| Ubrogepant Intermediate 9 | NA | Ax-URG009 |
| Vigabatrin Impurity | 56-12-2 | Ax-IMP866 |
| Ubrogepant Intermediate 10 | NA | Ax-URG010 |
| Vigabatrin Related compound A | 7529-16-0 | Ax-IMP865 |
| Ubrogepant Intermediate 5 | 955379-18-7 | Ax-URG005 |
| Pregabalin Pyrandione Impurity | 185815-59-2 | Ax-IMP863 |
| Ubrogepant Intermediate 11 | 1375477-14-7 | Ax-URG011 |
| Pregabalin Methyl Ester | 714230-22-5 | Ax-IMP862 |
| Ubrogepant Intermediate 1 | 137628-17-2 | Ax-URG001 |
| Pregabalin Impurity B | 75143-89-4 | Ax-IMP861 |