Dextromethorphan (hydrobromide hydrate) 50 mg. Dextromethorphan (hydrobromide hydrate), CAS: 6700-34-1, MF: C18H25NO. HBr [H2O], Purity: greater than or equal to 98%, Appearance: Crystalline solid, Synonym: (9A, G13A, G14A)-G3-Gmethoxy-G17-Gmethyl-Gmorphinan, G hydrobromide monohydrate, Size: 50 mg