| Cinnarizine Process Impurity 1 | 1522375-83-2 | Ax-IMP1246 |
| Cinnarizine Impurity B | 750512-44-8 | Ax-IMP1245 |
| Cinnarizine Impurity A | 841-77-0 | Ax-IMP1244 |
| Cinnarizine Working Standard | 298-57-7 | Ax-IMP1243 |
| Ranitidine EP Impurity F | 81074-81-9 (HCl form) ; 15433-79-1 (base) | Ax-IMP1183 |
| Ranitidine EP Impurity H | 72078-82-1 | Ax-IMP1184 |
| Ranitidine EP Impurity G | 112233-23-5 | Ax-IMP1185 |
| 2-((2,4-dimethylphenyl)amino)benzoic acid | 27210-58-8 | Ax-787 |
| 2-((3,4-dimethylphenyl)amino)benzoic acid | 39492-53-0 | Ax-789 |
| Ranitidine Dimer | 72126-78-4 | Ax-IMP1182 |