PMID- 16152661 OWN - NLM STAT- MEDLINE DCOM- 20060126 LR - 20131121 IS - 0173-0835 (Print) IS - 0173-0835 (Linking) VI - 26 IP - 20 DP - 2005 Oct TI - Comparison of the use of aqueous and nonaqueous buffers in association with cyclodextrin for the chiral separation of 3,4-methylenedioxymethamphetamine and related compounds. PG - 3904-9 AB - A comparison of the use of aqueous and nonaqueous buffers in association with beta-CD for the chiral separation of (R)- and (S)-3,4-methylenedioxymethamphetamine and related compounds is described. The (R)- and (S)-isomers of 3,4-methylenedioxymethamphetamine (MDMA) and its major metabolite 3,4-methylenedioxyamphetamine (MDA) were prepared. Under aqueous and nonaqueous buffer conditions and based on the CZE and MEKC modes, the order of migration of (R)-MDA, (S)-MDA, (R)-MDMA, and the (S)-MDMA enantioisomers were determined. Several electrophoretic parameters, including the concentration of beta-CD (aqueous, 25-60 mM; nonaqueous, 20-150 mM) used in the electrophoretic separation and the amount of organic solvents required for the separation, were optimized. FAU - Huang, Yu-San AU - Huang YS AD - Department of Chemistry, National Taiwan Normal University, Taipei, Taiwan. FAU - Tsai, Chung-Chen AU - Tsai CC FAU - Liu, Ju-Tsung AU - Liu JT FAU - Lin, Cheng-Huang AU - Lin CH LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Germany TA - Electrophoresis JT - Electrophoresis JID - 8204476 RN - 0 (Buffers) RN - 0 (Solvents) RN - 0 (beta-Cyclodextrins) RN - 4764-17-4 (3,4-Methylenedioxyamphetamine) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) SB - IM MH - 3,4-Methylenedioxyamphetamine/analogs & derivatives/isolation & purification MH - *Buffers MH - Chromatography, Micellar Electrokinetic Capillary/methods MH - Electrophoresis, Capillary/*methods MH - N-Methyl-3,4-methylenedioxyamphetamine/analogs & derivatives/*isolation & purification MH - Solvents MH - Stereoisomerism MH - beta-Cyclodextrins EDAT- 2005/09/10 09:00 MHDA- 2006/01/27 09:00 CRDT- 2005/09/10 09:00 PHST- 2005/09/10 09:00 [pubmed] PHST- 2006/01/27 09:00 [medline] PHST- 2005/09/10 09:00 [entrez] AID - 10.1002/elps.200410374 [doi] PST - ppublish SO - Electrophoresis. 2005 Oct;26(20):3904-9. doi: 10.1002/elps.200410374.