Organoboranes

<p>Applications Triphenylsilanethiol is a useful organic building block used for carboxyl activation via silylthioesterification, and in the preparation of synthesis of tetraphenylporphyrinate manganese(III) siloxides.<br>References Lamar, A. A.; et al.: Tetrahedron Lett., 56, 6034 (2015); Meininger, D. J.; et al.: J. Coord. Chem., 69, 1970 (2016).<br></p>

<p>Applications p-Aminophenyl Arsenoxide is a useful reagent for the study of 2-oxoacid dehydrogenase multienzyme complexes.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Stevenson, et al.: Biochemistry, 17, 11, 2191 (1978)<br></p>

<p>Applications Di-tert-butyldichlorosilane (cas# 18395-90-9) is a useful research chemical.<br></p>

<p>Applications Aminophenyltrimethoxysilane is a useful intermediate for the preparation of aromatic silanes as high thermal stability coupling agents.<br>References Pan, Y., et al.: Adv. Mat. Res., 690, 1483 (2013)<br></p>

<p>Applications Decaborane is a useful building block mostly used in the preparation of carboranes. On its own, Decaborane is able to undergo reduction via acetate as a neat liquid.<br> E0<br>References Marsh, A. V.; et al.: Angew. Chem. Int. Ed., 57, 10640 (2018); Kelley, S. P.; et al.: ACS Omega, 3, 8491 (2018).<br></p>

<p>Stability Moisture Sensitive<br>Applications Chlorotrimethylsilane have been used in the preparation of volatile derivatives of a wide range of compounds for GC analysis. Chlorotrimethylsilane has been used for silylation and as a protection group in the process of various organic synthesis.<br> E0<br>References Casimiro, M., et al.: Org. Lett., 15, 2378 (2013); Lifchits, O., et al.: J. Am. Chem. Soc., 135, 6677 (2013);<br></p>

<p>Applications (E)-2-(1-Butenyl)-1,3,2-benzodioxaborole (cas# 106094-36-4) is a compound useful in organic synthesis.<br></p>

<p>Applications OCTADECYLTRIETHOXYSILANE (cas# 7399-00-0) is a useful research chemical.<br></p>

<p>Applications Heptamethylcyclotetrasiloxan-2-ol is a derivative of Octamethylcyclotetrasiloxane (O237145), which is an organometallic reagent that can be used in the preparation of siloxane polymers, with high surface-hydrophobicity restoration.<br>References Fritz, O., et al.: MRS Online Proceedings Library, 1535 (2012); Vanossi, A., et al.: Condensed Matter (2013);<br></p>

<p>Stability Moisture Sensitive (Reactive)<br>Applications Iodotrimethylsilane is a reagent used for cleaving ethers, esters, carbamates, ketals and lactones.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Heck, M., et al.: Tetrahedron Lett., 35, 5445 (1994); Hiral, G., et al.: Biorg. Med. Chem. Lett., 14, 2647 (2004)<br></p>

<p>Stability Moisture Sensitive<br>Applications Tris(trimethylsiloxy)silane functions as a modified siloxane elastomer for controlled cell growth or as a biomaterial surface that induces a desired cellular response.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Gibson, A. L., et al.: Mater. Res. Soc. Symp. Proc., 711, 169 (2002)<br></p>

<p>Applications Hydrogen Tetrafluoroborate(1-) is a useful building block for organic synthesis.<br>References Ohkuma, T., et al.: Journal of the American Chemical Society., 218, 8724 (2006)<br></p>

<p>Applications Used to protect alcohols during organic synthesis.<br>References Shen, H., et al.: J. Med. Chem., 53, 2666 (2010), Qiang, L., et al.: Bioorg. Med. Chem. Lett., 20, 836 (2010),<br></p>

<p>Applications tert-Butyldiphenylchlorosilane is used to synthesize interphenylene phenyloxazoles, compounds that have antagonistic activity against thromboxane receptors which can be used for treatment of circulatory disorders, angina and stroke.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Hadjipavlou–Litina, D. &amp; Kontogiorgis, C.: Int. Elect. J. Mol. Des., 1, 300 (2002); Misra, R., et al.: Bioorg. Med. Chem. Lett., 2, 937 (1992)<br></p>

