WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 526525

CAS#: 118931-00-3

Description: Abanoquil, also known as UK 52046, is an alpha-1 adrenoceptor antagonist. Abanoquil is able to relax contracted tissue strips and induce erectile response when injected intracorporally. The erectile response in the monkeys was not dose-related and compared to the effect of papaverine injections, abanoquil induced a lower level of tumescence and rigidity. Hence, abanoquil might be useful as a facilitator of erection in the pharmacological treatment of erectile dysfunction.

Price and Availability




Abanoquil, is not in stock, may be available through custom synthesis. For cost-effective reason, minimum 1 gram order is requested. The product will be characterized by NMR, HPLC and MS analysis. Purity (HPLC) is usually >98%. CoA, QC data, MSDS will be provided when product is successfully made. The estimated lead time is 2-3 months. Please send email to sales@medkoo.com to inquire quote.

Chemical Structure


Theoretical Analysis

MedKoo Cat#: 526525
Name: Abanoquil
CAS#: 118931-00-3
Chemical Formula: C22H25N3O4
Exact Mass: 395.1845
Molecular Weight: 395.459
Elemental Analysis: C, 66.82; H, 6.37; N, 10.63; O, 16.18

Synonym: UK 52046; UK-52046; UK52046; Abanoquil

IUPAC/Chemical Name: 4-Amino-2-(3,4-dihydro-6,7-dimethoxy-2(1H)-isoquinolyl)-6,7-dimethoxyquinoline


InChi Code: InChI=1S/C22H25N3O4/c1-26-18-7-13-5-6-25(12-14(13)8-19(18)27-2)22-10-16(23)15-9-20(28-3)21(29-4)11-17(15)24-22/h7-11H,5-6,12H2,1-4H3,(H2,23,24)


Technical Data

Solid powder

>98% (or refer to the Certificate of Analysis)

Shipping Condition:
Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition:
Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Soluble in DMSO, not in water

Shelf Life:
>2 years if stored properly

Drug Formulation:
This drug may be formulated in DMSO

Stock Solution Storage:
0 - 4 C for short term (days to weeks), or -20 C for long term (months).

Harmonized System Code:


1: Uprichard AG, Harron DW, Wilson R, Shanks RG. Effects of the myocardial-selective alpha 1-adrenoceptor antagonist UK-52046 and atenolol, alone and in combination, on experimental cardiac arrhythmias in dogs. Br J Pharmacol. 1988 Dec;95(4):1241-54. PubMed PMID: 2905912; PubMed Central PMCID: PMC1854280.

2: Tham TC, Guy S, Shanks RG, Harron DW. Dose-dependent alpha 1-adrenoceptor antagonist activity of the anti-arrhythmic drug, abanoquil (UK-52,046), without reduction in blood pressure in man. Br J Clin Pharmacol. 1992 Apr;33(4):405-9. PubMed PMID: 1349492; PubMed Central PMCID: PMC1381330.

3: Schafers RF, Elliott HL, Meredith PA, Miller SH, Reid JL. Studies with abanoquil (UK-52,046) a novel quinoline alpha 1-adrenoceptor antagonist: II. Duration of action, pharmacokinetics and concentration-effect relationships in normotensive subjects. Br J Clin Pharmacol. 1991 Nov;32(5):605-10. PubMed PMID: 1683250; PubMed Central PMCID: PMC1368638.

4: Schafers RF, Elliott HL, Howie CA, Reid JL. Studies with abanoquil (UK-52,046) a novel quinoline alpha 1-adrenoceptor antagonist: I. Effects on blood pressure, heart rate and pressor responsiveness in normotensive subjects. Br J Clin Pharmacol. 1991 Nov;32(5):599-604. PubMed PMID: 1683249; PubMed Central PMCID: PMC1368637.

5: Giraldi A, Wyllie M, Wagner G. Abanoquil, a new alpha-1 adrenoceptor antagonist. In vitro and in vivo effect on erectile tissue. Int J Impot Res. 2000 Mar;12 Suppl 1:S37-40. PubMed PMID: 10845763.

6: Kaye B, Clark MW, Cussans NJ, Macrae PV, Stopher DA. The sensitive determination of abanoquil in blood by high-performance liquid chromatography/atmospheric pressure ionization mass spectrometry. Biol Mass Spectrom. 1992 Nov;21(11):585-9. PubMed PMID: 1360817.

