Separation of Benzylamine
Primesep A separates acids, bases, and neutrals in one injection. Maleic acid, benzonitrile, and benzylamine are baseline resolved by a combination of reversed-phase, ion-exchange, and ion-exclusion mechanisms. Excellent peak shape results with a mass spec compatible mobile phase of water, acetonitrile (MeCN, ACN) and trifluoracetic acid (TFA) with UV detection at 210 nm.
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Analytical chemists face multiple complex separations everyday. Very often, complex mixtures containing various compounds need to be analyzed in a single run. Traditional reversed-phase chromatography has challenges for retention of polar-neutral, polar-acidic and polar-basic compounds in mixtures with hydrophobic compounds. We have developed a universal screening method for analysis of complex mixtures containing polar-neutral, polarbasic, polar-acidic, hydrophobic-neutral and hydrophobic-basic compounds. The method employs Primesep 200 mixed-mode reversed-phase cation-exchange column and a simple mobile phase containing ACN/water/sulfuric acid. The low pH of the mobile phase helps suppress ionization of polar-acidic compounds, making them slightly hydrophobic. Hydrophobic and hydrophilic neutral compounds are retained by RP mechanism, while basic hydrophilic and basic hydrophobic compounds are retained by cation-exchange mechanism. Abbreviations: PN-polar neutral, PB-polar basic, PA-polar acidic, HN-hydrophobic neutral, HB-hydrophobic basic
Application Name : Universal HPLC-UV Method for Complex Mixtures
Column Name : Primesep 200 Columns
Analytes : Homovanillic acid, Amitriptyline, Uracil, Toluene, Benzoic acid, Benzylamine, DOPA (3,4-dihydroxy-L-phenylalanine), Phenol, 2,6-Lutidine, Epinephrine Sulfonate, Hydroxytryptophan, Tryptophan, 2,3-DHBA, Methylparaben, Ethylparaben