Chemicals and DrugsAnalytical, Diagnostic and Therapeutic Techniques and EquipmentPhenomena and ProcessesInformation Science
Trifluoroacetic AcidFluoroacetatesSolventsAcetic AcidAcetic AnhydridesChromatography, High Pressure LiquidHydrochloric AcidChromatography, Reverse-PhaseSpectrometry, Mass, Electrospray IonizationSaltsSpectrophotometry, UltravioletMolecular StructureMass SpectrometryIndicators and ReagentsChromatography, LiquidCyanogen BromidePeptidesAmino AcidsChromophore-Assisted Light InactivationSpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationAmino Acid SequencePeptide FragmentsMolecular Sequence Data
GlacialCompoundsCarboxylicDiluteSolubleReagents500MLAcidicAminesIonsHydrochloricAcetoneGlutamic acidAcetonitrileBoricAqueousAnalyticalPurityPharmaceutically acceptableHydrogenAmino acidGradeTemperatureNitricAlcoholsChemicalCovalentAmountsMethylDerivativesSulfuricIntermediateWaterAnalysisOxygenPowderRoutineSolutionExamplesProductsTransferFormVolumeCategory
Glacial1
  • Many amides can be reduced to amines by triacetoxyborohydride formed in situ from sodium borohydride and glacial acetic acid. (thevespiary.org)
Compounds7
  • The hydrocarbon which is most advantageous is cyclohexane, the oxidation of which leads to-adipic acid, one of the base compounds of polyamide 6,6, but may also give cyclohexanone leading to caprolactam and thus to polyamide 6. (allindianpatents.com)
  • The catalytic system comprising manganese and/or cobalt, chromium and iron compounds makes it possible to prepare adipic acid directly with good selectivity and improved production efficiency, when the oxidation of cyclohexane is performed. (allindianpatents.com)
  • This group of compounds includes amino acids and fatty acids. (lookformedical.com)
  • The present invention relates to novel alkoxy propionic acid and their pharmaceutical accetable salts having use as antidiabetic,hypolipidemic,antiobesity and hypocholesterolemic compounds. (allindianpatents.com)
  • The invention also relates to a process for the preparation of above said novel compounds and phamaceutically acceptable salts. (allindianpatents.com)
  • The present invention relates to novel antidiabetic, hypolipidemic, antiobesity and hypocholesterolemic compounds of formula (I), their derivatives, their analogs, their tautomeric forms, their stereoisomers, their polymorphs, their pharmaceutically acceptable salts, their pharmaceutically acceptable solvates and pharmaceutically acceptable compositions containing them. (allindianpatents.com)
  • Our Titripur ® volumetric solutions and Titrisol ® concentrates offer a range of acids in different concentrations for quantifying compounds with the titration method. (sigmaaldrich.com)
Carboxylic6
  • The invention concerns a method for oxidising with oxygen or an oxygen-containing gas, hydrocarbons into corresponding carboxylic acids, alcohols and/or ketones or alcohols and/or ketones into corresponding carboxylic acids. (allindianpatents.com)
  • The present invention relates to the o.xidat±on with oxygen, or a gas containing it, of hydrocarbons to the corresponding carboxylic acids,-alcohols and/or ketones or of alcohols and/or ketones to the corresponding carboxylic acids. (allindianpatents.com)
  • Carboxylic acids. (lookformedical.com)
  • Carboxylic acids can be saturated, unsaturated, or aromatic. (lookformedical.com)
  • The stain A. fumigatus nHF-01 produced the maximum AMC (5-butyl-2-pyridine carboxylic acid) in 2% MEB (w/v) and 4% YE (w/v) at pH 6.0 and 20 °C temperature with 100 rpm agitation for ten days. (nature.com)
  • It had cytotoxicity against human lung carcinoma A549 cell line and was stable up to 100 °C. Thus, the study revealed that the strain A. fumigatus nHF-01 produces a potent broad-spectrum AMC 5-butyl-2-pyridine carboxylic acid that could be used against human food and topical pathogenic bacteria. (nature.com)
Dilute2
  • Small amounts of dilute (10%) aqueous acetic acid (for basic peptides) or aqueous ammonia (for acidic peptides) may help dissolution of these peptides. (shinepeptide.com)