7: Giraldi A, Wyllie M, Wagner G. Abanoquil, a new alpha-1 adrenoceptor antagonist. In vitro and in vivo effect on erectile tissue. Int J Impot Res. 2000 Mar;12(S1):S37-S40. PubMed PMID: 10849564.

8: Yasutake M, Avkiran M. Effects of selective alpha 1A-adrenoceptor antagonists on reperfusion arrhythmias in isolated rat hearts. Mol Cell Biochem. 1995 Jun 7-21;147(1-2):173-80. PubMed PMID: 7494547.

9: Toivonen L. Influence of acute alpha 1-adrenergic antagonism on heart rate variability in patients with old myocardial infarction. J Cardiovasc Pharmacol. 1994 Jun;23(6):932-5. PubMed PMID: 7523785.

10: Vanoli E, Hull SS Jr, Foreman RD, Ferrari A, Schwartz PJ. Alpha 1-adrenergic blockade and sudden cardiac death. J Cardiovasc Electrophysiol. 1994 Jan;5(1):76-89. PubMed PMID: 7910510.

11: Chess-Williams R, Aston N, Couldwell C. Alpha 1A-adrenoceptor subtype mediates contraction of the rat urethra. J Auton Pharmacol. 1994 Dec;14(6):375-81. PubMed PMID: 7876271.

12: Anyukhovsky EP, Guo SD, Danilo P Jr, Rosen MR. Responses to norepinephrine of normal and "ischemic" canine Purkinje fibers are consistent with activation of different alpha 1-receptor subtypes. J Cardiovasc Electrophysiol. 1997 Jun;8(6):658-66. PubMed PMID: 9209967.

13: Spiers JP, Harron DW, Wilson R. Duration of action and effect on baroreflex function of the anti-arrhythmic alpha 1 antagonist UK-52,046. J Pharm Pharmacol. 1991 Jan;43(1):70-2. PubMed PMID: 1676070.

14: Spiers JP, Harron DW, Wilson R, Allen JD. UK-52,046 (a novel alpha 1-adrenoceptor antagonist) and the role of alpha-adrenoceptor stimulation and blockade on atrioventricular conduction. J Cardiovasc Pharmacol. 1990 Nov;16(5):824-30. PubMed PMID: 1703607.

15: Barin ES, Wong CK, Elstob JE, Davies DW, Nathan AW. An acute study of the electrophysiological and haemodynamic effects of intravenous UK-52,046, a novel alpha 1-adrenoceptor antagonist. Br J Clin Pharmacol. 1990 Mar;29(3):359-62. PubMed PMID: 1968756; PubMed Central PMCID: PMC1380138.

16: Flores NA, Sheridan DJ. Electrophysiological and antiarrhythmic effects of UK 52,046-27 during ischaemia and reperfusion in the guinea-pig heart. Br J Pharmacol. 1989 Mar;96(3):670-4. PubMed PMID: 2720297; PubMed Central PMCID: PMC1854398.

17: Chapple CR, Burt RP, Andersson PO, Greengrass P, Wyllie M, Marshall I. Alpha 1-adrenoceptor subtypes in the human prostate. Br J Urol. 1994 Nov;74(5):585-9. PubMed PMID: 7530122.

18: Flores NA, Sheridan DJ. Electrophysiological effects of alpha-adrenoceptor stimulation in perfused and superfused myocardium. J Mol Cell Cardiol. 1991 Aug;23(8):973-85. PubMed PMID: 1682501.

19: McKaigue JP, Harron DW. Effect of UK-52,046, an alpha 1-adrenoceptor antagonist, on baroreflex function in man. Br J Clin Pharmacol. 1990 Oct;30(4):579-84. PubMed PMID: 1981319; PubMed Central PMCID: PMC1368248.

20: Silke B, Zezulka AV, Verma SP, Tham TC, Taylor SH. Haemodynamic dose-response effects of UK-52,046 in ischaemic disease with or without impaired left ventricular function. Br J Clin Pharmacol. 1990 Jun;29(6):749-58. PubMed PMID: 1974144; PubMed Central PMCID: PMC1380178.