Chemical Name: (6RS)-3-(aminomethylene)-6-(4-hydroxyphenyl)piperazine-2,5-dione (as per EP); 3-(Aminomethylene)-6-(4-hydroxyphenyl)piperazine-2,5-dione (as per USP)
Synonym: Cefprozil USP impurity b ; Hydroxyphenyldiketopiperazine
Identification, isolation, and characterization of unknown degradation products of cefprozil monohydrate by high-performance thin-layer chromatography
Vandana Gawande* and Kailash Bothara
Journal of Planar Chromatography 27 (2014) 5, 372–376
Spectrophotometric Methods for the Determination of Cefprozil in Bulk and Dosage Form
Elrasheed A. Gadkariem,1 Mohammed M. Mutasim,1 Kamal E. E. Ibrahim,1 and Humeida A. El-Obeid2
Int J Biomed Sci. 2009 Sep; 5(3): 267–274.