urocyanogen

ur·o·cy·an·o·gen

(yūr'ō-sī-an'ō-jen),
A blue pigment sometimes observed in the urine in cases of cholera.

urocyanogen

(ū″rō-sī-ăn′ō-jĕn) [″ + ″ + gennan, to produce]
A blue pigment in urine, esp. in cholera patients.