4-Acetamidoantipyrine 4-Acetaminoantipyrine 4-Acetoaminoantipyrine 4-Acetylaminoantipyrine 4-Acetylaminophenazone 83-15-8 Acetamide, N-(2,3-dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)- Acetamide, N-(antipyrinyl)- Acetamide, N-antipyrinyl- Acetamidoantipyrine Acetyl-4-aminoantipyrine Acetylaminoantipyrine Acetylated 4-aminoantipyrine Antipyrine, 4-acetamido- N-Acetyl-4-aminoantipyrine NSC331807