Table 6.
Long term and real time stability studies by proposed method.
| Test (claimed content) | Interval | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Initial | 1st month | 2nd month | 3rd month | 4th month | 5th month | 6th month | Mean result | %RSD | |
| Studies at accelerated condition (40°C + 75% H) | |||||||||
| PC (10 mg/5 mL) | 99.68 | 100.76 | 99.96 | 99.45 | 98.26 | 98.43 | 98.25 | 99.255 | 0.979 |
| LTC (10 mg/5 mL) | 100.27 | 100.44 | 98.48 | 98.37 | 97.87 | 97.81 | 97.55 | 98.684 | 1.203 |
|
| |||||||||
| Stability studies at long term (30°C + 65% H) | |||||||||
| PC (10 mg/5 mL) | 99.68 | 100.55 | 100.85 | 100.94 | 99.83 | 99.79 | 99.47 | 100.15 | 0.603 |
| LTC (10 mg/5 mL) | 100.27 | 100.62 | 99.78 | 98.38 | 98.18 | 98.04 | 97.96 | 99.032 | 1.159 |