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Levoamphetamine [note 1] is a stimulant medication which is used in the treatment of certain medical conditions. [10] It was previously marketed by itself under the brand name Cydril, but is now available only in combination with dextroamphetamine in varying ratios under brand names like Adderall and Evekeo.
In the lab, phenyl-2-nitropropene is produced by the reaction of benzaldehyde and nitroethane in the presence of a basic catalyst like n-butylamine.The reaction is a nitroaldol reaction, and is a variant of a Knoevenagel condensation reaction, which is one of a broader class of reactions called Henry condensations, or simply Henry reactions.
The oral bioavailability of amphetamine varies with gastrointestinal pH; [20] it is well absorbed from the gut, and bioavailability is typically 90%. [10] Amphetamine is a weak base with a p K a of 9.9; [ 189 ] consequently, when the pH is basic, more of the drug is in its lipid soluble free base form, and more is absorbed through the lipid ...
GNC Holdings, LLC (an initialism of General Nutrition Centers) is an American multinational retail and nutritional manufacturing company based in Pittsburgh, Pennsylvania. [5] [6] It specializes in health and nutrition related products, including vitamins, supplements, minerals, herbs, sports nutrition, diet, and energy products.
Indicated for exogenous obesity, [3] between 1965 and 1973, Obetrol was marketed in 10 mg and 20 mg strength through Obetrol Pharmaceuticals division of the American pharmaceutical company Rexar. When sold directly to physicians, Obetrol used the brand name Oby-Rex .
The metal is heated and burnt by the laser beam, cutting the metal sheet. [20] The quality of the edge can be mirror smooth and a precision of around 0.1 mm (0.0039 in) can be obtained. Cutting speeds on thin 1.2 mm (0.047 in) sheet can be as high as 25 m (82 ft) per minute.
[20] Methylphenidate – a benzylpiperidine derivative that may improve working memory, episodic memory, and inhibitory control, aspects of attention, and planning latency in healthy people. [13] [15] It also may improve task saliency and performance on tedious tasks. [17]
Production of galvannealed sheet steel begins with hot dip galvanization of sheet steel. After passing through the galvanizing zinc bath the sheet steel passes through air knives to remove excess zinc, and is then heated in an annealing furnace for several seconds causing iron and zinc layers to diffuse into one another causing the formation of zinc-iron alloy layers at the surface.