Phentolamine

Phentolamine
Clinical data
Trade names	Regitine, Oraverse
AHFS/Drugs.com	Monograph
Routes of; administration	intravenous, intramuscular, eye drops
ATC code	C04AB01 (WHO) V03AB36 (WHO), G04BE05 (WHO);
Legal status
Legal status	US: ℞-only;
Pharmacokinetic data
Metabolism	Liver
Elimination half-life	19 minutes
Identifiers
	IUPAC name 3-[(4,5-Dihydro-1H-imidazol-2-ylmethyl)(4-methylphenyl)amino]phenol;
CAS Number	50-60-2 ;
PubChem CID	5775;
IUPHAR/BPS	502;
DrugBank	DB00692 ;
ChemSpider	5571 ;
UNII	Z468598HBV;
KEGG	D08362 ;
ChEBI	CHEBI:8081 ;
ChEMBL	ChEMBL597 ;
CompTox Dashboard (EPA)	DTXSID4023462 ;
ECHA InfoCard	100.000.049
Chemical and physical data
Formula	C17H19N3O
Molar mass	281.359 g·mol−1
3D model (JSmol)	Interactive image;
	SMILES Oc3cc(N(c1ccc(cc1)C)CC/2=N/CCN\2)ccc3;
	InChI InChI=1S/C17H19N3O/c1-13-5-7-14(8-6-13)20(12-17-18-9-10-19-17)15-3-2-4-16(21)11-15/h2-8,11,21H,9-10,12H2,1H3,(H,18,19) ; Key:MRBDMNSDAVCSSF-UHFFFAOYSA-N ;
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Phentolamine, sold under the brand name Regitine among others, is a reversible^[1] nonselective α-adrenergic antagonist.^[2]

^ Jewell JR, Longworth DL, Stoller JK, Casey D (2003). The Cleveland Clinic internal medicine case reviews. Hagerstown, MD: Lippincott Williams & Wilkins. p. 32. ISBN 0-7817-4266-8.
^ Phentolamine at the U.S. National Library of Medicine Medical Subject Headings (MeSH)