title: Conventional Chiralpak ID vs. capillary Chiralpak ID-3 amylose tris-(3-chlorophenylcarbamate)-based chiral stationary phase columns for the enantioselective HPLC separation of pharmaceutical racemates.
abstract: A comparative enantioselective analysis using immobilized amylose tris-(3-chlorophenylcarbamate) as chiral stationary phase in conventional high-performance liquid chromatography (HPLC) with Chiralpak ID (4.6 mm ID × 250 mm, 5 µm silica gel) and micro-HPLC with Chiralpak ID-3 (0.30 mm ID × 150 mm, 3 µm silica gel) was conducted. Pharmaceutical racemates of 12 pharmacological classes, namely, α- and β-blockers, anti-inflammatory drugs, antifungal drugs, dopamine antagonists, norepinephrine-dopamine reuptake inhibitors, catecholamines, sedative hypnotics, diuretics, antihistaminics, anticancer drugs, and antiarrhythmic drugs were screened under normal phase conditions. The effect of an organic modifier on the analyte retentions and enantiomer recognition was investigated. Baseline separation was achieved for 1-acenaphthenol, carprofen, celiprolol, cizolirtine carbinol, miconazole, tebuconazole, 4-hydroxy-3-methoxymandelic acid, 1-indanol, 1-(2-chlorophenyl)ethanol, 1-phenyl-2-propanol, flavanone, 6-hydroxyflavanone, 4-bromogluthethimide, and pentobarbital on the 4.6 mm ID packed with a 5 µm silica column using conventional HPLC. Nonetheless, baseline separation was achieved for aminoglutethimide, naftopidil, and thalidomide on the 0.3 mm ID packed with a 3 µm silica capillary column.
authors.affiliation: Chirality Program, Biomedical Science, University of Canberra, Australian Capital Territory (ACT), Canberra, Australia.
authors.forename: Marwa
authors.initials: M
authors.lastname: Ahmed
authors.forename: Marina
authors.initials: M
authors.lastname: Gwairgi
authors.forename: Ashraf
authors.initials: A
authors.lastname: Ghanem
mesh_terms: D000688:Amylose / Q000031:analogs & derivatives / Q000737:chemistry; D002219:Carbamates / Q000737:chemistry; D002851:Chromatography, High Pressure Liquid / Q000295:instrumentation / Q000379:methods*; D004800:Enzymes, Immobilized; D004364:Pharmaceutical Preparations / Q000032:analysis / Q000302:isolation & purification*; D013237:Stereoisomerism
chemical_list: D002219:Carbamates; D004800:Enzymes, Immobilized; D004364:Pharmaceutical Preparations; D000688:Amylose
keywords: Chiralpak ID-3; amylose tris-(3-chlorophenylcarbamate); chiral separations; micro-HPLC; normal phase chromatography