Zoxazolamine (INN, USAN, BAN) (brand name Contrazole, Deflexol, Flexin, Miazol, Uri-Boi, Zoxamine, Zoxine) is a muscle relaxant that is no longer marketed. It was synthesized in 1953 and introduced clinically in 1955 but was withdrawn due to hepatotoxicity. One of its active metabolites, chlorzoxazone, was found to show less toxicity, and was subsequently marketed in place of zoxazolamine. These drugs activate IKCa channels.

CAS：61-80-3
中文别名：苯并恶唑胺;氯苯唑胺;
英文别名：2-Benzoxazolamine, 5-chloro-;5-chloro-1,3-benzoxazol-2-amine;
分子式：C7H5ClN2O
分子量：168.58
精确质量：168.009
Psa：52.05
Logp：2.6446

MDL号：MFCD00005770

密度：1.481 g/cm3
沸点：316.8ºC at 760 mmHg
熔点：181-184°C(lit.)
闪点：145.4ºC
折射率：1.692
储存条件：库房通风低温干燥

RTECS号：DM4550000
安全说明：S26-S36
WGK Germany：3
危险类别码：R20/21/22; R36/37/38
海关编码：2934999090
危险品标志：Xn
危险性描述：H302; H312; H315; H319; H332; H335
信号词：Warning
危险性防范说明：P261; P280; P305 + P351 + P338
危险标志：GHS07