Tetrahydrozoline hydrochloride

Tetryzoline

Names
IUPAC name (RS)-2-(1,2,3,4-tetrahydronaphthalen-1-yl)-4,5-dihydro-1H-imidazole
Identifiers
CAS Number	84-22-0 N
3D model (JSmol)	Interactive image
ChEBI	CHEBI:28674 Y
ChemSpider	5226 Y
ECHA InfoCard	100.001.384
KEGG	D08578 Y
PubChem CID	5419
UNII	S9U025Y077 Y
InChI InChI=1S/C13H16N2/c1-2-6-11-10(4-1)5-3-7-12(11)13-14-8-9-15-13/h1-2,4,6,12H,3,5,7-9H2,(H,14,15) Y Key: BYJAVTDNIXVSPW-UHFFFAOYSA-N Y InChI=1/C13H16N2/c1-2-6-11-10(4-1)5-3-7-12(11)13-14-8-9-15-13/h1-2,4,6,12H,3,5,7-9H2,(H,14,15) Key: BYJAVTDNIXVSPW-UHFFFAOYAC
SMILES N\1=C(\NCC/1)C3c2ccccc2CCC3
Properties
Chemical formula	C13H16N2
Molar mass	200.28 g/mol
Pharmacology
ATC code	R01AA06 (WHO) S01GA02 (WHO)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N  (what is YN ?)
Infobox references

Tetryzoline (INN; also known as tetrahydrozoline), a derivative of imidazoline, is found in over-the-counter eye drops and nasal sprays. Other derivatives include naphazoline, oxymetazoline, and xylometazoline.

Tetrahydrozoline is an alpha agonist and its main mechanism of action is the constriction of conjunctival blood vessels. This serves to relieve the redness of the eye caused by minor ocular irritants. To treat allergic conjunctivitis, tetryzoline can be combined in a solution with antazoline.

An urban legend suggests that tetrahydrozoline can cause violent diarrhea if administered orally, such as by putting a few drops of Visine in an unsuspecting person's beverage. However, the actual results of the prank may be worse, varying from severe nausea and vomiting to seizures or a coma. Diarrhea is not a side effect.

Tetrahydrozoline was used as a plot device in the 1990 film The Spirit of '76. Time travelers from the year 2176, where tetrahydrozoline is a rare commodity, have traveled back to 1976 and have to use tetrahydrozoline eye drops, a common item in 1976, as part of a battery in a time machine in order to return to the future.

The 2005 film Wedding Crashers includes the use of eye drops containing tetrahydrozoline to poison a person's drink.