  • Common aqueous acids include hydrochloric acid (a solution of hydrogen chloride which is found in gastric acid in the stomach and activates digestive enzymes ), acetic acid (vinegar is a dilute aqueous solution of this liquid), sulfuric acid (used in car batteries), and citric acid (found in citrus fruits). (alchetron.com)
Soluble3
  • American patent US-A-4 902 827, published in February 1990, describes an improvement to the air oxidation of cyclohexane to adipic acid, in a liquid phase comprising acetic acid, at a temperature of from 80°C to 160°C and in the presence of an oxidation catalyst comprising a soluble cobalt compound and a solublezirconium and/or hafnium compound. (allindianpatents.com)
  • It is a white crystalline powder which is practically insoluble in water but freely soluble solvents like methanol, dimethyl sulfoxide and dimethyl formamide, soluble in acetic acid, slightly soluble in acetone and Acetonitrile and very slightly soluble in Tetra Hydro furan and 1-octanol. (biomedres.info)
  • They are highly soluble in nonpolar solvents. (anon.co.kr)
Reagents1
  • Alkyl-, aryl-, and heteroaryllithium reagents add to azides to afford triazene salts. (wikipedia.org)
500ML1
  • 0.01 ( 1000 ppm ) 28 absolute alcohol 500 ml 29 ace control level 1 100 ml 30 acetamide agar 500 gm 31 acetic acid 500ml ( laboratory chemical ) only for industrial, institutional and research purposes, not for drug 32 acetic acid 2.5 ltrs 33 acetic acid 200 ml 34 acetic acid 250 ml 35 acetone 25 ml 36 acetone 5 l mol. (jharkhandtenders.net)
Acidic2
  • Reduction of these salts leads to amines, although they also may be converted to azides upon acidic workup with overall elimination of sulfinic acid. (wikipedia.org)
  • Chemicals or substances having the property of an acid are said to be acidic . (alchetron.com)
Amines1
  • Interestingly, although alcohols and amines can be Brønsted-Lowry acids, they can also function as Lewis bases due to the lone pairs of electrons on their oxygen and nitrogen atoms. (alchetron.com)
Ions4
  • After purification and final lyophilization, the white peptide powder will contain some counter ions, residual trace solvents, and moisture. (shinepeptide.com)
  • Hydronium ions are acids according to all three definitions. (alchetron.com)
  • An Arrhenius acid is a substance that, when added to water, increases the concentration of H + ions in the water. (alchetron.com)
  • Note that chemists often write H + ( aq ) and refer to the hydrogen ion when describing acid-base reactions but the free hydrogen nucleus, a proton, does not exist alone in water, it exists as the hydronium ion, H 3 O + . Thus, an Arrhenius acid can also be described as a substance that increases the concentration of hydronium ions when added to water. (alchetron.com)
Hydrochloric2
Acetone1
  • 58.08 gm / moldensity = 0.7845 gm / cm3melting point = 94.7°cboiling point = 50.05°csmell = fruity 37 acetone 500 ml 38 acetonitrile ( ico grade ) liquid 100 ml 39 acid based liquid neutralizer concentrate to be used with dosing pump.nos. (jharkhandtenders.net)
Glutamic acid2
Acetonitrile1
  • The method has been developed using Enable C 18G column (250 × 4.6 mm, 0.5 μm) and a mobile phase comprising of acetonitrile and 0.1% trifluoroacetic acid in water at the ratio of 40:60%v/v with a flow rate of 0.8 mL/min. (biomedres.info)
Boric2
  • Boric acid puriss. (kingscientific.co.uk)
  • Strong acids and some concentrated weak acids are corrosive , but there are exceptions such as carboranes and boric acid . (alchetron.com)
Aqueous6
  • In the special case of aqueous solutions , proton donors form the hydronium ion H 3 O + and are known as Arrhenius acids. (alchetron.com)
  • Brønsted and Lowry generalized the Arrhenius theory to include non-aqueous solvents . (alchetron.com)
  • Aqueous Arrhenius acids have characteristic properties which provide a practical description of an acid. (alchetron.com)
  • Acids form aqueous solutions with a sour taste, can turn blue litmus red, and react with bases and certain metals (like calcium ) to form salts. (alchetron.com)
