Uroheumatin or Urohaematin: How To spell?

The word Uroheumatin is misspelled against Urohaematin, a noun meaning "Urinary haematin; -- applied to the normal coloring matter of the urine, on the supposition that it is formed either directly or indirectly (through bilirubin) from the haematin of the blood. See Urochrome, and Urobilin."