2,3-二氢-1,4-苯并二氧-5-甲醛

2,2-dimethyl-3-(2-pyridylmethyl)-4-oxo-4H-1,3-benzoxazine

吡啶-2-甲醛2-喹啉腙

2-氨基-2-(2-吡啶基)乙酸