1. FDA's policy statement for the development of new stereo isomeric drugs, 5/1/1992 http://www.fda.gov./cder/guidance/stereo.htm.
2. Note for guidance on impurities testing: impurities in new drug substances, EMEA, London, 21 February 2002.
3. ICH Harmonised Tripartite Guideline, Test Procedures and Acceptance Criteria for New Drug Substances and New Drug Products: Chemical Substances (http://www.ich.org/LOB/media/MEDIA430.pdf).
4. Enantioselective chromatography as a powerful alternative for the preparation of drug enantiomers
5. Pharmaceutical development and specification of stereoisomers