The chemical Dioxopromethazine has a known molecular formula of C17-H20-N2-O2-S.Cl-H. Synonyms may include: 5,5-Dioxo-10-(2-(dimethylamino)propyl)phenothiazine hydrochloride, 9,9-Dioxo-10-(2-dimethylaminopropyl)-phenothiazinhydrochlorid [German], 9,9-Dioxopromethazine, Dioxopromethazine hydrochloride, 9,9-Dioxypromethazin, Promethazine 5,5-dioxide, Promethazine SS oxide, Prothanon, 9,9-Dioxo-10-(2-dimethylaminopropyl)-phenothiazinhydrochlorid, Dioxoprothazin (ChemID).