Validated Stability Indicating RP-HPLC Method for Simultaneous Estimation of Codeine Phosphate and Chlorpheniramine Maleate from Their Combined Liquid Dosage Form

<table class="table-group" id="tab7"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td align="left">Sl. no</td><td align="center">Parameter</td><td align="center">Modification</td><td align="center">Retention time (min)</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td align="left" rowspan="2">1</td><td align="center" rowspan="2">Flow rate</td><td align="center">0.8 mL/min</td><td align="center">3.2, 9.13</td></tr><tr><td align="center">1.2 mL/min</td><td align="center">3.31, 9.32</td></tr><tr><td align="left" rowspan="2">2</td><td align="center" rowspan="2">pH</td><td align="center">2.8</td><td align="center">3.63, 9.7</td></tr><tr><td align="center">3.2</td><td align="center">3.3, 8.9</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Chromatography Research International

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Table 7

Table 7: Validated Stability Indicating RP-HPLC Method for Simultaneous Estimation of Codeine Phosphate and Chlorpheniramine Maleate from Their Combined Liquid Dosage Form 

Table 7 | Validated Stability Indicating RP-HPLC Method for Simultaneous Estimation of Codeine Phosphate and Chlorpheniramine Maleate from Their Combined Liquid Dosage Form 