PNPG is a chromogenic β-D-glucosidase substrate, producing a yellow solution upon cleavage.

5-Hydroxyindole, a hydroxylated indole, can be found in a vast array of pharmacologically active agents and natural products. 5-Hydroxyindole slows desensitization of the 5-HT3 receptor-mediated ion current in N1E-115 neuroblastoma cells.

Polyphyllin H can be extracted from loblolly pine and rhizomes, has antitumor activity, and is used in studies of inflammation, fractures, and convulsions.