940 results about "Isothiocyanate" patented technology

An antimicrobial composition, including a synergistic combination of three or more agents as an active ingredient. Each of the three or more potentiating agents can be selected from the following types of compounds: sequestering agents, carbohydrates and carbohydrate derivatives, terpenes/terpenoids, amines and amine derivatives, plant-derived oils, sulfonates, phenols, fatty acids, dibenzofuran derivatives, organo isothiocyanates, quaternary ammonium compounds, peroxides and peroxide donors, and macrolide polyenes. At least two of the three or more potentiating agents are not of the same type of compound. The antimicrobial composition can have strong antimicrobial efficacy in control of microorganisms having resistance to currently used antimicrobials.

The present invention relates to a method capable of using natural and artificial synthetic isosulfocyanate compound or its derivative to prevent and cure prostatic diseases and skin carcinoma. The internal tests show that various isosulfocyanate compounds or their derivatives can induce prostatic cell II phase drug metabolic detoxication enzyme-glutathione transferase so as to can inhibit the hyperplasia of prostate and inflammation, and can prevent and cure prostatic carcinoma and skin carcinoma.

The present invention relates to methods of preventing or inhibiting the growth of Helicobacter through the use of a composition that comprises a glucosinolate, an isothiocyanate or a derivative or metabolite thereof. The present invention also relates to methods of preventing or treating persistent chronic gastritis, ulcers and/or stomach cancer in subjects at risk for, or in need of treatment thereof.

The present invention aims at extracting, separating and purifying the active components of Maka as one natural plant to obtain extractive with several medicinal and health care values. Fresh or dried Maka root material is extracted and separated to obtain active components and extracted residue. The active components includes glucosinolate and its decomposed product isothiocynate in 10-90 wt%,Maka amide and Maka olefin 5-70 wt% and sterol 2-30 wt%. The active components may be further prepared into capsule, tablet, and delayed releasing forms, and the prepared medicine and health food have the functions of treating climacteric syndrome, strengthening male's and female's sexuality, improving sexual function, etc.

A transparent, non elastomeric, high index, impact resistant polythiourethane/urea material comprising the reaction product of: a) at least one (alpha, omega)-diiso(thio)cyanate cycloaliphatic or aromatic prepolymer having a number average molecular weight ranging from 100 to 3000 gmol-1, and b) at least one primary diamine, in an equivalent molar ratio amine function/iso(thio)cyanate function from 0.5 to 2, preferably from 0.90 to 1.10, wherein, said prepolymer and diamine are free from disulfide (-S-S-) linkage and at least one of the prepolymer or the diamine contains one or more S atoms in its chain.

An aminated complex-type oligosaccharide derivative, for example, of the formula (1)

wherein R¹ is H—(CO)—CH₂X, —NH—(CO)—(CH₂)_b—CH₂X, isothiocyanate group, —NH—(CO)_a—(CH₂)_b—CO₂H or —NH—(CO)_a—(CH₂)_b—CHO, X being a halogen atom, a being 0 or 1, b being an integer of 1 to 4, R² and R³ are a hydrogen atom or a group of the formulae (2) to (5) and may be the same or different, except for the case where both R² and R³ are hydrogen or the formula (5), and the case where one of R² and R³ is a hydrogen atom, with the formula (5) serving as the other thereof.

The present invention relates to a chemical reagent for detecting mercury ion in water and its preparation method. Said invention provides the structural formula of said reagent, and its preparation method includes the following steps: firstly, synthesizing rhodamine hydrazide, adding rhodamine dye in container, dissolving by using organic solvent, adding hydrazine hydrate, heating to make reflux reaction until the rhodamine dye colour is eliminated, filtering, washing the obtained solid by using water to obtain rhodamine hydrazide compound, adding organic solvent to dissolve said compound, adding aryl isothiocyanate, heating mixture and making reflux reaction, removing organic solvent, using column chromatography to make separation so as to obtain target product.

The invention discloses a wide-spectrum plant cold-resisting agent for plants such as food crops, economic crops, vegetables, fruit trees, economic trees, flowers, and lawns. The active component of the agent is chitosanoligosaccharide or a derivative thereof. The chitosanoligosaccharide is oligosaccharide of glucosamine linked through beta-1,4-glucosidic bond, and has a molecular weight of 300-10000Da, and a deacetylation degree of 50-100%. The chitosanoligosaccharide derivatives are chitosanoligosaccharide sulfuric acid derivative, chitosanoligosaccharide hydrochloric acid derivative, chitosanoligosaccharide phosphoric acid derivative, chitosanoligosaccharide sulfonamide derivative, chitosanoligosaccharide acyl isothiocyanate derivative, chitosanoligosaccharide phosphoric derivative, chitosanoligosaccharide guanidine derivative, chitosanoligosaccharide nicotinicacyl isothiocyanate derivative, chitosanoligosaccharide-cerium (IV) complex, and the like.

The invention discloses a fluorescence quantitative PCR detection kit of hepatitis B virus and an application thereof. The kit is composed of the following independent components: DNA extraction solution I, DNA extraction solution II, DNA extraction solution III, DNA extraction solution IV, positive control interior label, PCR reaction liquid, probe HBV-SP, enzyme mixed liquor containing heat resistant DNA polyase and uracil DNA glycosylase, quantitative hepatitis B virus reference material, hepatitis B virus positive control serum and hepatitis B virus negative control serum, wherein DNA extraction solution I contains 0.2-1.0% of lauryl sodium sulphate (mass/volume), 1.0-4.0% of Triton (volume/volume) and 0.2-1.0mol/L of guanidinium isothiocyanate; DNA extraction solution II contains 100-300mmol/L of 4-HEPES, 100-300mmol/L of sodium chloride with pH of 6.5+/-0.2 and 100-400 mu g/ml of magnetic beads; DNA extraction solution III contains 0.1-1.0% of Triton (volume/volume) and 100-300mmol/L of sodium chloride; DNA extraction solution IV contains mineral oil. The fluorescence quantitative PCR detection kit of hepatitis B virus of the invention can be used for detecting the HBV-DNA concentration in samples of serum, blood plasma or latex and the like.

