II. Isolation of a Dextrorotatory Urobilin from Human Fistula Bile. ∗

Abstract

Summary and Conclusions

1. A dextrorotatory urobilin has been identified in 11 of 12 infected fistula bile samples examined. 2. The initial urobilinogen content of infected bile samples is considerably increased and the bile becomes lighter in association with overgrowth of bacteria productive of a fecal odor. The crystalline urobilin isolated from four of such samples was dextrorather than laevorotatory (as in the case of stercobilin isolated from the feces). 3. A specific color reaction and other characteristics of d-urobilin are described.