<p>Stability Light and Temperature sensitive<br>Applications PFPA-silane is a functionalized perfluorophenyl azides for covalent immobilization of ultrathin polymer films.<br>References Mosbach, K., et al.: Biotechnology, 14, 163 (1996), Keren, K., et al.: Science, 297, 72 (2002), Lidstrom, M., et al.: Nature Rev. Microbiol., 1, 158 (2003),<br></p>

<p>Applications N,O-Bis(trimethylsilyl)acetamide is used as a reagent in the synthesis of 4'-spirocyclic phosphono-nucleosides as potential inhibitors of hepatitis C virus NS5B polymerase. Also used as a reagent in the microwave-assisted synthesis of purine nucleosides as selective cholinesterase inhibitors.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Dang, Q., et al.: Tetrahedron Lett., 55, 4407 (2014); Schwarz, S., et al.: Org. Biomol. Chem., 12, 2446 (2014)<br></p>

<p>Applications Octamethyl-1,7-tetrasiloxanediol, can be used in the preparation of Silicone coated Celgard-2400 for the adhesion of canine platelets and leucocytes.<br>References Chawla, A. S.: Biomaterials, 2, 83 (1981)<br></p>

<p>Applications 1,1,3,3,5,5,7,7,9,9,11,11-DODECAMETHYLHEXASILOXANE (cas# 995-82-4) is a useful research chemical.<br></p>

<p>Applications Used as a reactant in the preparation of pyrimidinone ribosides and analogs that show anti-tumor properties.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Driscoll, J.S. et al.: J. Med. Chem., 34, 3280 (1991); Pan, L. et al.: J. Pharm. Biomed. Anal., 52, 589 (2010);<br></p>

<p>Applications Vinyltrimethoxysilane (cas# 2768-02-7) is a useful research chemical.<br></p>

<p>Applications Phenylboronic Acid is a compound used in organic synthesis of various pharmaceutical goods.<br>References Ainley, A.D., et al.: J. Chem. Soc., 2171 (1930);<br></p>

<p>Applications A non-cyclic polydimethyl siloxane. Study shows that it can be transformed by a specific microflora and in the natural environment degraded by mechanisms similar to other organic compounds.<br>References Watanabe, N. et al.: Ecotoxic. Env. Safety, 11, 174 (1986); Wasserbauer, R. et al.: Folia Microbiologica, 35, 384 (1990);<br></p>

<p>Applications Tetramethylammonium Triacetoxyborohydride is used in the synthesis of Peloruside A. Epoxypropanoate is a neurokinin substance P receptor antagonist synthesized from this compound.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Gazaille, J. et al.: Org. Lett., 14, 178 (2012); Prevost, S. et al.: Tetrahedron Asymm., 21, 16 (2010);<br></p>

<p>Applications 3-Carboxyphenylboronic Acid is used in phenylboronic acid-decorated gelatin nanoparticles for enhanced tumor targeting and penetration.<br>References Wang, X., et al.: Nanotechnology, 27, 385101 (2016); Wang, X., et al.: Eur. J. Pharm. Biopharm., 113, 168 (2017)<br></p>

<p>Applications 2-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)isophthalonitrile, is an intermediate used for the synthesis of more complex compounds.<br></p>

<p>Applications Trimethoxy(octyl)silane is a surface modifier used as additive for polymer encapsulation and for controlled drug delivery.<br>References Erdem, B., et al.: Langmuir, 17, 2664 (2001); Doadrio, J., et al.: J. Mater. Chem., 16, 462 (2006);<br></p>

<p>Applications Triisopropylsilane is used in the design of internalizing PSMA-specific Glu-ureido-based radiotherapeuticals for prostrate cancers. Reagent for the rational design of dual peptides targeting ghrelin and Y2 receptors to regulate food intake and body weight. Also functions as a highly selective reducing agent used in the preparation of anti-1,2-diols.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Wuestemann, T., et al.: Theranostics, 6, 1085 (2016); Kilian, T., et al.: J. Med. Chem., 58, 4180 (2015); Horners, L.; et al.: Organomet. Chem., 282, 155 (1985)<br></p>

