ChemicalBook > CAS DataBase List > N-(2,3-dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)formamide

N-(2,3-dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)formamide

Product Name
N-(2,3-dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)formamide
CAS No.
1672-58-8
Chemical Name
N-(2,3-dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)formamide
Synonyms
NSC 60565;METAMIZOLE EP IMP A;carboxamidoantipyrine;4-ForMaMidoantipyrine;4-Formylaminoantipyrin;N-AntipyrinylforMaMide;N-(1,5-Dimethyl-3-oxo-2-;Metamizole EP Impurity A;Formamide, N-antipyrinyl-;Metamizole impurity A CRS
CBNumber
CB2876357
Molecular Formula
C12H13N3O2
Formula Weight
231.25
MOL File
1672-58-8.mol
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N-(2,3-dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)formamide Property

Melting point:
189-192?C
Boiling point:
400.1±55.0 °C(Predicted)
Density 
1.29±0.1 g/cm3 (20 ºC 760 Torr)
storage temp. 
Keep in dark place,Inert atmosphere,Store in freezer, under -20°C
solubility 
Chloroform (Slightly), DMSO (Slightly), Methanol (Slightly)
form 
solid
pka
12.72±0.20(Predicted)
BRN 
217665
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Safety

Hazard Codes 
Xn
Risk Statements 
20/22
WGK Germany 
3
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H302Harmful if swallowed

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
S349941
Product name
4-FORMYLAMINOANTIPYRINE
Purity
Aldrich<sup>CPR</sup>
Packaging
1 unit
Price
$216
Updated
2025/07/31
Sigma-Aldrich
Product number
PHR2783
Product name
Metamizole Impurity A
Purity
PharmaceuticalSecondaryStandard;CertifiedReferenceMaterial,certifiedrefer
Packaging
100MG
Price
$261
Updated
2025/07/31
Sigma-Aldrich
Product number
M0600905
Product name
Metamizole impurity A
Purity
European Pharmacopoeia (EP) Reference Standard
Packaging
15 mg
Price
$164
Updated
2025/07/31
Sigma-Aldrich
Product number
S349941
Product name
4-FORMYLAMINOANTIPYRINE
Purity
Aldrich
Packaging
250mg
Price
$209
Updated
2024/03/01
Sigma-Aldrich
Product number
M0600905
Product name
Metamizole impurity A
Purity
European Pharmacopoeia (EP) Reference Standard
Packaging
m0600905
Price
$153
Updated
2024/03/01
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N-(2,3-dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)formamide Chemical Properties,Usage,Production

Chemical Properties

Light Tan Solid

Uses

A metabolite of Dipyrone, a nonsteroidal anti-inflammatory drug.

Definition

ChEBI: A pyrazolone that is 1,2-dihydro-3H-pyrazol-3-one substituted by a formaylamino group at position 4, methyl groups at positions 1 and 5 and a phenyl group at position 2. It is a metabolite of aminophenazone.

N-(2,3-dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)formamide Preparation Products And Raw materials

Raw materials

4-Aminoantipyrine

Preparation Products

1,2-dihydro-1,5-dimethyl-4-(methylamino)-2-phenyl-3H-pyrazol-3-one AMMONIUM ALGINATE
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N-(2,3-dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)formamide Suppliers

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1672-58-8, N-(2,3-dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)formamideRelated Search:

