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A0232 Sigma-Aldrich

Alfuzosin hydrochloride

≥98% (HPLC), solid

Synonym: N-(3-((4-Amino-6,7-dimethoxy-2-quinazolinyl)methylamino)propyl)tetrahydro-2-furancarboxamide hydrochloride, Uroxatral hydrochloride

  • CAS Number 81403-68-1

  • Empirical Formula (Hill Notation) C19H27N5O4 · HCl

  • Molecular Weight 425.91

  •  MDL number MFCD00879135

  •  PubChem Substance ID 329770590

  •  NACRES NA.77



Related Categories A-AM, Adrenergics, Adrenergics - Antagonists, Antagonists- Adrenergics, Approved Therapeutics/Drug Candidates,
Quality Level   100
assay   ≥98% (HPLC)
form   solid
solubility   DMSO: >10 mg/mL
  H2O: insoluble
originator   Sanofi Aventis
SMILES string   Cl.COc1cc2nc(nc(N)c2cc1OC)N(C)CCCNC(=O)C3CCCO3
InChI   1S/C19H27N5O4.ClH/c1-24(8-5-7-21-18(25)14-6-4-9-28-14)19-22-13-11-16(27-3)15(26-2)10-12(13)17(20)23-19;/h10-11,14H,4-9H2,1-3H3,(H,21,25)(H2,20,22,23);1H
Gene Information   human ... ADRA1A(148), ADRA1B(147), ADRA1D(146)



5, 25 mg in glass bottle

Biochem/physiol Actions

Alfuzosin hydrochloride is an alpha-adrenergic blocker used to treat benign prostatic hyperplasia (BPH). It works by relaxing the muscles in the prostate and bladder neck, making it easier to urinate.

Features and Benefits

This compound is also offered as part of Sigma′s Library of Pharmacologically Active Compounds (LOPAC®1280), a biologically annotated collection of high-quality, ready-to-screen compounds. Click here to learn more.

This compound is featured on the α1-Adrenoceptors and α2-Adrenoceptors pages of the Handbook of Receptor Classification and Signal Transduction. To browse other handbook pages, click here.

This compound was developed by Sanofi Aventis. To browse the list of other pharma-developed compounds and Approved Drugs/Drug Candidates, click here.

Legal Information

LOPAC is a registered trademark of Sigma-Aldrich Co. LLC

Safety & Documentation

Safety Information

Personal Protective Equipment 
NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

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Protocols & Articles


Alpha 1 Adrenoceptor Modulators

α1-Adrenoceptors are widely distributed, and are activated either by norepinephrine released from sympathetic nerve terminals or by epinephrine released from the adrenal medulla. Receptor activation ...
Keywords: Apoptosis, Atomic absorption spectroscopy, Gene expression, Gluconeogenesis, Transduction

Alpha 2 Adrenoreceptor Modulators

α2-Adrenoceptors are widely distributed and are activated by norepinephrine (A7257, A0937), released from sympathetic nerve terminals or by epinephrine (E4250, E4375), released from the adrenal medul...
Keywords: Analgesics, Atomic absorption spectroscopy, Cardiovascular, Eliminations, Gene expression, Genetic, Neurotransmission, Neurotransmitters, Transduction

Antihypertensive Agents

Agents that inhibit angiontensin-converting enzymes (ACE) and angiotensin II formation are essential to cardiovascular medicine.1 These inhibitors are used not only to treat essential hypertension an...
Sami Barghshoon
BioFiles v7 n5, 2012, 5–20
Keywords: AGE, Antihypertensives, Cardiovascular, Clinical, Diuretics, PAGE, Reductions

Peer-Reviewed Papers


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