title: Improved method for salicylazosulfapyridine analysis and partial characterization of impurities in commercial salicylazosulfapyridine.
mesh_terms: D002855:Chromatography, Thin Layer; D003124:Colorimetry; D004340:Drug Contamination; D008722:Methods; D011208:Powders; D012997:Solvents; D013056:Spectrophotometry, Ultraviolet; D012460:Sulfasalazine / Q000032:analysis* / Q000302:isolation & purification; D013607:Tablets
chemical_list: D011208:Powders; D012997:Solvents; D013607:Tablets; D012460:Sulfasalazine