No. of assay | Content (%) of Tetracycline HCl in commercial form and API | |||||
---|---|---|---|---|---|---|
TTC HCl API | Brassica eye ointment | Galentic eye ointment | TTC HCl USP | Galentic skin ointment | Aurocycline skin ointment | |
For HPTLC | Â | Â | Â | Â | Â | Â |
 1 | 110.07 | 105.64 | 94.95 | 92.60 | 102.80 | 92.37 |
 2 | 109.81 | 104.07 | 97.03 | 92.43 | 104.54 | 92.81 |
 3 | 105.11 | 103.03 | 97.81 | 89.73 | 103.89 | 93.90 |
 Average amount(%) | 108.33 | 104.25 | 96.60 | 91.59 | 103.74 | 93.03 |
 SD | 2.28 | 1.31 | 1.48 | 1.61 | 0.88 | 0.78 |
 %RSD | 2.10 | 1.26 | 1.53 | 1.76 | 0.85 | 0.84 |
 Mean ± SD | 108.3 ± 2.28 | 104.5 ± 1.31 | 96.6 ± 1.48 | 91.59 ± 1.61 | 103.74 ± 0.88 | 93.03 ± 0.84 |
For HPLC | ||||||
 1 | 98.58 | 102.46 | 96.30 | 90.92 | 100.42 | 92.47 |
 2 | 98.61 | 102.42 | 96.31 | 91.32 | 100.26 | 92.45 |
 3 | 98.78 | 103.68 | 96.24 | 90.23 | 100.62 | 90.01 |
 Average amount (%) | 98.66 | 102.85 | 96.28 | 90.83 | 100.43 | 91.64 |
 SD | 0.11 | 0.0.72 | 0.04 | 0.55 | 0.18 | 1.42 |
 %RSD | 0.11 | 0.70 | 0.04 | 0.60 | 0.18 | 1.54 |
 Mean ± %RSD | 98.66 ± 0.11 | 102.85 ± 0.72 | 96.28 ± 0.04 | 90.83 ± 0.55 | 100.43 ± 0.18 | 91.64 ± 1.42 |