyridinebenzopyrazinequinoxaline