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MilliporeSigma

Phenazone impurity A

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European Pharmacopoeia (EP) Reference Standard

Synonym(s): 3-Methyl-1-phenyl-2-pyrazoline-5-one; 5-Methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one

Empirical Formula: C₁₀H₁₀N₂O

Formula Weight: 174.20

Linear Formula: C₁₀H₁₀N₂O

MDL Number: MFCD00003138

Boiling Point: 287 °C/265 mmHg(lit.)

Melting Point: 126-128 °C(lit.)

Beilstein Registry Number: 609575

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