1. ICH Harmonised Tripartitie Guideline, Impurities in New Drug Substances, Q3A(R2), Current Step 4 version, dated 25 October 2006.
2. ICH Harmonised Tripartitie Guideline, Impurities in New Drug Products, Q3B(R2), Current Step 4 version, dated 2 June 2006.
3. VICH GL11 (#93) Guidance for Industry: Impurities in New Veterinary Medicinal Products, Revised at Step 9, dated September 2007.
4. LC/MS Applications in Drug Development;Lee,2002
5. Instrument dependence of electrospray ionization and tandem mass spectrometric fragmentation of the gingerols