(4S)-4-乙基-4-羟基-1H-吡喃并[3,4-c]吡啶-3,8(4h,7h)-二酮

bis[(6-chloropyridin-2-yl)oxy]-phenyl-sulfanylidene-λ⁵-phosphane

6-(4-吗啉)-2(1h)-吡啶酮

3-溴-6-氯吡啶-2(1h)-酮

三氟甲氧基吡啶-3-羧酸