Fig. 4From: Improved GMP-compliant multi-dose production and quality control of 6-[18F]fluoro-L-DOPA a Mass spectra of low specific activity FDOPA sample. No 6-hydroxy-DOPA was found in the sample (above). Peak of FDOPA-quinone (middle) was detected and the total ion current chromatogram is presented below. b Proposed FDOPA- quinone fragmentsBack to article page