The Collaborative International Dictionary of English v.0.48:

Lepidine \Lep"i*dine\ (l[e^]p"[i^]*d[i^]n or *d[=e]n), n.
   (Chem.)
   An organic base, C9H6.N.CH3, metameric with quinaldine, and
   obtained by the distillation of cinchonine.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Quinaldine \Quin*al"dine\, n. [Quinoline + aldehyde + aniline.]
   (Chem.)
   A colorless liquid of a slightly pungent odor, C9H6N.CH3,
   first obtained as a condensation product of aldehyde and
   aniline, and regarded as a derivative of quinoline; -- called
   also methyl quinoline. [Written also chinaldine.]
   [1913 Webster]