Betaine is also known as trimethylamine, and is the quaternary ammonium derivatives of glycine and a class of N-methyl-compound or trimethyl inner salt after the hydrogen of the amino group being substituted by the methyl group.

Angustifoline has activity against gram-positive bacteria. It inhibits human colon cancer cell growth by inducing autophagy along with mitochondrial-mediated apoptosis, suppression of cell invasion and migration and stimulating G2/M cell cycle arrest.

4,6-Dibromoindole is a marine derived natural products found in Glossobalanus sp.