BCIP Red (5-Bromo-6-chloro-3-indoxyl phosphate, p-toluidine salt ) is a derivative of BCIP. While BCIP yields a blue precipitating product, BCIP Red produces a red (λmax 565 nm) colored precipitate.
White solid soluble in water
Store at -20°C and protect from light
Also available in the BCIP Red/NBT kit (catalog no. 10005).