quaternary ammonium derivative

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• quaternary ammonium compound — noun a compound derived from ammonium with hydrogen atoms replaced by organic groups; used as surface active agents, disinfectants, and in drugs • Hypernyms: ↑organic compound * * * noun also quaternary ( es) : any of a large class of strong… …   Useful english dictionary

• quaternary ammonium compound — noun An amine derivative, containing four radicals, of general formula RRRR NX; the radicals may be the same, different, or part of a ring; X is any univalent cation such as OH. See Also: primary amine, secondary amine, tertiary amine …   Wiktionary

• Trimethyl ammonium compounds — are a type of quaternary ammonium compound with three methyl groups at the nitrogen, with a more complicated carbon chain derivative at the fourth position.Examples include: * Betaine * Bethanechol * Carnitine and its derivatives * Choline and… …   Wikipedia

• QX-222 — Open channel blocker at nicotinic acetylcholine receptors; a quaternary ammonium derivative of the local anaesthetic Lidocaine. In mouse muscle AChR it blocks by interacting with adjacent turns of the M2 (membrane spanning region) helix …   Dictionary of molecular biology

• Scopolamine — A venerable drug that is a naturally occurring member of a large chemical class of compounds called alkaloids. Scopolamine was first introduced into medical usage in 1902. The name comes from that of the 18th century Italian naturalist Giovanni… …   Medical dictionary

• methscopolamine — meth·sco·pol·amine .meth skō päl ə .mēn, mən n an anticholinergic quaternary ammonium derivative of scopolamine that is usu. used in the form of its bromide C18H24BrNO4 for its inhibitory effect on gastric secretion and gastrointestinal motility… …   Medical dictionary

• methylatropine nitrate — meth·yl·at·ro·pine ni·trate (meth″əl atґtro pēn) a quaternary ammonium derivative of atropine, having the same actions and uses as atropine (q.v.), but with much less effect on the central nervous system and with strong ganglionic …   Medical dictionary

• Amine — For other uses, see Amine (disambiguation). Primary amine Secondary amine Tertiary amine …   Wikipedia

• 5-HT3 antagonist — 5 HT3 receptor antagonists Drug class Skeletal formula of ondansetron, the prototypical 5 HT3 antagonist ATC code A04AA …   Wikipedia

• Functional group — For other uses, see Functional group (disambiguation) and Moiety (disambiguation). Benzyl acetate has an ester functional group (in red), an acetyl moiety (circled with green) and a benzyloxy moiety (circled with orange). Other divisions can be… …   Wikipedia

• Hydrogen peroxide — IUPAC name …   Wikipedia