| 1-(4-(ethylmethylamino)-2-butynyl)-5-methyl-2-pyrrolidinon ethanedioate (2: |
| 3) |
| 1-(4-(ethylmethylamino)-2-butynyl)-5-methyl-2-pyrrolidinone ethanedioate (2:3 |
| n-(4-(ethylmethylamino)-2-butynyl)-5-methyl-2-pyrrolidone sesquioxalate |
| 1-(4-(ethylmethylamino)-2-butynyl)-5-methyl-2-pyrrolidinon ethanedioate (2:3) |
