Unlike all other modes of spectroscopy that are used in Pharma companies – for example measurement of protein or DNA the most predominant one is Raman Spectroscopy.
The one technique that has been used predominantly in the Pharmaceutical companies is Raman spectroscopy. This is a relatively simple technique that is used to identify the specific compound since it is very specific for the chemical bond and can quickly identify the compound or API without complicated or expensive testing. Raman spectroscopy is a significant portion of the $30MM spectroscopy market. One interesting feature about Raman is that it is not affected by moisture content unlike infrared spectroscopy and hence makes it the perfect method to assay compounds in tablets as well as verify labeling and diagnose security issues.