| Bioactivity | Arbutamine is a short-acting, potent and nonselective β-adrenoceptor agonist. Arbutamine stimulates cardiac β1-, tracheal β2-, and adiopocyte β3- adrenergic receptors. Arbutamine provides cardiac stress increases heart rate, cardiac contractility, and systolic blood pressure. Arbutamine can be used for cardiac stress agent [1][2][3]. |
| Target | β-adrenoceptor |
| Invitro | Arbutamine (0.1-100 nM) increases heart contractile force and pD2 value of 8.45. Arbutamine has the affinity constants (KA) value of 7.32 for cardiac β1-adrenergic receptors[3]. |
| In Vivo | Arbutamine (i.v.; 5, 10, 50, 100, and 250 ng/kg/min) increases mean heart rate, peak positive left ventricular pressure and its first time-derivative, and normal-zone myocardial thickening in 8 open-chest dogs (mean weight, 26.91 kg)[3]. |
| Name | Arbutamine |
| CAS | 128470-16-6 |
| Formula | C18H23NO4 |
| Molar Mass | 317.38 |
| Appearance | Solid |
| Transport | Room temperature in continental US; may vary elsewhere. |
| Storage | -20°C, protect from light, stored under nitrogen *In solvent : -80°C, 6 months; -20°C, 1 month (protect from light, stored under nitrogen) |
| Reference | [1]. Ruiz M, et al. Arbutamine stress perfusion imaging in dogs with critical coronary artery stenoses: (99m)Tc-sestamibi versus (201)Tl. J Nucl Med. 2002 May;43(5):664-70. [2]. Nagarajan R, et al. A novel catecholamine, arbutamine, for a pharmacological cardiac stress agent. Cardiovasc Drugs Ther. 1996 Mar;10(1):31-8. [3]. Abou-Mohamed G, et, al. Characterization of the adrenergic activity of arbutamine, a novel agent for pharmacological stress testing. Cardiovasc Drugs Ther. 1996 Mar;10(1):39-47. |