  • An aqueous solution of an acid has a pH less than 7 and is colloquially also referred to as 'acid' (as in 'dissolved in acid'), while the strict definition refers only to the solute. (alchetron.com)
  • Most acids encountered in everyday life are aqueous solutions, or can be dissolved in water, so the Arrhenius and Brønsted-Lowry definitions are the most relevant. (alchetron.com)
Analytical1
  • Neutralization curves in acid base analytical titrations, indicators. (slideshare.net)
Purity4
  • We offer a comprehensive range of LiChropur ® high purity acids for HPLC and LC-MS analysis to minimize background noise and signal suppression. (sigmaaldrich.com)
  • Our range of Suprapur ® and Ultrapur ® products are designed to accommodate your need to buy high purity acids for inorganic trace and ultratrace analysis. (sigmaaldrich.com)
  • We offer tailored range of high purity acids to satisfy the demand for sensitive instrumental techniques (ICP-OES, ICP-MS, AAS, etc. (sigmaaldrich.com)
  • 99.75 % ) 13 2 propanol ip: 45 g / isopropanol, 1 propanol: 30 g / n propanol ethyl hexadecyl dimethyl ammonium ethylsulphate: 0.2 g emollient and moisturiser with skin protecting substances 500 ml bott with dispenser passes en 13727, en13624, en14476, en1500, en12791 standards, pack size: 500 ml bottle 14 4 methylumbelliferone ( 100gm ) ( purity ( hplc ) =98 %, mol. (jharkhandtenders.net)
Pharmaceutically acceptable1
  • or a pharmaceutically acceptable salt thereof. (justia.com)
Hydrogen2
  • An acid is a molecule or ion capable of donating a hydron ( proton or hydrogen ion H + ), or, alternatively, capable of forming a covalent bond with an electron pair (a Lewis acid). (alchetron.com)
  • However, hydrogen chloride , acetic acid, and most other Brønsted-Lowry acids cannot form a covalent bond with an electron pair and are therefore not Lewis acids. (alchetron.com)
Amino acid1
  • The peptide content can be determined by amino acid or nitrogen analysis for each lot of material. (shinepeptide.com)
Grade2
  • EMSURE ® acids for analysis are our premium grade for all regulated and highly demanding lab applications. (sigmaaldrich.com)
  • Additionally, our EMPLURA ® grade of acids covers the most important specification parameters and is suitable for preparative lab work, cleaning and production. (sigmaaldrich.com)
Temperature1
  • Thus, American patent US-A-2 223 4 93, published in December 1940, describes the oxidation of cyclic hydrocarbons to the corresponding diacids, in a liquid phase generally comprising acetic acid, at a temperature of at least 60°C, using a gas containing oxygen and in the presence of an oxidation catalyst such as a cobalt compound. (allindianpatents.com)
Nitric2
  • The reason for this is that there would be obvious advantages in avoiding the use of an oxidizing agent such as nitric acid, used in one of the steps of the current industrial processes, which would spare the need to process the nitrogen oxides generated. (allindianpatents.com)
  • Nitric acid puriss. (kingscientific.co.uk)
Alcohols1
  • The present process may also be used for the oxidation of the intermediate alcohols or ketones, in particular cycloalkanols and cyclohexanones containing from 5 to 12 carbon atoms, to prepare the corresponding dicarboxylic acids. (allindianpatents.com)
Chemical3
  • Azilsartan Medoxomil ( Figure 1 ) is an Angiotensin II receptor antagonist which has the chemical name (5-Methyl-2-oxo-1,3- dioxol-4-yl) methyl 2-ethoxy-1-{ [2'-(5-oxo-4,5-dihydro 1,2,4- oxadiazol-3-yl) biphenyl-4-yl] methyl}-1H-benzimidazole-7- carboxylate monopotassium salt. (biomedres.info)
  • Lewis considered this as a generalization of the Brønsted definition, so that an acid is a chemical species that accepts electron pairs either directly or by releasing protons (H + ) into the solution, which then accept electron pairs. (alchetron.com)
  • Modern definitions are concerned with the fundamental chemical reactions common to all acids. (alchetron.com)
Covalent1
  • The second category of acids are Lewis acids , which form a covalent bond with an electron pair. (alchetron.com)
