PF-04447943

SKU: orb1706823

Description

PF-04447943 (Edelinontrine) is a potent and selective PDE9A inhibitor (IC50=12 nM) demonstrating anti-inflammatory effects through modulation of oxidative stress and T-cell responses. It has shown potential in preclinical research for conditions like sickle cell disease, with studies conducted both in vitro and in vivo.

Research Area

Metabolism Research

Key Properties

• CAS Number: 1082744-20-4
• MW: 395.46
• Purity: 99.59% (May vary between batches)
• Formula: C₂₀H₂₅N₇O₂
• SMILES: C[C@@H]1CN(Cc2ncccn2)C[C@H]1c1nc2n(ncc2c(=O)[nH]1)C1CCOCC1
• Target: PDE
• Solubility: 10% DMSO+40% PEG300+5% Tween-80+45% Saline:2.5 mg/mL (6.32 mM);DMSO:55 mg/mL (139.08 mM)

Bioactivity

• Target IC50:
  PDE9A:12 nM
• In Vivo:
  PF-04447943 concentrations dose-dependently increase in blood, brain, and cerebrospinal fluid (CSF), thirty minutes following oral administration in rats (1-30 mg/kg). In mice, PF-04447943 (3, 10, 30 mg/kg p.o.) dose-dependently enhances plasma and brain concentrations of PF-04447943 while the brain-to-plasma ratio ranged from 0.26 to 0.7 although this is not entirely dosed-dependent. Based on i.v. and p.o. dosing, pharmacokinetic studies with PF-04447943 in the rat indicate a Tmax of 0.3 h, T1/2 of 4.9 h, Cl of 21.7 mL/min/kg, and oral bioavailability of 47%. The brain: plasma exposure ratios 30 min after dosing range from 0.13 at the 1 mg/kg dose to 0.33 at the 30 mg/kg dose. CSF levels are approximately 50% of brain levels. CSF cGMP levels increase in a dose-dependent manner from a basal level of 3 pmol/mL to 13.3 pmol/mL (3.5-fold) at the 30 mg/kg dose. CSF cGMP levels also increased in a dose-dependent manner from a basal level of 3 pmol/mL in vehicle-treated animals to 13.3 pmol/mL (3.5-fold) at the 30 mg/kg dose. CSF cGMP levels are elevated at all doses tested with a maximal effect of 3.5 fold increase above controls at 30 mg/kg.
• In Vitro:
  PF-04447943 inhibits ANP (0.3 μM) stimulated cGMP (IC50: 375±36.9 nM (n=16)), in HEK whole cells expressing rhesus PDE9A2. PF-04447943 is found to be highly selective over other PDE enzymes (PDE1, Ki=8600±2121 nM, n = 5; PDE2A3, Ki>99,000 nM; PDE3A, Ki>50,000 nM; PDE4A, Ki>29,000 nM; PDE5A, Ki=14,980±5025 nM, n=5; PDE6C, Ki=5324±2612 nM, n=4; PDE7A2, Ki>75,000 nM; PDE8A, Ki>50,000 nM; PDE10, Ki>51,250±20,056 nM, n=4; PDE11, Ki>80,000 nM) and no other significant activity at ~60 other receptors/enzymes. Using recombinant human, rhesus, and rat PDE9A2 in a cell-free assay PF-04447943 is shown to have a Ki of 2.8±0.26, 4.5±0.13, and 18.1±1.9 nM (n=4, 11 and 9 respectively).

Storage & Handling

• Storage: Pure form: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice/Shipping at ambient temperature.
• Expiration Date: 12 months from date of receipt.
• Disclaimer: For research use only

Alternative Names

PDE9A, PF 04447943, PF04447943, PF-04447943, Edelinontrine

Compound Identifiers

PubChem CID

135564558