| Bioactivity | PF-05180999 (PF-999) is a phosphodiesterase 2A (PDE2A) inhibitor, with an IC50 of 1.6 nM. | ||||||||||||
| Invitro | PF-05180999 is a phosphodiesterase 2A (PDE2A) inhibitor, with an IC50 of 1.6 nM. PF-05180999 binds to the rat, dog and monkey PDE2A, with Kis of 4.2, 8.4, and 5.5 nM and IC50s of 2.6, 5.2, and 3.4 nM, respectively. PF-05180999 shows weak activity against PDE, with IC50s of 2.03 μM (PDE10A1), 26.969 μM (PDE7B), 50.09 μM (PDE11A4), and >56.25 μM (PDE1B1, PDE3A1, PDE4D3, PDE5A1, PDE6 (bovine), PDE8B, PDE9A1), respectively. PF-05180999 is also a weak inducer of CYP3A4, and with no direct inhibition of human recombinant cytochrome P450 (CYP) enzymes (1A2, 2B6, 2C8, 2C9, 2C19, 2D6, and 3A) and no induction of CYP1A2[1]. | ||||||||||||
| In Vivo | PF-05180999 (Compound 30; 0.032-0.32 mg/kg mg/kg, s.c.) dramatically reduces the working memory errors produced by ketamine in a working memory radial arm maze (RAM) model in rats. PF-05180999 causes acute and exposure-dependent elevation in the accumulation of cGMP bulk levels in the cortex, striatum, and hippocampus, but with no changes in cAMP and the associated downstream phospho-cAMP response element-binding protein (p-CREB) in mice[1]. | ||||||||||||
| Name | PF-05180999 | ||||||||||||
| CAS | 1394033-54-5 | ||||||||||||
| Formula | C19H17F3N8 | ||||||||||||
| Molar Mass | 414.39 | ||||||||||||
| Appearance | Solid | ||||||||||||
| Transport | Room temperature in continental US; may vary elsewhere. | ||||||||||||
| Storage |
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| Reference | [1]. Helal CJ, et al. Identification of a Potent, Highly Selective, and Brain Penetrant Phosphodiesterase 2A Inhibitor Clinical Candidate. J Med Chem. 2018 Feb 8;61(3):1001-1018. |