1-((2,6-Dichlorobenzylidene)amino)-3-hydroxyguanidine 23256-40-8 24047-25-4 27818-21-9 Guanoxabenz Guanoxabenz [USAN:INN] Hydrazinecarboximidamide, 2-((2,6-dichlorophenyl)methylene)-N-hydroxy-