Amounts1
Methyl1
  • 15.E E. (Z)-2-tert-Butoxycarbonylamino-3-(4-carbamoyl-2,6-dimethyl-phenyl)acrylic acid methyl ester. (ambeed.com)
Derivatives1
  • The invention is concerned with novel biaryl derivatives of formula (I), wherein m, R1, R2, R3, X1, X2 and X3 are as defined in the description and in the claims, as well as physiologically acceptable salts thereof. (justia.com)
Sulfuric1
Intermediate2
  • A significant side reaction that occurs under these conditions is the diazo transfer reaction: instead of fragmenting into an azide and sulfinic acid, the intermediate triazene salt may break down to a diazo compound and sulfonamide. (wikipedia.org)
  • Among these hydrocarbons, the cycloalkanes, in particular those which have a ring containing from 5 to 12 carbon atoms, are definitely the most important, since their oxidation leads to dicarboxylic acids or to the intermediate cycloalkanols and cycloalkanones. (allindianpatents.com)
Water1
  • Most of the mechanisms described in literature are based on co-initiation by impurities, including water or lactic acid. (anon.co.kr)
Analysis3
  • Most EMSURE ® acids for analysis meet or exceed the requirements of ACS, ISO and/or Reag. (sigmaaldrich.com)
  • If you need less performance, but still top-notch quality and reliability, our acids for analysis EMPARTA ® are for you. (sigmaaldrich.com)
  • With our acids for analysis, you benefit from application-oriented quality, more flexibility and safety, and an excellent cost-performance ratio. (sigmaaldrich.com)
Oxygen1
  • More recently, it has been recommended in patent EP-A-0 694 333 to use, in the context of the oxidation of hydrocarbons with oxygen, a catalyst comprising a cobalt salt and a ferric salt. (allindianpatents.com)
Powder1
  • 40 acid fuchsin 1% 100 ml 41 acid fuchsin 1% 125 ml 42 acid fuchsin solid ( powder ) 25 gm 43 acid glycoprotein 100 gm 44 acid orthophoaphoric 500 ml 45 acid phosphatase 10x2ml 46 acp 100 ml 47 acrylic cold curve liquid 500 ml 48 acrylic cold curve powder 250 gm 49 acrylic colours 500mla. (jharkhandtenders.net)
Routine1
  • ZEOchem offers a broad range of NMR solvents and deuterium labeled products for routine analytics and research & development. (rototec-spintec.com)
Solution3
  • Note: The buffer should be added only after the peptide is completely in solution form, because salts may cause aggregation and create further solubility problems. (shinepeptide.com)
  • TFA salt, the residual traces of TFA can cause the pH of your solution to drop below 7. (shinepeptide.com)
  • For example, to make a 1mg/ml solution of peptide with a content of 80%, you would use 800ul of solvent instead of 1000ul. (shinepeptide.com)
Examples2
  • As these examples show, acids (in the colloquial sense) can be solutions or pure substances, and can be derived from acids (in the strict sense) that are solids, liquids, or gases. (alchetron.com)
  • Examples include molecular substances such as HCl and acetic acid. (alchetron.com)
Products1
  • Solvent and the enolate counterion also influence the observed ratio of diazo to azide products. (wikipedia.org)
Transfer2
  • In general, for reactions of enolates substituted with Evans oxazolidinones, trifluoroacetic acid promotes diazo transfer while acetic acid encourages azidation (the reasons for this are unclear). (wikipedia.org)
  • unless otherwise specified, acid-base reactions are assumed to involve the transfer of a proton (H + ) from an acid to a base. (alchetron.com)
Form2
  • If a TFA buffer was used during the final purification, for example, it can form a salt with amino groups on the side chains of lysine and arginine residues or on the amino terminus of the peptide. (shinepeptide.com)
  • Twenty alpha-amino acids are the subunits which are polymerized to form proteins. (lookformedical.com)
Volume1
  • To ensure consistent peptide concentrations, please always substract the nonpeptide weight when determining what volume of solvent to dissolve your peptide. (shinepeptide.com)
Category1
  • The first category of acids is the proton donors or Brønsted acids. (alchetron.com)