DiI is a lipophilic membrane dye. It diffuses laterally to stain the entire cell. DiI is excited to emit orange-red fluorescence which is weak in water but strong and photostable when incorporated into membranes.

Resveratrol 4'-(6-galloylglucoside) is a natural poduct found in the roots of rhubarb (Rheum palmatum L.).

1,7-dimethyl-1H-indole-3-carbaldehyde is a marine derived natural products found in Lyngbya majuscula.