38 results about "3-methylbutyric acid" patented technology

A method for manufacturing 3-hydroxy-3-methylbutanoic acid (HMB) in commercially viable amounts is disclosed. The reaction mixture cycles through an external heat exchanger while the primary reactant is added in a warmer so as to control and maintain a low temperature for the reaction mixture. The manufacturing process herein disclosed increases yield while decreasing reaction time from the synthetic processes currently practiced.

Provided is a method for using low molecular weight compounds found in the body as a biomarker for diagnosing depression. Specifically, more than one compound selected from a group comprising the following are used: ADP-ribose, ATP, ADP, AMP, serotonin, tryptophan, kynurenine, SDMA (symmetrical dimethylarginine), threonine, glyceric acid, serine, N-acetylaspartic acid, glutamic acid, trigonelline, creatine, 2-methylserine, sphingosine, homovanillic acid, piperidine, sulfoxidized methionine, pipecolic acid, sphinganine, gamma-butyrobetaine, guanidinoacetic acid, isobutyric acid, creatinine, sarcosine, 3-methylbutyric acid, nicotinamide, betaine, ornithine, carnitine, ethanolamine, phosphoethanolamine, taurine, hypotaurine, aspartic acid, methionine, and tyrosine.

The invention discloses an active component for inducing german cockroach. The active component comprises the following constituents in parts by weight: 0.1 to 5 parts of acetic acid, 0.1 to 1 part of isobutyric acid, 0.1 to 1 part of propionic acid, 0.1 to 5 parts of butyric acid, 0.1 to 10 parts of 3-methylbutanoic acid, 0.1 to 10 parts of n-pentanoic acid, 0.1 to 10 parts of n-hexylic acid, 0.1 to 10 parts of 4-methylpentanoic acid, 0.1 to 10 parts of sorbic acid, 0.1 to 10 parts of L-sorbic acid, 0.1 to 10 parts of gamma-decalactone, 0.1 to 10 parts of delta-decalactone, and 0.1 to 5 parts of 3-methylbutanoic acid-beta-benzoquinone ethyl ester. The active component has the inducing effect on both german cockroach imago and larvas of all ages, and specifically has the inducing effect on adult female, therefore, the inducing range is greatly expanded, and good inducing effect is achieved.

The invention discloses high-strength temperature resistant viscoelastic fracturing fluid copolymer which is characterized by comprising the following components in mass percent, 5 to 20 percent of acrylic acid, 10 to 30 percent of acrylic amide, 2 to 15 percent of 2-acrylamide-2-methyl-1-propane sulfonate, 1 to 10 percent of 3-acryloyl imidogen-3-methylbutyric acid, 0.1 to 2 percent of lauryl mercaptan, and the balance of deionized water. The copolymer does not have water-insoluble residue, and has good sand-carrying effect and high-temperature resistance and shearing resistance, the viscosity of the copolymer with the mass fraction being 0.45 percent is kept more than 70 percent after continuous shearing for 1 hour at 170S-1 and below 120 DEG C. Raw material of the copolymer adopts industrial products, and is not required to be purified before reaction. Organic solvent is not used, the copolymer does not pollute the environment, the product yield is high, the reaction process is simple, the operation is easy, and the price is low.

Provided is a method for using low molecular weight compounds found in the body as a biomarker for diagnosing depression. Specifically, more than one compound selected from a group comprising the following are used: ADP-ribose, ATP, ADP, AMP, serotonin, tryptophan, kynurenine, SDMA (symmetrical dimethylarginine), threonine, glyceric acid, serine, N-acetylaspartic acid, glutamic acid, trigonelline, creatine, 2-methylserine, sphingosine, homovanillic acid, piperidine, sulfoxidized methionine, pipecolic acid, sphinganine, gamma-butyrobetaine, guanidinoacetic acid, isobutyric acid, creatinine, sarcosine, 3-methylbutyric acid, nicotinamide, betaine, ornithine, carnitine, ethanolamine, phosphoethanolamine, taurine, hypotaurine, aspartic acid, methionine, and tyrosine.

The invention relates to an antisludging agent for preventing the deposition of Sr / Ba scale and the antisludging agent is used to prevent the deposition of Sr / Ba scale of an oil well during oil field production process. The antisludging agent comprises the following components by weight percent: 8.5-12% of dodecylaminoethyl phosphate, 7.5-9.0% of myristylaminoethyl phosphate, 5-6.5% of EDTA disodium salt, 2.5-3.0% of EDTP tetrasodium salt, 3.5-4.5% of ethylenediamine tetra methylenephosphonic acid, 0.05-0.08% of vitamin A, 0.05-0.12% of vitamin C, 0.005-0.01% of potassium iodide, 0.0005-0.001% of alpha-amino-3-methylbutyric acid, 0.0005-0.0010% of aspartic acid and the balance water, wherein the sum of the weight percentages of the components is 100%. The beneficial effect of the antisludging agent is as follows: when 25-30mg / l of the antisludging agent of the invention is used in the daily maintenance of the oil well, the scale preventing rate is more than 90% and the pump detection period of the oil well can be increased by more than once.

Disclosed is a novel flavor-improving agent. Specifically disclosed is a flavor-improving agent which contains 3-methylbutanoic acid as an active ingredient.

