Research Article
Development and Validation of Stability-Indicating RP-UPLC Method for the Determination of Methdilazine in Bulk Drug and in Pharmaceutical Dosage Form
Table 2
Summary of stationary phase optimization.
| Stationary phase | Dimension | Observations/remarks |
| Acquity BEH Phenyl | (100 × 2.1) mm, 2 μm | Peak eluted very early with higher tailing | Acquity BEH C8 | (50 × 2.1) mm, 1.7 μm | No retention of MDH, eluted very early | Eclipse Plus C18, RRHD | (50 × 2.1) mm, 1.8 μm | Peak fronting observed | Acquity BEH C8 | (100 × 2.1) mm, 1.7 μm | Peak eluted before 1 min | Acquity BEH C18 | (100 × 2.1) mm, 1.7 μm | Satisfactory peak shape observed |
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