| 4-(methylamino)-antipyrin |
| 1,2-dihydro-1,5-dimethyl-4-(methylamino)-2-phenyl-3h-pyrazol-3-on |
| 4-(methylamino)antipyrine |
| 4-methylaminophenazone |
| 4-monomethylaminoantipyrine |
| 4-monomethylaminophenazone |
| methylaminoantipyrine |
| methylaminophenazone |
| monomethylaminoantipyrine |
| n-methylaminoantipyrine |
| n-methylaminophenazone |
| n.a.p. |
| noramidopyrine |
| noraminopyrine |
| 1,5-dimethyl-4-methylamino-2-phenylpyrazolin- 3-one |
| 1,2-Dihydro-1,5-dimethyl-4-(methylamino)-2-phenyl-3H-pyrazol-3-one |