A highly sensitive and selective chiral LC-MS/MS method for d-alanine, d-aspartic acid and d-serine has been developed using the precolumn derivatization reagents, 6-aminoquinolyl- N-hydroxysuccinimidyl carbamate (AccQ-Tag) or p-N,N,N-trimethylammonioanilyl N'-hydroxysuccinimidyl carbamate iodide (TAHS). The thus N-tagged enantiomers of the derivatized amino acids were nicely separated within 20. min using the cinchona alkaloid-based zwittterionic ion-exchange type enantioselective column, Chiralpak ZWIX(+). The selected reaction monitoring was applied for detecting the target d-amino acids in biological matrices. By using the present chiral LC-MS/MS method, the three d-amino acids and their l-forms could be simultaneously determined in the range of 0.1-500. nmol/mL. Finally, the technique was successfully applied to rat plasma and tissue samples.
All Science Journal Classification (ASJC) codes
- Analytical Chemistry
- Pharmaceutical Science
- Drug Discovery
- Clinical Biochemistry