Phenazepam (also known in Russia as bromdihydrochlorphenylbenzodiazepine) is a benzodiazepine drug, which was developed in the Soviet Union in 1974 and now produced in Russia and some CIS countries. Phenazepam is used in the treatment of various psychiatric and neurological disorders. It can be used as a premedication before surgery as it augments the effects of anesthetics and reduces anxiety. Recently, phenazepam has gained popularity as a recreational drug; misuse has been reported in the United Kingdom, Finland, Sweden, and the United States.

CAS：51753-57-2
中文别名：5-(2-氯苯基)-7-溴-1,4-苯并二氮杂卓-2-酮;7-溴-5-(2-氯苯基)-1,3-二氢-3H-1,4-苯并二氮杂卓-2-酮;7-溴-5-(2-氯苯基)-1,3-二氢-2H-1,4-苯并二氮杂卓-2-酮;5-(2-氯苯基)-7-溴-1,4-苯并二氮杂卓;
英文别名：7-bromo-5-(2-chlorophenyl)-1,3-dihydro-1,4-benzodiazepin-2-one;7-Bromo-5-(2-chlorophenyl)-1,3-dihydro-3H-1,4-benzodiazepin-2-one;
分子式：C15H8BrClN2O
分子量：347.594
精确质量：345.951
Psa：42.85
Logp：4.0729

MDL号：MFCD00423674

外观与性状：白色或灰白色结晶粉末
密度：1.61 g/cm3
沸点：493ºC at 760 mmHg
熔点：225-230ºC
闪点：251.9ºC
折射率：1.691
储存条件：Controlled Substance, -20ºC Freezer

海关编码：3003909090