![Roy figure 5-[41827930]-{585410}-746090-1416910145798.gif](https://cdn.sanity.io/images/0vv8moc6/spectroscopy/5e8a7a8b42be4c1287e42a9e19c61a898804cfe5-700x592.gif?w=350&fit=crop&auto=format)
A discussion of active pharmaceutical ingredient (API) selection, drug product development, and mass spectrometry instrumentation
![Roy figure 5-[41827930]-{585410}-746090-1416910145798.gif](https://cdn.sanity.io/images/0vv8moc6/spectroscopy/5e8a7a8b42be4c1287e42a9e19c61a898804cfe5-700x592.gif?w=350&fit=crop&auto=format)
A discussion of active pharmaceutical ingredient (API) selection, drug product development, and mass spectrometry instrumentation
![Roy figure 5-[41827930]-{585410}-746090-1416910145798.gif](https://cdn.sanity.io/images/0vv8moc6/spectroscopy/5e8a7a8b42be4c1287e42a9e19c61a898804cfe5-700x592.gif?w=300&fit=crop&auto=format)
Published: October 1st 2011 | Updated: