 URB597, nke a makwaara dị ka KDS-4103, bụ onye nwere ike ịmepụta ma ọ bụ nke na-ahọpụta nke fatty-acid amide hydrolase FAAH, enzyme nke na-eme ka hydrolysis intracellular nke anocamide endocannabinoid, nke nwere ihe gbasara 50 IC50 nke 4. 