Abstract: A method and composition for suppressing the immune response are disclosed which employ an immunosuppressing effective amount of certain substituted quinoline, naphthyridine and pyrido-pyrazine derivatives.

Abstract: The present invention relates to ophthalmological pharmaceutical compositions comprising (benzothiadiazine, benzamide and benzenesulfonyl)phenyl-substituted carboxyalkyl dipeptide compounds and to methods for using said composition in reducing intraocular pressure, e.g., in the treatment of glaucoma.

Abstract: Novel methods for preparing 2-cyano-6-chloropyridines are disclosed. The compounds are useful as intermediates in preparing other intermediates or as intermediates directly used in making pesticides, especially herbicides.

Abstract: Novel intermediates useful in the preparation of fluorophenoxyphenoxypropionates and derivatives thereof which possess herbicidal activity selectively in the presence of broadleaf crops.

Abstract: In a substance such as a membrane, a cell or virus having at least one aperture of a diameter of about 10,000 Angstroms or less, a process for measuring and characterizing the diameter of the aperture, comprising:(a) contacting the substance with a solution of a plurality of dense star polymers;(b) passing through or into the aperture at least one dense star polymer having a molecular diameter of about equal to or less than the diameter of the aperture; and(c) calculating the diameter of the aperture from measurements of either those dense star polymers passing therethrough or thereinto the aperture, of those dense star polymers not passing therethrough or thereinto, or of the combined measurements of those dense star polymers passing therethrough or thereinto the aperture and those not passing therethrough or thereinto.

Abstract: A method and an apparatus are described for fluorinating substances utilizing a fluoride-ion valve.

Abstract: Novel substituted .alpha.-hydroxybutynoic compounds and compositions, are used to increase photosynthesis in plants.

Abstract: In accordance with the present invention, 2,3,5,6-tetrachloropyridine is advantageously prepared by contacting pentachloropyridine in a solvent selected from the group consisting of alkylnitriles, water, alkylsulfoxides, tetramethylsulfone, C-1 to C-5 alcohols, alkyl carbonates and mixtures thereof, in the presence of an ammonium salt of an organic or inorganic acid with about 0.7 to about 1.1 g atoms of zinc per mole of pentachloropyridine.

Abstract: A process for preparing O-alkylated halopyridinate compounds is described. The process does not require the use of added organic solvents.

Abstract: Composite materials useful as hard tissue prosthetics comprising synthetic biodegradable polymers and unsintered calcium phosphate biomaterials optionally porositized by pore-forming agents are described. The composite materials may be ground and blended with a compatible water soluble pore-forming agent and then molded to form dense, shaped objects which may be made porous by leaching out said water soluble pore-forming agent. The composites may be used as hard tissue prosthetics either alone or in conjunction with conventional prostheses.

Abstract: Teichomycin A.sub.2 is recovered from whole culture fermentation broth of Actinoplanes teichomyceticus sp. or any similar microorganism producing Teichomycin A.sub.2 by extracting the broth with a water miscible solvent, such as acetone, acetonitrile, dimethylsulfoxide, n-propanol, methyl ethyl ketone or mixtures thereof.

Abstract: Novel pyridyloxyphenoxyalkanoates, alkenoates, R-enantiomers and derivatives thereof possess herbicidal activity selectively in the presence of broadleaf crops with preemergent or postemergent applications.

Abstract: Novel aryloxyphenoxyalkanoates, alkenoates, R-enantiomers and derivatives thereof possess herbicidal activity selectively in the presence of broadleaf crops with preemergent or postemergent applications.

Abstract: A novel apparatus and a process for fluorinating organic compounds from halogen-containing organic compounds is disclosed.

Abstract: A method is disclosed for preparing a chlorinated .beta.-methylpyridine by chlorinating a .beta.-methylpyridine compound with PCl.sub.5 in the presence of phenylphosphonic dichloride.

Abstract: Tetrachloropyridine, more specifically 2,3,5,6-tetrachloropyridine, can be efficiently prepared by reacting pentachloropyridine in water with an oxidizable metal such as zinc, in the absence of an added mineral or organic hydrogen donating acid.

Abstract: Novel intermediates useful in the preparation of fluorophenoxyphenoxypropionates and derivatives thereof which possess herbicidal activity selectively in the presence of broadleaf crops.

Abstract: Novel composition and method for thermally stabilizing an O-pyridyl phosphate insecticide such as chlorpyrifos. The insecticide is mixed with a phthalate ester prior to its incorporation into a thermoplastic resin, such as polyvinyl chloride.

Abstract: Novel substituted oxirane compounds of the formula ##STR1## wherein R is halogen or --CF.sub.3 ; n is an integer from 0 to 5; and X.sub.1, X.sub.2, X.sub.3, X.sub.4 and X.sub.5 are halogen, and are useful as herbicidal compounds.

Abstract: Novel compounds used as intermediates for making herbicides are disclosed. The novel compounds include acid chlorides of 2-(4-((3-chloro-5-(trifluoromethyl)-2-pyridinyl)oxy)phenoxy)propanoic acid and 2-(4-((5-(trifluoromethyl)-2-pyridinyl)oxy)phenoxy)propionic acid.