1,1'-Methylenebis(2-isonicotinylhydrazine) 1707-15-9 4-22-00-00562 (Beilstein Handbook Reference) 4-Pyridinecarboxylic acid, 2,2'-methylenedihydrazide (9CI) BRN 0294524 Bis(isonicotinylhydrazo)methane ISONICOTINIC ACID, 2,2'-METHYLENEDIHYDRAZIDE Isonicotinic acid 2,2'-methylenedihydrazide Metazid Metazida [INN-Spanish] Metazida [Spanish] Metazide Metazide [INN] Metazidum [INN-Latin] Metazidum [Latin] Methazid Methazide Methazidum N,N-Methylenebisisoniazid NSC 39302 Ro 2-4969