title: Colorimetric determination of microgram quantities of isonicotinic acid hydrazide (isoniazid).
mesh_terms: D003124:Colorimetry; D007538:Isoniazid / Q000032:analysis*; D008722:Methods; D008832:Microchemistry; D014639:Vanadium
chemical_list: D014639:Vanadium; D007538:Isoniazid