The Collaborative International Dictionary of English v.0.48:

Oxyquinoline \Ox`y*quin"o*line\, n. [Oxy
   (b) + quinoline.] (Chem.) Hydroxy quinoline; a phenol
       derivative of quinoline, -- called also carbostyril.
       [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Carbostyril \Car`bo*sty"ril\, n. [Carbon + styrene.]
   A white crystalline substance, C9H6N.OH, of acid properties
   derived from one of the amido cinnamic acids.
   [1913 Webster]