title: Determination of 6-demethyltetracycline HCl in 6-demethylchlortetracycline HCl.
mesh_terms: D003707:Demeclocycline; D009279:Naphthacenes; D013053:Spectrophotometry; D013057:Spectrum Analysis; D013752:Tetracycline
chemical_list: D009279:Naphthacenes; D003707:Demeclocycline; D013752:Tetracycline