| Linagliptin Nitrosamine Impurity 3 | NA | Ax-10415 |
| Linagliptin Nitrosamine Impurity 4 | NA | Ax-10416 |
| Linagliptin Nitrosamine Impurity 5 | NA | Ax-10417 |
| Apixaban Nitrosamine Impurity | NA | Ax-10418 |
| Apixaban Impurity 1 | 1421823-20-2 | Ax-10419 |
| ethyl (Z)-2-chloro-2-(2-(4-methoxyphenyl)-2-nitrosohydrazono)acetate | NA | Ax-10420 |
| 5-((4-nitrophenyl)(nitroso)amino)pentanoyl chloride | NA | Ax-10421 |
| 1-(2-((2,5-dimethylphenyl)thio)phenyl)piperazine | 508233-77-0 | Ax-10427 |
| 1-(2-((2,6-dimethylphenyl)thio)phenyl)piperazine | 508233-76-9 | Ax-10426 |
| methyl 2-acetyl-3-(3-nitrophenyl)-5-oxohexanoate | 2469555-30-2 | Ax-10424 |