| Impurity | Name | CAS | MF | MW |
| Agomelatine | N-[2-(7-methoxy-1-naphthyl)ethyl]acetamide | 138112-76-2 | C15H17NO2 | 243.305 |
| A | 1-Hydroxy-7-methoxy-1,2,3,4-tetrahydronaphthalene | 32820－10－3 | C11H14O2 | 178.231 |
| B | 1,2,3,4-tetrahydro-7-methoxynaphthalen-1-yl acetate | no | C13H16O3 | 220.268 |
| C | 3,4-dihydro-7-methoxynaphthalen-1-yl acetate | no | C13H18O3 | 222.268 |
| D | 7-methoxy-α-naphthol | 63247-13-6 | C11H10O2 | 174.199 |
| E | 1-acetoxy-7-methoxynaphthalene | no | C13H12O3 | 216.236 |
| F | 2-(7-methoxynaphthalen-1-yl)-N-(2-(7-methoxynaphthalen-1-yl)ethyl)acetimidamide | no | C26H26N2O2 | 398.5 |
| G | 2-(7-methoxynaphthalen-1-yl)-N-(2-(7-methoxynaphthalen-1-yl)ethyl)acetamide | no | C26H25NO3 | 399.48 |
| H | (7-methoxy-[1]naphthyl)-acetic acid amide
| 138113-07-2 | C13H13NO2 | 215.252 |
| I | bis(2-(7-methoxynaphthalen-1-yl)ethyl)amine | no | C26H27NO2 | 385.5 |
| J | N,N-bis(2-(7-methoxynaphthalen-1-yl)ethyl)acetamide | no | C28H29NO3 | 427.53 |
| K | N-(2-(7-hydroxynaphthalen-1-yl)ethyl)acetamide | no | C14H15NO2 | 229.27 |
| L | 8-(2-aminoethyl)naphthalen-2-ol | no | C12H13NO | 187.24 |
| M | 2-(7-methoxynaphthalen-1-yl)acetic acid | no | C13H12O3 | 216.23 |
| N | 1,3-bis(2-(7-methoxynaphthalen-1-yl)ethyl)urea | no | C27H28N2O3 | 428.52 |
