TLC and GLC determination of aromatic amine impurities in bulk p-aminobenzoic acid and in its potassium and sodium salts.
D010129:4-Aminobenzoic Acid / Q000032:analysis*; D000588:Amines / Q000032:analysis*; D062365:Aminobenzoates / Q000032:analysis*; D002849:Chromatography, Gas / Q000379:methods; D002855:Chromatography, Thin Layer / Q000379:methods; D004340:Drug Contamination / Q000032:analysis; D011188:Potassium; D012964:Sodium
D000588:Amines; D062365:Aminobenzoates; D012964:Sodium; D011188:Potassium; D010129:4-Aminobenzoic Acid