quinaphthol

from The Century Dictionary.

• noun A trade-name of a product of the union of quinine and β-naphthol sulphonate, offered for medicinal use in typhoid fever, intestinal tuberculosis, dysentery, etc. Also chinaphthol.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun medicine A treatment for typhoid fever etc, prepared from quinine and naphthol sulfonate