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Acetonitrile is used mainly as a solvent in the purification of butadiene in refineries. Specifically, acetonitrile is fed into the top of a distillation column filled with hydrocarbons including butadiene, and as the acetonitrile falls down through the column, it absorbs the butadiene which is then sent from the bottom of the tower to a second separating tower.
Sublingual and buccal medication administration is a way of giving someone medicine orally (by mouth). Sublingual administration is when medication is placed under the tongue to be absorbed by the body. The word "sublingual" means "under the tongue." Buccal administration involves placement of the drug between the gums and the cheek.
The medication has some antiandrogenic activity, which may help to improve androgen-dependent symptoms like acne, and has no other important hormonal activity. [1] [2] [7] [15] [16] Dienogest was discovered in 1979 and was introduced for medical use in 1995. [17] [18] [19] Additional formulations of dienogest were approved between 2007 and 2010.
Methods of administration include oral, sublingual (dissolving the drug under the tongue), and rectal. Parenteral administration is via a peripheral or central vein. [1] In pharmacology, the route of drug administration is important because it affects drug metabolism, drug clearance, and thus dosage. The term is from Greek enteros 'intestine'.
The Food and Drug Administration sent shockwaves through the food industry this week when the agency announced it is revoking its authorization of red dye No. 3. The dye, which is used in some ...
If you are a heroin addict looking to get sober, Mike Greenwell, the center’s intake supervisor, is the first man you talk to. On a Saturday night in late March, Greenwell, 61, was still at his desk doing paperwork. He used to be a nightclub manager before alcohol and drug use got the better of him. He keeps a little radio tuned to classic rock.
Meropenem, sold under the brand name Merrem among others, is an intravenous carbapenem antibiotic used to treat a variety of bacterial infections. [3] Some of these include meningitis, intra-abdominal infection, pneumonia, sepsis, and anthrax.
The aqueous solution consists of acrylonitrile, acetonitrile, hydrocyanic acid, and ammonium sulfate (from excess ammonia). A recovery column removes bulk water, and acrylonitrile and acetonitrile are separated by distillation. One of the first useful catalysts was bismuth phosphomolybdate (Bi 9 PMo 12 O 52) supported on silica. [11]