Photosensitivity of Internal Standard Valerophenone Used in USP Ibuprofen Bulk Drug and Tablet Assay and Its Effect on the Quantitation of Ibuprofen and Its Impurities

August 2, 2004
Ranga Velagaleti, PhD

Ranga Velagaleti is the manager of laboratory and stability at BASF Corporation, 8800 Line Ave., Shreveport, LA 71106, tel. 318.861.8040, fax 318.861.8004,

Pharmaceutical Technology, Pharmaceutical Technology-08-02-2004, Volume 28, Issue 8

The results of forced degradation studies indicate the need for alternatives to valerophenone as an internal standard calibration for quantifying ibuprofen in bulk drug and tablet assay samples.