The present invention discloses compounding process and usage of spice oil composition for preserving fruit. The spice oil composition is compounded with natural spice oils containing rich eugenol, cinnamyl aldehyde, thymol and isosulfocyanate in certain weight proportion as materials, and through mixing. It has high antioxidant and antiseptic effect and no toxicity, and may be used widely for preserving various kinds of fruit. It is diluted with alcohol to form alcohol solution for soaking and coating fruit, or mixed with inert porous powder as carrier, with the absorbing powder being packed in penetrating package and set inside fruit packing box to preserve fruit through fumigation.

The invention provides an extration method of plant RNA by utilizing guanidinium isothiocyanate-chloroform extractive and Tris purification. The invention improves traditional guanidinium isothiocyanate method, adopts the two steps of chloroform extration after cracking and phenol-adding for purification, and respectively extract high-quality total RNA from the leaf blade and seed case of red-skinned pears, the leaf blade, fruit flesh and seed case tissues of grapes, the fruit of strawberries and the callus of arnebia euchroma. The extraction buffer liquid in the method contains guanidinium isothiocyanate, sodium dodecyl sarcosinate, sodium citrate, soluble polyvinylpyrrolidone and beta-mercaptoethanol, which can not only crack plant cells efficiently and release RNA, but also effectivelyinhibit the activity of RNA enzyme, and can also prevent the oxidation of phenolic compounds and suppress the interference of secondary metabolites. In the second step, Tris purification is utilized for crude extraction of RNA solution, which can eliminate the polysaccharides and protein which can coprecipitate with RNA. The invention is simple in operating steps, economic and practical, good in stability, and suitable for extracting high-quality total RNA from plant tissue rich in polysaccharides and polyphenols and secondary metabolites.

The invention discloses a diester-based 2-thiocyanate ester derivate applied in sulphide flotation, and the preparation method thereof. Diester-based 2-thiourea (the formula one) or diester-based 2-ethionine ester (the formula two) is applied as a novel collector for high efficiently recycling valuable sulfide minerals from metal sulphide ores by floatation. The collector has wide pH range in ore magma, thereby having strong ability to collect copper sulphide minerals such as chalcopyrite, etc., lead sulfide minerals or zinc sulfide minerals activated by copper ions, nickel sulfide minerals as well as noble metal minerals such as gold, silver, etc., and having good selectivity to gangue sulphide minerals such as iron pyrites, pyrrhotite, etc.

The present invention relates to a composition for optical materials, comprising (a) a compound having in one molecule at least one structure represented by the following Formula 1: wherein R<1 >is a C0-10 hydrocarbon group, each of R<2>, R<3 >and R<4 >is a C1-10 hydrocarbon group or hydrogen, Y is O, S, Se or Te, m is 1 to 5, and n is 0 to 5; (b) a compound having in one molecule at least one isocyanate group and/or at least one isothiocyanate group; (c) a compound having in one molecule at least one mercapto group; and (d) an inorganic compound having sulfur atom and/or selenium atom, and also relates to an optical material produced by polymerization curing the composition, a production method thereof, and an optical lens comprising the optical material. The present invention provides a high refractive, high Abbe's number optical material having an improved impact resistance.

Agents that stimulate nuclear translocation of Nrf2 protein and the subsequent increases in gene products that detoxify and eliminate cytotoxic metabolites are provided in a method for treating glaucomatous retinopathy or optic neuropathy. The structurally diverse agents that act on the Nrf2/ARE pathway induce the expression of enzymes and proteins that possess chemically versatile cytoprotective properties and are a defense against toxic metabolites and xenobiotics. Agents include certain electrophiles and oxidants such as a Michael Addition acceptor, diphenol, thiocarbamate, quinone, 1,2-dithiole-3-thione, butylated hydroxyanisole, flavonoid, an isothiocyanate, 3,5-di-tert-butyl-4-hydroxytoluene, ethoxyquin, a coumarin, combinations thereof, or a pharmacologically active derivative or analog thereof.

The invention discloses a high refractivity resin lens and a preparation method thereof; the preparation method comprises the following steps: mixing one or more of sulfur-containing monomers with one or more of polyisocyanates or isothiocyanate compound in a molar ratio of 0.8-1.3:1 evenly, then adding phosphate internal releasing agent accounting for 0.05-2% of the total mass of the above mixture and organo-tin catalyst accounting for 0.005-0.1% of the total mass of the above mixture, then adding light stabilizer, ultraviolet absorbent and antioxidant according to the standards and demands of resin lens synthesis and obtaining the lens by polymerization. The refractivity nD of the lens prepared by the method of the invention can reach 1.6725, the comprehensive performance is increased and the lens can be widely used as the lens of the telescope, the sighting telescope, the magnifier and the camera, thus expanding the application range of the resin lens.

The present invention relates to an insecticidal mildeco-proofing fumigant product using allyl isosulfocyanate as active component. Its composition includes (by wt%) 1-80% of allyl isosulfocyanate, 0.1-5% of antioxidation agent and the rest is adjuvant. Said invention can be made into oil miscible liquid, emulsifiable concentrate, emulsion in water or tablet, etc. and can be extensively used in grain depot, tobacco storage and textiles storage and can be used for making sterilization treatment of soil.