CBS-0550 is a drug developed by Taisho Pharmaceutical, which acts as a potent and selective cannabinoid CB<sub>2</sub> receptor agonist, with 1400x selectivity for CB<sub>2</sub> over the related CB<sub>1</sub> receptor. Unlike most cannabinoid agonists, CBS-0550 has good solubility in water, and in animal studies it was found to produce analgesic and anti-hyperalgesic effects. A number of related compounds have been developed with similar properties.