The invention discloses an active component for inducing german cockroach. The active component comprises the following constituents in parts by weight: 0.1 to 5 parts of acetic acid, 0.1 to 1 part of isobutyric acid, 0.1 to 1 part of propionic acid, 0.1 to 5 parts of butyric acid, 0.1 to 10 parts of 3-methylbutanoic acid, 0.1 to 10 parts of n-pentanoic acid, 0.1 to 10 parts of n-hexylic acid, 0.1 to 10 parts of 4-methylpentanoic acid, 0.1 to 10 parts of sorbic acid, 0.1 to 10 parts of L-sorbic acid, 0.1 to 10 parts of gamma-decalactone, 0.1 to 10 parts of delta-decalactone, and 0.1 to 5 parts of 3-methylbutanoic acid-beta-benzoquinone ethyl ester. The active component has the inducing effect on both german cockroach imago and larvas of all ages, and specifically has the inducing effect on adult female, therefore, the inducing range is greatly expanded, and good inducing effect is achieved.

A method for controlling conidial germination and mycelial growth in fungi comprising contacting a fungal cell with anti-fungal small molecules in an amount effective to reduce or inhibit conidial germination and mycelial growth. A method for controlling bark beetle infestations of pine trees comprising contacting one or more fungal cells with anti-fungal small molecules in an amount effective to reduce or inhibit conidial germination and mycelial growth. The anti-fungal small molecules are 5-(p-Bromobenzylidine)-α-isopropyl-4-oxo-2-thioxo-3-thiozolidineacetic acid, 2-[5-(4-chlorobenzylidene)-4-oxo-2-thioxo-1,3-thiazolidin-3-yl]-3-methylbutanoic acid, 2-[5-(4-hydroxybenzylidene)-4-oxo-2-thioxo-1,3-thiazolidin-3-yl]pentanoic acid, [5-(4-isopropylbenzylidene)-4-oxo-2-thioxo-1,3-thiazolidin-3-yl]acetic acid or 2-[5-(2-chlorobenzylidene)-4-oxo-2-thioxo-1,3-thiazolidin-3-yl]pentanoic acid. The species of the fungal cell is selected from a group that has an obligate symbiosis with the mountain pine beetle (Dendroctonus ponderosae) and the western pine beetle (Dendroctonus brevicomis).

The invention discloses amidase, a coding gene and applications thereof. The amino acid sequence of the amidase is represented by the SEQ ID No.2. The amidase gene is cloned from acid-producing Klebsiella oxytoca KCTC 1686 genome. After the expression of the amidase gene, amidase can be successfully obtained, and the amidase has the advantages of high catalytic activity, good stereo-selectivity, high expression amount, and wind substrate spectrum. The obtained amidase can be used to prepare optically-pure chiral compounds especially an important medicine intermediate 2-(4-chlorophenyl)-3-methylbutyric acid. The recombinant amidase can be used to catalyze a racemic substrate 2-(4-chlorophenyl)-3-methylbutyramide, and when the substrate conversion rate is near 50%, the optical purity of the (S)-2-(4-chlorophenyl)-3-methylbutyric acid is 98.5%.

A method for treating a lymphoma selected from non-Hodgkin's and Hodgkin's lymphoma comprising administering an organoarsenic compound having a structure of the formula (I) wherein X is S or Se and R1 and R2 are independently C1-30alkyl (R3, R3′, R4, R5, W and “n” are as defined in claim 1) in particular where the compound is S-dimethylarsinoglutathione, N-(2-S-dimethylarsinothiopropionyl)glycine, 2-amino-3-(dimethylarsino)thio-3-methylbutanoic acid, S-dimethylarsino-thiosuccinic acid or S-dipropylarsino-1-thioglycerol.

The invention discloses an amino acid Schiff base coordination compound (S)-prolyl-2-aminobenzophenone-(S)-2-amino-2, 3-methylbutanoic acid Schiff base nickel, and a preparation method. The preparation method is characterized in that second halogenoalkane participates in the reaction to form the amino acid Schiff base coordination compound. The method prepares the target amino acid Schiff base coordination compound through the reaction of chiral auxiliary alanine Schiff base coordination compound (S)-prolyl-2-aminobenzophenone-(S)-amino acid Schiff base coordination compound and second halogenoalkane isopropyl nickel. The invention widens the application range of chiral auxiliary alanine Schiff base coordination compound (S)-prolyl-2-aminobenzophenone-(S)-amino acid Schiff base nickel, so through the method, more types of non-natural chiral amino acid can be synthetized.

The invention relates to a pork improver, which comprises: 10-20% of glucose oxidase, 50-60% of 3-methylbutanoic acid, 10-15% of fatty acid, 1-3% of sodium chloride, and the balance unavoidable impurities. The pork improver provided by the invention has good use effect.

The invention relates to the field of sterilization and disinfection, and particularly relates to low corrosive oxidation potential sterilization water and a preparation method thereof. The preparation method of the low corrosive oxidation potential sterilization water comprises the following steps: (1) providing an available chlorine provision unit which contains available chlorine or can generate available chlorine; (2) providing a pH value regulation unit; and (3) mixing the pH value regulation unit and the available chlorine provision unit to obtain a strong oxidizing solution, wherein the pH value of the strong oxidizing solution is 2-8, the oxidation-reduction potential is not lower than 600 mV, the available chlorine content is not lower than 3 mg / L, and the sum of the 3-methylbutyric acid content and the 3-methylbutyrate ion content is not higher than 1.8 mol / L. Compared with the existing acidic oxidation potential sterilization water, the sterilization water prepared by the oxidation potential sterilization water preparation method can reduce the corrosion to metal, thereby widening the application range.