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

2,2-dimethyl-3-(6-methylpyrid-2-yl)-4-oxo-4H-1,3-benzoxazine

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

2-羟基甲基-4-吡啶甲腈

6-羟甲基-2-氰基吡啶