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The RSV stability during the long-term storage (5–8 months) at 2–5 °C and protected from light.
| Formula | Duration of Storage (month) | Physical Stability | Chemical Stability (%) | ||
|---|---|---|---|---|---|
| Clarity | Single Phase | Tendency of Darker Appearance | |||
| TKTP | 8 | transparent | ✓ | + | 98.73 ± 4.00 |
| ETKTP | 5 | transparent | ✓ | ++ | 89.25 ± 1.70 |
| E1K20TP | 6 | transparent | ✓ | ++ | 93.39 ± 8.17 |
| LKTP | 6 | transparent | ✓ | + | 107.02 ± 8.73 |
| EuKTP | 6 | transparent | ✓ | + | 108.41 ± 4.62 |
