Naphazoline

Naphazoline
Clinical data
Trade names	Clear Eyes, Cleari, Naphcon-A, Rohto
AHFS/Drugs.com	Monograph
Routes of; administration	Ophthalmic drug administration, nasal administration
ATC code	R01AA08 (WHO) S01GA01 (WHO);
Legal status
Legal status	In general: Over-the-counter (OTC);
Identifiers
	IUPAC name 2-(naphthalen-1-ylmethyl)-4,5-dihydro-1H-imidazole;
CAS Number	835-31-4 ;
PubChem CID	4436;
IUPHAR/BPS	5509;
DrugBank	DB06711 ;
ChemSpider	4283 ;
UNII	H231GF11BV;
KEGG	D08253 ;
ChEMBL	ChEMBL761 ;
CompTox Dashboard (EPA)	DTXSID3048449 ;
ECHA InfoCard	100.011.492
Chemical and physical data
Formula	C14H14N2
Molar mass	210.280 g·mol−1
3D model (JSmol)	Interactive image;
	SMILES N\1=C(\NCC/1)Cc2cccc3c2cccc3;
	InChI InChI=1S/C14H14N2/c1-2-7-13-11(4-1)5-3-6-12(13)10-14-15-8-9-16-14/h1-7H,8-10H2,(H,15,16) ; Key:CNIIGCLFLJGOGP-UHFFFAOYSA-N ;
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Naphazoline is a medicine used as a decongestant, and a vasoconstrictor added to eye drops to relieve red eye. It has a rapid action in reducing swelling when applied to mucous membranes. It is a sympathomimetic agent with marked alpha adrenergic activity that acts on alpha-receptors in the arterioles of the conjunctiva to produce constriction, resulting in decreased congestion.

It was patented in 1934 and came into medical use in 1942.