Research Article

Structure Identification and Risk Assurance of Unknown Impurities in Pramipexole Oral Drug Formulation

Figure 5

Proposed structure of unknown impurities in pramipexole oral drug formulation. (a) Imp 2 (m/z 374) and its fragmentation scheme and (b) Imp 3 (m/z 344) and its fragmentation scheme.
(a)
(b)