类白色至微黄色具引湿性的结晶性粉末,几乎无臭,味微苦,在水中极易溶解,在甲醇中易溶,在氯仿中溶解。本品系继利眠宁、安定、羟基安定之后发现的较好的强效催眠镇静药,具有疗效显著、毒性较低、副作用小等特点,国外在1968年首先由瑞士罗氏药厂创制,其后西德、挪威、美、英、意等国家均有商品上市,美国药典20版(1980年)已予收载。国内已由上海大众药厂等单位研制成功,并于1983年5月通过鉴定。 White to light yellow with wet crystalline powder, almost no smell, taste slightly bitter, extremely soluble in water, soluble in methanol, dissolved in chloroform. This product is the better potent hypnotic sedative drug, which is found after Limeminen, Diazepam and Hydroxysteroid stability. It has the characteristics of obvious curative effect, low toxicity and little side effect. The foreign was first created by Roche Pharmaceutical Factory in 1968, Post-West Germany, Norway, the United States, Britain, Italy and other countries have products listed, the United States Pharmacopeia 20th Edition (1980) has been included. China has been the Shanghai Volkswagen Pharmaceutical Factory and other units developed successfully, and in May 1983 passed the appraisal.