上游原料
3,6-DichloropyridazineEthyl hydrazinecarboxylate; Ethyl 1-hydrazinecarboxylateEthyl (2-hydroxypropyl)amine; 1-(Ethylamino)-2-propanol3-Chloro-6-[ethyl(2-hydroxypropyl)amino]pyridazine; 1-[(6-Chloro-3-pyridazinyl)(ethyl)amino]-2-propanolethyl 2-[6-[ethyl(2-hydroxypropyl)amino]-3-pyridazinyl]-1-hydrazinecarboxylate
