103 Results for: "lichropur"

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di-Potassium hydrogen phosphate, anhydrous, LiChropur™ for HPLC, Supelco®

Supplier: Merck

, anhydrous, LiChropur™ for HPLC, Supelco®

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(S)-2-((5-Fluoro-2,4-dinitrophenyl)amino)propanamide ≥99.0%, LiChropur™ for chiral derivatisation, Supelco®

Supplier: Merck

Nα-(2,4-Dinitro-5-fluorophenyl)-L-alaninamide (FDAA) is a chiral derivatizing agent (CDA), has high enantioselectivity but low sensitivity as compared to other CDAs. It is generally used to assign the stereochemistry of amino acids in trace amounts.

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di-Potassium hydrogen phosphate 99.0-101.0% (by titrimetric analysis), LiChropur™ suitable for HPLC, Supelco®

Supplier: Merck

di-Potassium hydrogen phosphate 99.0-101.0% (by titrimetric analysis), LiChropur™ suitable for HPLC, Supelco®

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N,N-Dimethylglycine ≥99% (by total nitrogen and titration analysis), LiChropur™ derivatisation reagent, for HPLC, for LC-MS, Supelco®

Supplier: Merck

N,N-Dimethylglycine is a type of quaternary ammonium compound which exhibits a variety of biological effects.

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1,1,1,3,3,3-Hexamethyldisilazane : Chlorotrimethylsilane (HMDS + TMCS) solution (10 vol parts) in pyridine , Silylating mixture I according to Sweeley, LiChropur™ for GC derivatisation, Supelco®

Supplier: Merck

Hexamethyldisilazane/chlorotrimethylsilane/pyridine = 2:1:10 (v/v/v), useful silylating mixture for the silylation of hydroxy-compounds.

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(-)-ɑ-Methoxy-ɑ-(trifluoromethyl)phenylacetyl chloride ≥99.0%, LiChropur™ for chiral derivatisation, Supelco®

Supplier: Merck

(R)-(-)-a-Methoxy-a-(trifluoromethyl)phenylacetyl chloride (Mosher’s acid chloride) is generally used as a chiral derivatizing agent.

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Disodium hydrogen phosphate dihydrate ≥99.0% (by acidimetry), LiChropur™ buffer substance, for chromatography, Supelco®

Supplier: Merck

Disodium hydrogen phosphate dihydrate ≥99.0% (by acidimetry), LiChropur™ buffer substance, for chromatography, Supelco®

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N-Methyl-N-trimethylsilylheptafluorobutyramide (MSHFBA) ≥90% (by GC), LiChropur™ for GC derivatisation, Supelco®

Supplier: Merck

N-methyl-N-trimethylsilylheptafluorobutyramide (MSHFBA) has been used in the silylation reaction during GC analysis of samples containing 1-monoolein, 2-monoolein, 1,2-diolein, 1,3-diolein, ethyl oleate, oleic acid and triolein.

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7-Fluorobenzo-2-oxa-13-diazole-4-sulphonic acid ammonium salt ≥98.5% (by HPLC), LiChropur™ derivatisation reagent, for HPLC, Supelco®

Supplier: Merck

Fluorescent probe for thiols and pre-column labeling of biological thiols for HPLC

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Hydrochloric acid solution 3 M in methanol, LiChropur™ for GC derivatisation, Supelco®

Supplier: Merck

Methanolic HCl (hydrogen chloride in methanol) is particularly useful for preparing methyl esters of volatile (short chain) fatty acids. Fatty acids are esterified by heating them with an anhydrous alcohol in the presence of an acidic catalyst in a sealed vessel at a high temperature for a short time. In the reaction, a fatty acid molecule and an alcohol molecule are joined, with the release of a water molecule. The derivatives can be quickly and easily recovered, quantitatively, from the reaction medium.