pNPG-1(4-Nitrophenyl β-D-glucuronide) is a glucuronide monosaccharide derivative that is a chromogenic substrate for β-glucosidase.

Spastazoline is a potent and selective inhibitor of spastin(Human spastin with IC50 of 99 nM ).?

Prototypical selective δ-opioid receptor agonist peptide. Inhibits electrically stimulated contraction of mouse vas deferens in vitro (EC50 = 5.2 nM), and is antinociceptive in vivo.