2,2-dimethyl-3-(5-methylpyridin-2-yl)-2,3-dihydro-4H-benzo[e][1,3]oxazin-4-one

5-甲基-2-亚硝基吡啶

2-氨基-3-溴-5-甲基吡啶

亚磷酸二乙酯

N,N-dimethyl-N'-(5-methylpyridin-2-yl)methanimidamide