Naphthalene-2,3-dicarbaldehyde derivatization of amino acids - an improved technique for minimization of benzoin condensation
| Authors | |
|---|---|
| Year of publication | 2013 |
| Type | Article in Periodical |
| Magazine / Source | Chemické listy |
| MU Faculty or unit | |
| Citation | |
| Field | Biochemistry |
| Keywords | capillary electrophoresis; LIF; Amino acids; |
| Description | Amino acids (AA) have no native fluorescence thus chemical modification (so called derivatization) of AA has to be performed prior the detection by a fluorescent detector. There is a lot of derivatization reagents commercially available differing in reactivity, excitation and emission wavelengths, quantum yield, product stability etc. Naphtalene-2,3-dicarbaldehyde (NDA) is a non-fluorescent reagent giving fluorescent product of primary amines. Derivatization procedure is quite simple, however has to be optimized to minimize undesired by-products of benzoin condensation. The by-products can exhibit fluorescence or form crystals which can clog capillary. The novel derivatization protocol using NDA for AA derivatization is subject of this contribution. |
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