Chemical structure of Entacapone.
Entacapone is supplied as a lyophilized powder. For a 30 mM stock, reconstitute 10 mg of powder in 1.09 ml of DMSO. Working concentrations and length of treatment can vary depending on the desired effect.
Store lyophilized at -20ºC, desiccated. In lyophilized form, the chemical is stable for 24 months. Once in solution, store at -20ºC and use within 1 month to prevent loss of potency. Aliquot to avoid multiple freeze/thaw cycles.
Molecular Weight: 305.3 g/mol
Molecular Formula: C14H15N3O5
Solubility: Soluble in DMSO at 30 mg/ml or ethanol at 3 mg/ml.
Entacapone, also known as OR-611, is a catechol O-methyltransferase (COMT) inhibitor with IC50 values ranging from 10 nM to 160 nM for rat duodenum and rat liver COMT, respectively (1,2). Taken as an adjuvant with levodopa/carbidopa therapy, entacapone blocks COMT methylation and subsequent degradation of plasma levodopa, prolonging and improving therapeutic response in Parkinson’s patients (3,4). Entacapone inhibition of COMT also works synergistically with (-)-Epigallocatechin-3-gallate (EGCG) to inhibit human and murine lung cancer cell growth in vitro (5).
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