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Ibudilast | Neuroinflammation inhibitor

Ibudilast (CAS 50847-11-5) is a phosphodiesterase inhibitor with some selectivity for PDE4 and 5. (IC50s= 53, 35, 48, 12 and 10 μM for PDE 1a, 2, 3, 4 and 5 respectively1). Acts as a cerebral vasodilator by selectively inducing a cGMP-independent relaxation of the intracranial vertebrobasilar artery.2 Attenuates neuroinflammation and enhances retinal ganglion cell viability in glaucoma via PKA signaling.3  A glial cell activation inhibitor.4 Enhances morphine analgesia and attenuates tolerance and withdrawal.5 Orally active and crosses the blood-brain barrier.5


1) Kishi et al. (2001), Ibudilast: a non-selective PDE inhibitor with multiple actions on blood cells and the vascular wall; Cardiovasc. Drug Rev., 19 215
2) Yamazaki et al. (2011), Ibudilast. A mixed PDE3/4 inhibitor, causes a selective and nitric oxide/cGMP-independent relaxation of the intracranial vertebrobasilar artery; Eur. J. Pharmacol., 650 605
3) Cueva Vargas et al. (2016), The glial cell modulator ibudilast attenuates neuroinflammation and enhances retinal ganglion cell viability in glaucoma through protein kinase A signaling.; Neurobiol. Dis., 93 156
4) Mizuno et al. (2004), Neuroprotective role of phosphodiesterase inhibitor ibudilast on neuronal cell death induced by activated microglia; Neuropharmacology, 46 404
5) Ledeboer et al. (2007), Ibudilast (AV-411). A class therapeutic candidate for neuropathic pain and opioid withdrawal syndromes; Expert. Opin. Investig. Drugs, 16 935

Focus Biomolecules cell signaling supplier, chemical structure of Ibudilast | Neuroinflammation inhibitor | CAS 50847-11-5

Catalog#  10-2236-0005

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Catalog Number:
Neuroinflammation inhibitor
Chemical Name:
Alternate Names:
2-Methyl-1-[2-(1-methylethyl)pyrazolo[1,5-a]pyridine-3-yl 1-propanone; KC-404; AV411
Molecular Weight:
Molecular Formula:
Soluble in DMSO (up to 25 mg/ml) or Ethanol (up to 20 mg/ml)
Physical Properties:
White solid
98% by HPLC
NMR (Conforms)
Storage Temperature:
RT (des.)
Stable for 1 year as supplied. Solutions in DMSO or ethanol may be stored at -20°C for up to 3 months.
Shipping Code:
Materials provided by Focus Biomolecules are for laboratory research use only and are not intended for human or veterinary applications.

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