ARN 077 is a selective N-acylethanolamine acid amidase (NAAA) inhibitor (IC50: 7 nM for human NAAA). ARN 077 significantly increases palmitoyl ethanolamine (PEA) levels within the CNS.
ARN19689 is an effective inhibitor of human NAAA, demonstrating high potency in the low nanomolar range (IC 50 = 0.042 μM). The compound acts through a non-covalent mechanism, highlighting its ability to interact with the enzyme for inhibition.