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831 results about "Pyridinium" patented technology

Pyridinium refers to the cation [C₅H₅NH]⁺. It is the conjugate acid of pyridine. Many related cations are known involving substituted pyridines, e.g. picolines, lutidines, collidines. They are prepared by treating pyridine with acids.

Hydrogenated pyridine derivative and method for preparing salt thereof

The invention relates to the hydropyridine derivatives of 2-acetoxy-5- (Alpha-cyclopropyl carbonyl-2-fluorobenzyl) -4, 5, 6, 7-tetrahydrothiophene plus [3, 2-C] pyridine and salts of the hydropyridine derivative as well as the preparation method. The invention comprises following steps: preparing two main intermediates: Alpha-cyclopropyl carbonyl-2 fluorobenzyl halogen 2 (wherein, X=F, CL, Br, I) and 2-oxygen-2, 4, 5, 6, 7, 7 Alpha-hexahydrothiophene plus [3, 2-C] pyridinium salt 3 (wherein, HA=HCL, H2SO4, HBr, HI); esterifying the product obtained through condension of the two main intermediates using acetic anhydride to get target product. The target product and the needed acid are combined to be salts via addition reaction; during the process of crystallization, necessary crystal seed is added to achieve single-morphic crystals.
Owner:LUNAN PHARMA GROUP CORPORATION

Mouth Rinse Emulsions

Disclosed are oral care mouth rinse compositions formulated as stable oil-in-water emulsions comprising:(a) at least about 0.025% by weight of a quaternary ammonium antimicrobial agent,(b) at least about 0.05% by weight of an essentially water-insoluble volatile oil, and(c) at least about 50% by weight water,wherein the emulsion comprises oil droplets having an average mean particle size of about 350 nm or less.Examples of quaternary ammonium antimicrobial agent include cetylpyridinium chloride (CPC), tetradecylpyridinium chloride, N-tetradecyl-4-ethyl pyridinium chloride or domiphen bromide.
Owner:THE PROCTER & GAMBLE COMPANY
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