4-ACETAMIDOANTIPYRINE AMINOPROPYLON 1,5-DIMETHYL-4-NICOTINAMIDO-2-PHENYL-3-PYRAZOLONE Antipyrine 1-(2,3-DIMETHYL-5-OXO-1-PHENYL(3-PYRAZOLIN-4-YL))-3-CHLOROPHENYLUREA N-(2,3-dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)formamide 2-CHLORO-N-(1,5-DIMETHYL-3-OXO-2-PHENYL-2,3-DIHYDRO-1H-PYRAZOL-4-YL)ACETAMIDE N-(2,3-DIMETHYL-5-OXO-1-PHENYL(3-PYRAZOLIN-4-YL))((4-(TRIFLUOROMETHOXY)PHENYL)AMINO)FORMAMIDE ((2,3-DIMETHYL-5-OXO-1-PHENYL(3-PYRAZOLIN-4-YL))AMINO)-N-((4-METHYLPHENYL)SULFONYL)FORMAMIDE N-(2,3-DIMETHYL-5-OXO-1-PHENYL(3-PYRAZOLIN-4-YL))(3-(2-CHLOROPHENYL)-5-METHYLISOXAZOL-4-YL)FORMAMIDE N-(2,3-DIMETHYL-5-OXO-1-PHENYL(3-PYRAZOLIN-4-YL))(3-(TRIFLUOROMETHYL)PHENYL)FORMAMIDE N-(1,5-DIMETHYL-3-OXO-2-PHENYL-2,3-DIHYDRO-1H-PYRAZOL-4-YL)-2-HYDROXYIMINO-ACETAMIDE AKOS BBS-00004703 N-(2,3-DIMETHYL-5-OXO-1-PHENYL(3-PYRAZOLIN-4-YL))(3-PHENOXYPHENYL)FORMAMIDE N-(2,3-DIMETHYL-5-OXO-1-PHENYL(3-PYRAZOLIN-4-YL))(3,4,5-TRIBROMOPHENYL)FORMAMIDE ETHYL N-(4-ANTIPYRYL)CARBAMATE N-(2,3-DIMETHYL-5-OXO-1-PHENYL(3-PYRAZOLIN-4-YL))(3,4,5-TRIIODOPHENYL)FORMAMIDE 1-(2,3-DIMETHYL-5-OXO-1-PHENYL(3-PYRAZOLIN-4-YL)-3-(3-(TRIFLUOROMETHYL)PHENYL)UREA

  • N-(2,3-dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)formamide
  • N-[1-(1-cyclohexa-1,3-dienyl)-2,3-dimethyl-5-oxo-4-pyrazolyl]formamide
  • Metamizole Sodium Impurity 1（Minocycline EP Impurity A）
  • Metamizole Sodium Impurity 1（Metamizole Sodium EP Impurity A）
  • 4-ForMylaMinoantipyrine FAA
  • Formamide, N-(2,3-dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)-
  • Formamide, N-antipyrinyl-
  • N-(1,5-Dimethyl-3-oxo-2-
  • N-(1,5-dimethyl-3-oxo-2-phenyl-4-pyrazolyl)formamide
  • N-(1,5-dimethyl-3-oxo-2-phenylpyrazol-4-yl)formamide
  • N-(1,5-dimethyl-3-oxo-2-phenyl-pyrazol-4-yl)methanamide
  • N-(3-keto-1,5-dimethyl-2-phenyl-pyrazol-4-yl)formamide
  • carboxamidoantipyrine
  • 1,2-Dihydro-4-formylamino-1,5-dimethyl-2-phenyl-3H-pyrazol-3-one
  • 1,5-Dimethyl-2-phenyl-4-(formylamino)-1,2-dihydro-3H-pyrazole-3-one
  • 4-Formylaminoantipyrin
  • N-(1,5-diMethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)forMaMide
  • 4-ForMaMidoantipyrine
  • N-AntipyrinylforMaMide
  • NSC 60565
  • MetaMizole IMpurity A (4-ForMylaMino Antipyrine)
  • 4-CARBOXAMIDO-1,2-DIHYDRO-1,5-DIMETHYL-2-PHENYL-3H-PYRAZOLE-3-ONE
  • 4-Carboxamido-2,3-dimethyl-1-phenyl-3-pyrazolin-5-one
  • WLN: T5NNVJ A1 BR& DMVH E1
  • Metamizole EP Impurity A
  • Metamizole impurity A CRS
  • 4-Formylamino-1,5-dimethyl-2-phenyl
  • Metamizole EP Impurity A (4-Formylamino Antipyrine)
  • Metamizole sodium EP Impurity A
  • Metamizole Impurity AQ: What is Metamizole Impurity A Q: What is the CAS Number of Metamizole Impurity A Q: What is the storage condition of Metamizole Impurity A Q: What are the applications of Metamizole Impurity A
  • Metamizole Sodium Monohydrate EP Impurity A
  • Metamizole Sodium Monohydrate Impurity A
  • METAMIZOLE EP IMP A
  • Metamizole EP Impurity A 4-(formylamino)-1,5-dimethyl-2-phenyl-2,3-dihydro-1H-pyrazol- 3-one
  • 4-Formylamino-1,5-dimethyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one (4-Formylaminophenazone)
  • 4-Formylaminoantipyrine 100 μg/mL in Acetonitrile
  • 1672-58-8
  • Aromatics
  • Heterocycles
  • Intermediates & Fine Chemicals
  • Metabolites & Impurities
  • Pharmaceuticals