Naphazoline (in the hydrochloride form) is the common name for 2-(1-naphthylmethyl)-2-imidazoline hydrochloride. It is a sympathomimetic agent with marked alpha adrenergic activity. It is a vasoconstrictor with a rapid action in reducing swelling when applied to mucous membrane. It acts on alpha-receptors in the arterioles of the conjunctiva to produce constriction, resulting in decreased congestion. It is an active ingredient in several over-the-counter formulations including Clear Eyes and Naphcon eye drops.

CAS：835-31-4
中文别名：2-(1-萘甲)咪唑啉鹽酸鹽;2-(1-萘甲基)-4,5-二氢-1H-咪唑;萘达帕汀;
英文别名：Naphthizine;Antan;Clearine;Nafazolina;naphazoline;
分子式：C14H14N2
分子量：210.274
精确质量：210.116
Psa：24.39
Logp：2.1484

UNII：H231GF11BV

密度：1.15g/cm3
沸点：440.5ºC at 760 mmHg
熔点：254ºC
闪点：220.2ºC
折射率：1.64

RTECS号：NJ4375000
安全说明：S45
WGK Germany：3
危险类别码：R25
危险品运输编码：UN 2811 6.1/PG 2
海关编码：2934999090
危险品标志：T