<p>Applications (1-acetyl-2,3-dihydro-1H-indol-5-yl)boronic acid (cas# 905971-97-3) is a useful research chemical.<br></p>

<p>Applications Hydroxydi-p-tolylborane is a building block used as a reactant in the nickel-catalyzed cross-coupling of diarylborinic acids with aryl chlorides.<br>References Chen, X., et al.: ACS Catalys., 4, 379 (2014);<br></p>

<p>Applications Trimethylsilyl azide is used to mediate Schmidt rearragement reactions and is also used as a nucleophile in organic synthesis. Versatile azidonation reagent for amines, amides, aldehydes, and ketones.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Mphahlele, M.: J. Chem. Soc. Perk. T. 1, 23, 3477 (1999); Pastor, I. &amp; Yus, M.: Org. Chem., 9, 1 (2005)<br></p>

<p>Applications Hexamethylcyclotrisiloxane is used in the preparation of Silicone coated Celgard-2400 for the adhesion of canine platelets and leucocytes.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Chawla, A.S.: Biomaterials, 2, 83 (1981)<br></p>

<p>Applications A cyclic volatile methylsiloxane (cVMS) used in cosmetic and personal care products. Used in dermal exposure and inhalation toxicity study.<br>References Wang, R. et al: Env. Int., 35, 900 (2009); Johnson, B. et al.: Chem. Ind. Digest, 23, 79 (2010); Reddy, M.D, et al.: Toxic. Sci., 105, 275 (2008);<br></p>

<p>Stability Moisture Sensitive<br>Applications 1-(Trimethylsiloxy)cyclohexene is used as a reagent in the synthesis of 6-Methyl Chrysene (M265140); an aryl hydrocarbon receptor (AhR) agonist that has been listed as possibly carcinogenic to humans.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Amin, S. et al.: Cancer Res., 45, 6406 (1985); Blaha, L. et al.: Toxicol. Sci., 65, 43 (2002); Brack, W. et al.: Environ. Sci. Technol., 37, 3062 (2003); Andrysik, Z. et al.: Mutat. Res., 615, 87 (2007)<br></p>

<p>Applications 2-Fluoro-3-methoxyphenylboronic acid<br></p>

<p>Applications Butylboronic Acid is a boronic acid derivative that can be used as a transport carriers in membrane-based sugar separations. Butylboronic Acid is used as an analytical reagent in the determination of serum glucose.<br>References Smith, B.D. et al.: ACS Symp. Ser., 642, 194 (1996); Prendergast, J.L. et al.: Anal. Bional. Chem., 397, 1779 (2010);<br></p>

<p>Quinolin-4-ylboronic acid is a heterocyclic compound with two nitrogen atoms that are attached to the ring by means of carbonyl groups. This compound is a precursor in the synthesis of the drug dorsomorphin, which is used for pain relief. It also has an important role in pharmacokinetics because it can be used as a marker for estimating blood levels of other drugs. Quinolin-4-ylboronic acid yields an active form, quinolin-4-yl boronic acid, when reacted with piperazine in basic conditions. The drug ldn-193189 is a derivative of this active form and has been evaluated as a potential drug for treating osteoporosis and cancer.</p>

<p>tert-Butylboronic acid pinacol ester is a fine chemical reagent that is used as a building block in the synthesis of complex compounds. It is an intermediate in reactions involving the conversion of alcohols to esters with the use of acid catalysts. Tert-butylboronic acid pinacol ester has been shown to be a useful scaffold for organic synthesis, and can be used as a high quality reaction component. It also has applications as a research chemical and speciality chemical.</p>

<p>Nepsilon-4-nitro-Z-L-lysine is a plant nutrient that can be used in agricultural and horticultural applications. It is a particle that can be added to the soil to improve fertility and stimulate plant growth. Nepsilon-4-nitro-Z-L-lysine has been shown to have a protective effect on plants against insect pests and fungal infections, as well as inhibiting the formation of toxic compounds during fermentation. This product also provides an alternative to chemical treatment and can be used for environmental monitoring or mesoscale studies. Nepsilon-4-nitro-Z-L-lysine has been shown to improve horse fertility and reduce the number of treatments required for resistant bacterial infections.</p>

