Systems and methods for extracting useful by-products and natural rubber from non-Hevea rubber bearing plants are disclosed.

The present invention relates to a type of aryl benzofuran amidated derivatives, the medical use thereof, and the preparation method; said derivatives have antioxidation activity, and xanthine oxidase inhibitory activity, and can be used for antioxidation and for preparing compositions, drugs and health products and treating gout and hyperuricemia.

The invention provides processes for preparing purified cell-binding agent cytotoxic agent conjugates comprising subjecting a mixture comprising a cell-binding agent cytotoxic agent conjugate and one or more impurities to a polyvinyl difluoride (PVDF) membrane to remove at least a portion of the impurities from the mixture, thereby providing a purified cell-binding agent cytotoxic agent conjugate.

The subject of the invention is a novel process for the preparation of Carboprost tromethamine salt where alkylation the enone of the general formula (II) is carried out in the presence of a chiral auxiliary in aprotic solvent with a Grignard reagent. The methyl ester epimers of formula (VII) are separated by gravity silicagel chromatography and the salt formation is carried out by using solid tromethamine base.

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A method includes removing glyphosate from a solution by contacting the solution with a mesoporous inorganic particle having an average pore size of greater than zero and less than about 50 nm, wherein the mesoporous inorganic particle is functionalized with a positively charged moiety selected from ammonium, amine and combinations thereof.

Method for the processing of a mixture of organic compounds, in particular of an oil, in order to recover different constituents therefrom. This method makes it possible to separate a fraction of iso-alkanes and cycloalkanes from a sample of a mixture of organic compounds, said method comprising a separation step by liquid chromatography.

The present disclosure relates to a method of separating a compound of interest, particularly unsaturated compound(s) of interest, from a mixture. The compound is separated using a column having a chromatographic stationary phase material for various different modes of chromatography containing a first substituent and a second substituent. The first substituent minimizes compound retention variation over time under chromatographic conditions. The second substituent chromatographically and selectively retains the compound by incorporating one or more aromatic, polyaromatic, heterocyclic aromatic, or polyheterocyclic aromatic hydrocarbon groups, each group being optionally substituted with an aliphatic group.

The present disclosure relates to a method of separating a compound of interest, particularly unsaturated compound(s) of interest, from a mixture. The compound is separated using a column having a chromatographic stationary phase material for various different modes of chromatography containing a first substituent and a second substituent. The first substituent minimizes compound retention variation over time under chromatographic conditions. The second substituent chromatographically and selectively retains the compound by incorporating one or more aromatic, polyaromatic, heterocyclic aromatic, or polyheterocyclic aromatic hydrocarbon groups, each group being optionally substituted with an aliphatic group.

In one aspect, the present invention provides a chromatographic stationary phase material for various different modes of chromatography represented by Formula 1: [X](W).sub.a(Q).sub.b(T).sub.c (Formula 1). X can be a high purity chromatographic core composition having a surface comprising a silica core material, metal oxide core material, an inorganic-organic hybrid material or a group of block copolymers thereof. W can be absent and/or can include hydrogen and/or can include a hydroxyl on the surface of X. Q can be a functional group that minimizes retention variation over time (drift) under chromatographic conditions utilizing low water concentrations. T can include one or more hydrophilic, polar, ionizable, and/or charged functional groups that chromatographically interact with the analyte. Additionally, b and c can be positive numbers, with the ratio 0.05?(b/c)?100, and a?0.

In one aspect, the present invention provides a chromatographic stationary phase material for various different modes of chromatography represented by Formula 1: [X](W).sub.a(Q).sub.b(T).sub.c (Formula 1). X can be a high purity chromatographic core composition having a surface comprising a silica core material, metal oxide core material, an inorganic-organic hybrid material or a group of block copolymers thereof. W can be absent and/or can include hydrogen and/or can include a hydroxyl on the surface of X. Q can be a functional group that minimizes retention variation over time (drift) under chromatographic conditions utilizing low water concentrations. T can include one or more hydrophilic, polar, ionizable, and/or charged functional groups that chromatographically interact with the analyte. Additionally, b and c can be positive numbers, with the ratio 0.05?(b/c)?100, and a?0.