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The most widely practiced example of this reaction is the ethylation of benzene. Approximately 24,700,000 tons were produced in 1999. [ 73 ] Highly instructive but of far less industrial significance is the Friedel-Crafts alkylation of benzene (and many other aromatic rings) using an alkyl halide in the presence of a strong Lewis acid catalyst.
Benzodiazepine withdrawal syndrome (BZD withdrawal) is the cluster of signs and symptoms that may emerge when a person who has been taking benzodiazepines as prescribed develops a physical dependence on them and then reduces the dose or stops taking them without a safe taper schedule.
*** Benzene is a carcinogen (cancer-causing agent). *** Very flammable. The pure material, and any solutions containing it, constitute a fire risk. Safe handling: Benzene should NOT be used at all unless no safer alternatives are available. If benzene must be used in an experiment, it should be handled at all stages in a fume cupboard.
Potential explanations include exacerbating cognitive problems that are already common in anxiety disorders, causing or worsening depression and suicidality, [124] [125] disrupting sleep architecture by inhibiting deep stage sleep, [126] withdrawal symptoms or rebound symptoms in between doses mimicking or exacerbating underlying anxiety or ...
Benzotrichloride (BTC), also known as α,α,α-trichlorotoluene, phenyl chloroform or (trichloromethyl)benzene, is an organic compound with the formula C 6 H 5 CCl 3. Benzotrichloride is an unstable, colorless or somewhat yellowish, viscous, chlorinated hydrocarbon with a penetrating odor.
Hexachlorobenzene, or perchlorobenzene, is an aryl chloride and a six-substituted chlorobenzene with the molecular formula C 6 Cl 6.It is a fungicide formerly used as a seed treatment, especially on wheat to control the fungal disease bunt.
The symptoms of DRESS syndrome usually begin 2 to 6 weeks but uncommonly up to 8–16 weeks after exposure to an offending drug. Symptoms generally include fever, an often itchy rash which may be morbilliform or consist mainly of macules or plaques, facial edema (i.e. swelling, which is a hallmark of the disease), enlarged and sometimes painful lymph nodes, and other symptoms due to ...
Benzodiazepine withdrawal symptoms may occur if use is suddenly decreased. [14] [16] Alprazolam was invented by Jackson Hester Jr. at the Upjohn Company [20] and patented in 1971 and approved for medical use in the United States in 1981. [14] [21] Alprazolam is a Schedule IV controlled substance and is a common drug of abuse.