<p>(S)-BoroLeu-(+)-pinanediol-trifluoroacetate is a useful scaffold, building block, and intermediate for the synthesis of complex compounds. It is a high quality reagent that can be used in research chemicals and speciality chemicals. (S)-BoroLeu-(+)-pinanediol-trifluoroacetate is a versatile building block because it can be used as a reaction component in the synthesis of fine chemicals and as an intermediate in the synthesis of other reagents. CAS No. 477254-69-6</p>

<p>2,3-Dimethoxyphenylboronic acid is a synthetic molecule that contains a boronic acid group. This compound has been shown to interact with histones H3 and L6. It has also been shown to modify lysine residues on the histone H3 protein by methylation. In addition, 2,3-dimethoxyphenylboronic acid interacts with other molecules in a way that changes their conformation and this interaction can be studied using vibrational spectroscopy. Organic chemists may use 2,3-dimethoxyphenylboronic acid as a ligand for biological targets or as a means of modifying proteins.</p>

<p>N-alpha-Fmoc-Nepsilon-1-(4,4-dimethyl-2,6-dioxocyclohex-1-ylidene)ethyl-L-lysine is a synthetic amide with a peptide backbone. It has been shown to have anti tumor activity in vivo and in vitro against a variety of solid tumor xenografts. The compound was conjugated to the integrin receptor ligand RGD, which is expressed on the surface of various types of cancer cells. This modification increased the uptake of N-alpha-Fmoc-Nepsilon-1-(4,4 dimethyl 2,6 dioxocyclohex1 ylidene)ethyl L lysine by leukemia cells and solid tumor xenografts.</p>

<p>1,1,1,3,5,7,7,7-Octamethyltetrasiloxane is a volatile liquid that is used as a fumigant. It is used in the manufacture of silicone elastomers and sealants. This chemical has been shown to be an effective sealant and to have good adhesion properties. It also has excellent resistance to high temperatures and chemicals. The mechanism of 1,1,1,3,5,7,7,7-octamethyltetrasiloxane is not fully understood but it may involve hydrogen bonding with the organic solvent. In addition to its use as a sealant and fumigant this chemical can be used as a ligand for bifunctional catalysts for polymerization reactions or for kinetic studies on polyolefins</p>

<p>N-α,ε-Bis-Fmoc-D-lysine is a protease inhibitor that inhibits the protease activity of a number of proteases, including trypsin, chymotrypsin and elastase. It is an immunogenic protein. N-α,ε-Bis-Fmoc-D-lysine has been shown to be effective in preventing the immune response against peptides when used as an adjuvant for vaccines. This protein has also been shown to have proton nmr spectral properties that are similar to those of natural amino acids and therefore may not be detected by the immune system as a foreign antigen. N-α,ε-Bis-Fmoc-D-lysine has been postulated to act as a cell maturation agent through its ability to inhibit protein synthesis or cellular growth.</p>

<p>Dimethyl(methylthio)sulfonium Tetrafluoroborate (DMTSBF) is a synthetic, activated, nucleophilic reagent that has the ability to cleave disulfide bonds in proteins. DMTSBF is used for the synthesis of fatty acids and other organic compounds. It can also be used as an analytical reagent for determining the blood group of proteins. The chloride ion is necessary for this reaction. DMTSBF reacts with a nucleophile (e.g., hydroxyl, amine, thiol) to form a new bond and release sodium carbonate and silver trifluoromethanesulfonate.</p>

<p>3,4-Bis(trifluoromethyl)phenylboronic acid is a versatile building block that can be used as a reagent in organic synthesis. It has been shown to be a high quality product with the CAS number 1204745-88-9. This chemical is used to produce fine chemicals and research chemicals. 3,4-Bis(trifluoromethyl)phenylboronic acid is also a useful intermediate in the production of complex compounds and can be used as a building block for speciality chemicals.</p>

