David J. Skanchy, PhD, is a review chemist with the US Food and Drug Administration, 7500 Standish Pl., Rockville, MD 20855, tel. 240.276.8552, fax 240.276.8582.
Appendix: Common Deficiencies Related to Solution NMR in the Type-II DMFs
Appendix to Characterization of Small-Molecule Drug Substances in Type II DMFs Supporting ANDAs, Part I: Solution Nuclear Magnetic Resonance Spectroscopy
Regulatory Considerations for Controlling Intermediates in Type-II Drug Master Files for the Manufacture of Generic Drug Substances
The authors present analysis of the state of control of intermediate identity and quality, based on analysis of recently submitted DMFs.