The Collaborative International Dictionary of English v.0.48:

phocenin \pho*ce"nin\ (f[-o]*s[=e]"n[i^]n), n. [Cf. F.
   phoc['e]nine.] (Chem.)
   See Delphin.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Delphin \Del"phin\, n. [L. delphinus a dolphin.] (Chem.)
   A fatty substance contained in the oil of the dolphin and the
   porpoise; -- called also phocenin.
   [1913 Webster]