<p>1-Cyano-4-(dimethylamino)pyridinium tetrafluoroborate (CDAP) is an organic cyanylating agent.  It is reactive under acidic conditions giving CDAP an advantage over other sulfhydryl labeling agents, as it can avoid potential thiol-disulfide exchange.</p>

<p>N-Ethylheptadecafluoro-N-[3-(Trimethoxysilyl)Propyl]Octanesulphonamide is a membrane filtration technology that is used to remove all organic and inorganic pollutants from water. It is effective for the removal of oils, pesticides, herbicides, detergents, antibiotics, and heavy metals. N-Ethylheptadecafluoro-N-[3-(Trimethoxysilyl)Propyl]Octanesulphonamide is also used to treat wastewater and surface water. This process can be used on large quantities of water with high efficiency. The use of this process can be beneficial for the health of humans, animals, and the environment.</p>

<p>Polymethylhydrosiloxane is a polymer that is used in coatings and adhesives. It has been shown to be an efficient aid for removing copper chloride from water and can be applied to the treatment of calcium carbonate sludge. Poly(methylhydrosiloxane) also has high affinity for fatty esters, which is important for its use as a mass analyzer in environmental pollution studies. This polymer has been shown to have excellent kinetic and optical properties, making it a good candidate for electrochemical studies.</p>

<p>(3,4,5-Trimethoxyphenyl)boronic acid is an active analogue of 3,4,5-trimethoxybenzoic acid. It has potent anti-inflammatory properties and inhibits cancer cell proliferation. (3,4,5-Trimethoxyphenyl)boronic acid has been shown to inhibit the growth of cancer cells in vitro by binding to the gyrase enzyme. This drug also has biological properties that may be useful for treating human liver diseases such as hepatic steatosis or nonalcoholic fatty liver disease (NAFLD).</p>

<p>Ferroceneboronic acid is a reagent, complex compound, useful intermediate, fine chemical and useful scaffold. It is also a versatile building block for the synthesis of speciality chemicals. Ferroceneboronic acid reacts with an organic halide to form a ferrocenyl-containing boronate ester that is useful as a reaction component in organic synthesis. The CAS number for ferroceneboronic acid is 12152-94-2.</p>

<p>N-Ethylbenzene-2,4,6-triphenyl pyridinium tetrafluoroborate is a reagent that can be used in chemical reactions. It is a fine chemical and research chemicals with high quality and a versatile scaffold. It is useful as an intermediate in the synthesis of complex compounds. N-Ethylbenzene-2,4,6-triphenyl pyridinium tetrafluoroborate has CAS number 66310-06-3.</p>

<p>4-Fluorophenylboronic acid is a boron compound that has been used in molecular modeling and functional assays. It has been shown to be a strong ligand for palladium complexes and can be used to synthesize metal complexes. 4-Fluorophenylboronic acid has also been shown to bind to the CB2 receptor with high affinity and selectivity, making it a potential drug for the treatment of pain. This compound can be synthesized by many different methods, but one of the most common is the synthesis from phenylacetic acid and boron trifluoride gas. The other methods include direct reaction with phenylboronic acid, or by heating anhydrous copper chloride in anhydrous hydrochloric acid with boric acid at high temperatures. Magnetic resonance spectroscopy (MRS) has also been used to study its properties. Canagliflozin is an example of a drug that contains this chemical group as</p>

<p>(2-Aminophenyl)boronic acid hydrochloride is an analytical reagent that is used in the cross-coupling reaction between aryl bromides and organoboron compounds. It has been synthesized from 2-aminophenylboronic acid, which can be produced by the alkylation of phenol with 3-bromoquinoline. This compound has been shown to have antimalarial activity against the human malaria parasite Plasmodium falciparum in vitro. (2-Aminophenyl)boronic acid hydrochloride has also been shown to have a high intestinal absorption rate when given orally to rats. In vivo studies are needed to determine whether this chemical is safe for humans.</p>

