| 40˚C /75%RH Stability Summary | ||||
| Condition | Ritalinic acid | Erythro isomer | Ester-1 (RRT 0.75) | Ester-2 (RRT 0.77) |
| Initial | 0.00 | 0.00 | 0.00 | 0.01 |
| 1 Month | 0.40 | 0.00 | 0.055 | 0.06 |
| 2 Months | 0.797 | 0.092 | 0.106 | 0.118 |
| 3 Months | 1.301 | 0.136 | 0.164 | 0.162 |
| 25˚C/60%RH Stability Summary | ||||
| Initial | 0.00 | 0.00 | 0.00 | 0.00 |
| 3 Months | 0.277 | 0.00 | 0.00 | 0.00 |
| 6 Months | 0.562 | 0.00 | 0.101 | 0.081 |
| 9 Months | 0.768 | 0.098 | 0.142 | 0.087 |
| 12 Months | 1.102 | 0.112 | 0.168 | 0.16 |
| 18 Months | 1.444 | 0.125 | 0.241 | 0.198 |
| 24 Months | 2.061 | 0.172 | 0.348 | 0.318 |