ethyl 6-[(2-methylpropan-2-yl)oxycarbonylamino]pyridine-2-carboxylate

6-(N,N-bis(tert-butyloxycarbonyl)amino)picolinic acid ethyl ester

2-氨基-6-吡啶甲醇

2-氨基-6-(2-羧基乙基)吡啶

2-氨基吡啶-6-甲醛