<p>N-Boc-pyrroyl-boronic acid is a linker that is used in organic synthesis. It reacts with chloride to form an organochlorine compound, which can be used as an inhibitor of s. aureus or other bacteria. The reaction time for this chemical is shorter than for the corresponding boronic acid, and it does not require the presence of a Lewis acid. This chemical has been shown to have anticancer activity in vitro, and its optimization has been studied using fluorescent carbonyl groups as the active component.</p>

<p>3,5-Dibromophenylboronic acid is a boronic acid with the chemical formula B(OH)Br. The boron atom in this molecule has a unique electron configuration that allows it to form strong bonds with other atoms and molecules. This reactive compound can be used as a ligand in cross-coupling reactions or to modify an organic molecule by coupling it to another molecule. 3,5-Dibromophenylboronic acid is typically used as a precursor for the synthesis of nanomaterials and can be synthesized from monomers at temperatures ranging from -78°C to 80°C.</p>

<p>Please enquire for more information about 2-Methylpyridine-4-boronic acid pinacol ester including the price, delivery time and more detailed product information at the technical inquiry form on this page</p>

<p>Tris(trimethylsilyl)silane is a reactive functional group that is used in the synthesis of monoclonal antibodies. It reacts with halides to form an intermediate, which then undergoes chain reactions with other molecules to form the final product. Tris(trimethylsilyl)silane can be used for cancer therapy and for the detection of antibodies. It has been shown that tris(trimethylsilyl)silane will react with a light emitting compound (e.g., 4-dimethylaminopyridine) and a cationic polymerization initiator (e.g., diallyldimethylammonium chloride). This reaction produces high values of light emission, which can be detected by x-ray crystal structures.</p>

<p>This compound is a drug target that is an organic molecule found in many pharmaceuticals. It is an acidic, ammonium persulfate-sensitive biomolecule, which can be introduced into cells and tissues to study their function. This compound has been shown to have cancer-fighting abilities, and has potent inhibitory activity against microbial infections. The compound also has suzuki coupling properties, which are used to introduce hemicyanine groups onto other molecules.</p>

<p>(E)-2-(1-Butenyl)-1,3,2-benzodioxaborole is a novel glycogen synthase inhibitor that has been shown to be effective in diabetic animal models. It was found to inhibit the activity of glycogen phosphorylase and increase the level of glycogen in the liver. (E)-2-(1-Butenyl)-1,3,2-benzodioxaborole has been optimized by replacing one or more of its moieties with anthranilimide groups. This replacement increases potency by 2 orders of magnitude with nanomolar potency. (E)-2-(1-Butenyl)-1,3,2-benzodioxaborole inhibits xanthine oxidase and xanthine dehydrogenase enzymes and prevents the formation of uric acid from xanthine during purine metabolism. It also inhibits glycolysis and glucose production through inhibition of phosphofructokinase 1.</p>

<p>N-Methyl-N-trimethylsilylacetamide is a bifunctional amide that can react with an electrophile, such as hexane, to form an N-methylated product. The amide group of the molecule can also be deprotonated by a strong base to form an enolate, which can then react with a nucleophile. The NMR spectra of this compound show that it has a multinuclear structure and contains two tautomers. It is used in analytical chemistry for sample preparation, chromatographic science for reaction intermediates, and chemical study for its reactivity.</p>

<p>Potassium tris(3,5-dimethyl-1-pyrazolyl)borohydride is a catalytic reagent that converts various ketones to their corresponding cyclic 3,5-dimethylpyrazoles. It has been used for the synthesis of 1,4-dihydropyridines and for the conversion of aliphatic nitro compounds to their corresponding anilines. The yields are high and it has been shown to be more efficient than other methods in the literature. This reagent also has an intramolecular reaction mechanism and is able to reduce chloride ions into chloride gas.</p>

<p>N-epsilon-acetyl-L-lysine is a diagnostic agent that is used to identify cancer cells. This compound is synthesized by the enzyme polymerase chain reaction (PCR) and is a fluorescent probe that selectively binds to lysine residues in proteins of the cell membrane, including glycoproteins and proteoglycans. The presence of this compound can be detected using spectroscopy. It has been shown that higher levels of N-epsilon-acetyl-L-lysine in urine are associated with an increased body mass index and fatty acid content.</p>