Metamizole Sodium-impurities | Pharmaffiliates

metamizole sodium and its Impurities

A sodium salt of non-opioid analgesic drug Metamizole which is used in human and veterinary medicine. It is a dipyrone which is a prodrug of structurally related pyrazolone compounds. Metamizole is used for perioperative pain, acute injury, colic, cancer pain. Reference standards of Metamizole Sodium API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.

Displaying 12 results for metamizole sodium Impurities
PA 13 24000

Metamizole Sodium - API Standards

Metamizole Sodium


  • Catalogue No.:PA 13 24000

  • CAS :

    68-89-3

  • Molecular Formula : C13H16N3NaO4S

  • Molecular Weight : 333.34

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PA 13 24010

Metamizole Sodium - Impurity A

4-Formylamino Antipyrine


  • Catalogue No.:PA 13 24010

  • CAS :

    1672-58-8

  • Molecular Formula : C12H13N3O2

  • Molecular Weight : 231.25

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PA 13 24020

Metamizole Sodium - Impurity B

4-Aminophenazone


  • Catalogue No.:PA 13 24020

  • CAS :

    83-07-8

  • Molecular Formula : C11H13N3O

  • Molecular Weight : 203.24

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PA 13 24030

Metamizole Sodium - Impurity C (Hydrochloride Salt)

4-Methylaminophenazone Hydrochloride


  • Catalogue No.:PA 13 24030

  • CAS :

    856307-27-2

  • Molecular Formula : C12H15N3OClH

  • Molecular Weight : 253.73

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PA 13 24031

Metamizole Sodium - Impurity C (Freebase)

4-Methylaminophenazone


  • Catalogue No.:PA 13 24031

  • CAS :

    519-98-2

  • Molecular Formula : C12H15N3O

  • Molecular Weight : 217.27

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PA 13 24040

Metamizole Sodium - Impurity D

4-Dimethylamino Antipyrine


  • Catalogue No.:PA 13 24040

  • CAS :

    58-15-1

  • Molecular Formula : C13H17N3O

  • Molecular Weight : 231.29

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PA 13 24050

Metamizole Sodium - Impurity E

4-N-Desmethylmetamizole


  • Catalogue No.:PA 13 24050

  • CAS :

    117-38-4

  • Molecular Formula : C12H15N3O4S

  • Molecular Weight : 297.33

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PA 13 24032

Metamizole Sodium - Impurity C (Hydrate Salt)

4-Methylaminoantipyrine Monohydrate


  • Catalogue No.:PA 13 24032

  • CAS :

    1619981-09-7

  • Molecular Formula : C12H17N3O2

  • Molecular Weight : 235.29

PA 13 24540

Metamizole Sodium - Impurity E (Sodium Salt)

Melaminsulfone Sodium Salt


  • Catalogue No.:PA 13 24540

  • CAS :

    129-89-5

  • Molecular Formula : C12H14N3NaO4S

  • Molecular Weight : 318.31

PA 13 0241003

((1,5-Dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)azanediyl)dimethanesulfonic Acid

((1,5-Dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)azanediyl)dimethanesulfonic Acid


  • Catalogue No.:PA 13 0241003

  • CAS :

    NA

  • Molecular Formula : C13H17N3O7S2

  • Molecular Weight : 391.41

PA 13 0241004

4,4'-[Methylenebis(methylimino)]diantipyrine

4,4'-[Methylenebis(methylimino)]diantipyrine


  • Catalogue No.:PA 13 0241004

  • CAS :

    810-16-2

  • Molecular Formula : C25H30N6O2

  • Molecular Weight : 446.56

PA 13 0241005

Sodium ((1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)(nitroso)amino)methanesulfonate

Sodium ((1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)(nitroso)amino)methanesulfonate


  • Catalogue No.:PA 13 0241005

  • CAS :

    NA

  • Molecular Formula : C12H13N4NaO5S

  • Molecular Weight : 348.31