Alprenolol hydrochloride  (Synonyms: (RS)-Alprenolol hydrochloride; dl-Alprenolol hydrochloride)

Alprenolol ((RS)-Alprenolol; dl-Alprenolol) hydrochloride is an orally active non-selective β-adrenoceptor antagonist and an antagonist of 5-HT1A and 5-HT1B receptors. Alprenolol hydrochloride is used as an anti-hypertensive, anti-anginal and anti-arrhythmic agent^[1][2][3].

Alprenolol (p.o., 50 mg/kg) hydrochloride causes a significant drop in blood pressure which averages 20 mm Hg (at 3-hr) and an increase in heart rate by 39 beats/min (at 3-hr) in conscious renal hypertensive dogs^[1].
Alprenolol (i.p., 5 mg/kg) hydrochloride effectively blockes the anxiolytic effects of indorenate and ipsapirone but do not reduce the motor activity in adult male Swiss Webster mice^[2].
Alprenolol (intravenous injection, 0.5 or 1.0 mg/kg) can decrease systolic pressure by a mean of 10 mm Hg, diastolic pressure by a mean of 10 mm Hg) hydrochloride and heart rate by 23 beats/min, as well as slightly reduce both myocardial and liver blood flows by mean of 17% and 15% respectively at a dose of 1.0 mg/kg in cats^[3].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

285.81

Solid

C₁₅H₂₄ClNO₂

13707-88-5

OC(COC1=CC=CC=C1CC=C)CNC(C)C.[H]Cl

Room temperature in continental US; may vary elsewhere.

4°C, sealed storage, away from moisture

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

• [1]. Himori N, et al. Effects of beta-adrenoceptor blocking agents, pindolol, alprenolol and practolol on blood pressure and heart rate in conscious renal hypertensive dogs. Arch Int Pharmacodyn Ther. 1977 Jan;225(1):152-65.  [Content Brief]

  [2]. Fernández-Guasti A, et al. Evidence for the involvement of the 5-HT1A receptor in the anxiolytic action of indorenate and ipsapirone. Psychopharmacology (Berl). 1990;101(3):354-8.  [Content Brief]

  [3]. Parratt JR, et al. Myocardial and haemodynamic effects of the beta-adrenoceptor blocking drug alprenolol (H56/28) in anaesthetized cats. Br J Pharmacol. 1969 Oct;37(2):357-66.  [Content Brief]