 | C4X-181310 | 857538-11-5 | Impurity | |
| Butylphthalide Impurity 10 |
| C4X-181311 | 111943-62-5 | Impurity | |
| Butylphthalide Impurity 11 |
| C4X-181312 | 2360-45-4 | Impurity | |
| Butylphthalide Impurity 12 |
| C4X-181314 | 61658-90-0 | Impurity | |
| Butylphthalide Impurity 14 |
 | C4X-181315 | 3453-64-3 | Impurity | |
| Butylphthalide Impurity 15 |
 | C4X-181316 | 577-56-0 | Impurity | |
| Butylphthalide Impurity 16 |
| C4X-181317 | 691863-84-0 | Impurity | |
| Butylphthalide Impurity 17 |
| C4X-181318 | N/A | Impurity | |
| Butylphthalide Impurity 18 |
 | C4X-181319 | 17369-59-4 | Impurity | |
| Butylphthalide Impurity 19 |
 | C4X-18132 | 551-08-6 | Impurity | |
| Butylphthalide Impurity 2 |
