| Description | EHNA hydrochloride is a chemical compound recognized for its antiviral, antitumor, and antiarrhythmic properties. It functions as a potent and selective inhibitor of both cyclic nucleotide phosphodiesterase 2 (PDE2) with an IC50 of 4 μM and adenosine deaminase (ADA). Additionally, it effectively inhibits the activity of cGMP-stimulated PDE II (cGs-PDE) with IC50 values of 0.8 μM in humans and 2 μM in porcine myocardium, although its inhibitory effects on unstimulated PDE2 activity are less pronounced. |
| In vitro | EHNA exhibits normal Michaelian kinetics of inhibition for the cyclic GMP-stimulated PDE2 activity with Hill plots near unity.EHNA prevents dAdo degradation and increases mitochondrial dATP levels in fibroblasts.EHNA completely ablates the ability of cyclic GMP to activate PDE2 activity, whilst having a much smaller inhibitory effect on the unstimulated PDE2 activity. |
| Target activity | PDE2A (human):0.8 μM |
| molecular weight | 313.83 |
| Molecular formula | C14H24ClN5O |
| CAS | 58337-38-5 |
| Storage | Powder: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice. |
| References | 1. Podzuweit T, et al. Isozyme selective inhibition of cGMP-stimulated cyclic nucleotide phosphodiesterases by erythro-9-(2-hydroxy-3-nonyl) adenine.Cell Signal. 1995 Sep;7(7):733-8. 2. Michie AM, et al. Rapid regulation of PDE-2 and PDE-4 cyclic AMP phosphodiesterase activity following ligation of the T cell antigen receptor on thymocytes: analysis using the selective inhibitors erythro-9-(2-hydroxy-3-nonyl)-adenine (EHNA) and rolipram.Cell Signal. 1996 Feb;8(2):97-110. 3. Blázquez-Bermejo C, et al. Increased dNTP pools rescue mtDNA depletion in human POLG-deficient fibroblasts. FASEB J. 2019 Jun;33(6):7168-7179. |