| Bioactivity | URB-597 (KDS-4103) is an orally bioavailable and selective FAAH inhibitor. URB-597 inhibits FAAH activity with an IC50s of approximately 5 nM in rat brain membranes, 0.5 nM in intact rat neurons, 3 nM in human liver microsomes. Antidepressant-like effects. Analgesic activity[1]. | ||||||||||||
| Invitro | URB-597 (KDS-4103) prevents the FAAH-catalyzed hydrolysis of [3H]anandamide by primary cultures of rat cortical neurons with an IC50 value of ~0.50 nM[1]. | ||||||||||||
| In Vivo | URB-597 (KDS-4103) inhibits rat brain FAAH activity after intraperitoneal (i.p.) administration with a median inhibitory dose (ID50) of 0.15 mg/kg in wild-type mice (+/+) or FAAH-null mice (-/-)[1].KDS-4103 (0.1-0.3 mg/kg, i.p.) elicits significant, anxiolytic-like, antidepressant-like and analgesic effects, which are prevented by treatment with CB1 receptor antagonists in rats and mice[1]. KDS-4103 is orally available in rats and cynomolgus monkeys[1].URB-597 inhibits FAAH in the brain rapidly (1 h), sustains at >90% through 12 h and >60% through 24 h after an oral dose of 10 mg/kg. Animal Model: | ||||||||||||
| Name | URB-597 | ||||||||||||
| CAS | 546141-08-6 | ||||||||||||
| Formula | C20H22N2O3 | ||||||||||||
| Molar Mass | 338.40 | ||||||||||||
| Appearance | Solid | ||||||||||||
| Transport | Room temperature in continental US; may vary elsewhere. | ||||||||||||
| Storage |
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| Reference | [1]. Daniele Piomelli, et al. Pharmacological profile of the selective FAAH inhibitor KDS-4103 (URB597). CNS Drug Rev. Spring 2006;12(1):21-38. |