2,2-Dimethylhydrazide of 2,6-dibutoxyisonicotinic acid hydrochloride 4-Pyridinecarboxylic acid, 2,6-dibutoxy-, 2,2-dimethylhydrazide, hydrochloride 57803-57-3 ISONICOTINIC ACID, 2,6-DIBUTOXY-, 2,2-DIMETHYLHYDRAZIDE, HYDROCHLORIDE