Chirasil-DEX CB
Definition
A cyclodextrin-based chiral gas chromatography column (Agilent) used for baseline resolution of d- and l-methamphetamine and d- and l-amphetamine enantiomers in forensic stimulant analysis.
- Type
- Cyclodextrin-based chiral GC column
- Manufacturer
- Agilent
- Resolves
- d- and l-methamphetamine, d- and l-amphetamine
- Use
- Forensic stimulant enantiomer analysis
Common questions
Why is enantiomer resolution of methamphetamine forensically significant?+
L-methamphetamine is the active ingredient in some legal nasal inhalers and has weak psychoactive effect, while d-methamphetamine is the illicit, strongly psychoactive form, so resolving which enantiomer or ratio is present can distinguish legitimate use from illicit manufacture.
What makes a cyclodextrin stationary phase able to separate enantiomers a standard GC column cannot?+
The cyclodextrin cavity forms transient inclusion complexes with the analyte, and because the two enantiomers fit into that chiral cavity with slightly different binding strength, they elute at different retention times even though they are identical in mass and boiling point.
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