2-(3,5-dibromo-4-methoxyphenyl)acetic acid is a marine derived natural products found in Ianthella quadrangulata.

(R)-Nepicastat HCl, the R-enantiomer of Nepicastat HCl, is a potent and selective inhibitor with IC50 of 25.1 nM and 18.3 nM for bovine and human dopamine-β-hydroxylase, with negligible affinity for twelve other enzymes and thirteen neurotransmitter receptors.

TAT TFA (YGRKKRRQRRR) is derived from human immunodeficiency virus (hiv-1) transcription reverse activator TAT, is a cell penetrating peptide.