| Doxapram |
| Duoplan |
| Pyrrolidone |
| Pyrrolidone |
| 1-ethyl-4-(2-morpholinoethyl)-3,3-diphenyl-2-pyrrolidinon |
| 1-ethyl-4-( 2-morpholinoethyl)-3,3-diphenyl-2-pyrrolidinone |
| 1-ethyl-4-(2-(4-morpholinyl)ethyl)-3,3-diphenyl -2-pyrrolidinon |
| ahr 619 |
| dopram |
| dopram |
| doxapram |
