Prophobilinogen in urine produces pink colour with which of the following reagent?
Fouchet's reagent
Benedict's reagent
Sodium nitropruside
Ehrlich's aldehyde reagent
Prophobilinogen, urobilinogen and stercobilinogen reacts with Ehrlich's aldehyde reagent to form red colour. Ref: Vasudevan Biochemistry, 4th Edition, Pages 256, 493