Synonyms: | 4-Pyridinecarboxylicacid, 2-(sulfomethyl)hydrazide calcium salt (2:1) (9CI); Isonicotinic acid,2-(sulfomethyl)hydrazide calcium salt (2:1) (8CI); Calcium N-methylenesulfonateisonicotinic hydrazide; Isoniazid methanesulfonate calcium; Neotizide calciumsalt |