title: Ion-pair extraction and precipitation methods for ethambutol determination.
mesh_terms: D000636:Aminosalicylic Acids; D011232:Chemical Precipitation; D002725:Chloroform; D003124:Colorimetry; D004396:Coloring Agents; D003523:Cycloserine; D004977:Ethambutol / Q000032:analysis*; D006863:Hydrogen-Ion Concentration; D007202:Indicators and Reagents; D007538:Isoniazid; D008722:Methods; D012997:Solvents; D013056:Spectrophotometry, Ultraviolet; D013607:Tablets / Q000032:analysis
chemical_list: D000636:Aminosalicylic Acids; D004396:Coloring Agents; D007202:Indicators and Reagents; D012997:Solvents; D013607:Tablets; D002725:Chloroform; D004977:Ethambutol; D003523:Cycloserine; D007538:Isoniazid