A RP-HPLC Method for the Analysis of Neostigmine Methylsulfate and Process-Related Impurities, Forced Degradation Studies, in the Injection Formulation
Table 1
Chemical structures of neostigmine methylsulfate and its EP reported impurities [19].
Impurity A (3-hydroxy-N, N, N-trimethylanilinium)
Impurity B (3-(dimethylamino)phenol)
Impurity C (3-(dimethylamino)phenyl dimethylcarbamate)
