| Ramelteon Process Impurity 1 | 227179-22-8 | Ax-15525 |
| (S)-6-((1,3-dihydroxypropan-2-yl)amino)-2-(6-azaspiro[2.5]octan-6-yl)-N-(3-(N-(1,1,1-trifluoropropan-2-yl)sulfamoyl)phenyl)nicotinamide | 2820400-40-4 | Ax-15616 |
| Ramelteon Acrylonitrile Impurity | 196597-79-2 | Ax-15524 |
| Ramelteon Amine Impurity | 196597-80-5 | Ax-15523 |
| Ramelteo Impurity A | 326793-94-6 | Ax-15522 |
| Ramelteon R-Isomer | 196597-27-0 | Ax-15521 |
| Recimic Ramelteon | 196597-17-8 | Ax-15520 |
| 1-(2,4-dichlorobenzyl)piperazine | 51619-56-8 | Ax-15519 |
| 1-((4-amino-2-propylpyrimidin-5-yl)methyl)-2-methylpyridin-1-ium bromide | NA | Ax-15518 |
| 1-((4-amino-2-propylpyrimidin-5-yl)methyl)-2-methylpyridin-1-ium chloride | 121-25-5 | Ax-15517 |