| Cefditoren P7 Impurity | NA | Ax-13221 |
| Cefditoren P3 Impurity | NA | Ax-13220 |
| Cefditoren P2 Impurity | 2254227-50-2 | Ax-13219 |
| carbamoyl-L-arginine | 15920-89-5 | Ax-13189 |
| 2-(4-hydroxyphenyl)-1,2-diphenylethan-1-one | 5543-98-6 | Ax-13188 |
| Clomiphene Impurity C | 5530-99-4 | Ax-13187 |
| Clomiphene tritylphenone analog | NA | Ax-13186 |
| (2S,3R)-3-(1,4,7,10-tetraazacyclododecan-1-yl)butane-1,2,4-triol hydrochloride | 198637-66-0 | Ax-13185 |
| 2,2',2''-(10-((2R,3S)-1,3,4-trihydroxybutan-2-yl)-1,4,7,10-tetraazacyclododecane-1,4,7-triyl)triacetic acid | 151852-61-8 | Ax-13184 |
| Calcobutrol | 151878-23-8 | Ax-13183 |