| Tofacitinib Nitroso Impurity 2 | NA | Ax-12118 |
| Tofacitinib Impurity 5 | 1527525-58-1 | Ax-12117 |
| Tofacitinib Nitroso Impurity 1 | NA | Ax-12116 |
| N-methyl-N-((3R,4R)-4-methylpiperidin-3-yl)-7-nitroso-7H-pyrrolo[2,3-d]pyrimidin-4-amine | NA | Ax-12115 |
| Nicergoline Impurity H | 192504-81-7 | Ax-12114 |
| Nicergoline Process Impurity 1 | 35121-60-9 | Ax-12113 |
| Nicergoline Impurity C | 35155-28-3 | Ax-12112 |
| Nicergoline Impurity B | 35264-46-1 | Ax-12111 |
| 5-chloropyridine-3-carbonyl chloride | 85320-79-2 | Ax-12110 |
| 9,10-dihydrolysergol | 18051-16-6 | Ax-12109 |