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433853

Sigma-Aldrich

5-Chloro-3-methyl-1-phenyl-4-pyrazolecarboxaldehyde

99%

Empirical Formula (Hill Notation):
C11H9ClN2O
CAS Number:
Molecular Weight:
220.65
MDL number:
PubChem Substance ID:
NACRES:
NA.22

Quality Level

assay

99%

mp

145-148 °C (lit.)

SMILES string

Cc1nn(c(Cl)c1C=O)-c2ccccc2

InChI

1S/C11H9ClN2O/c1-8-10(7-15)11(12)14(13-8)9-5-3-2-4-6-9/h2-7H,1H3

InChI key

DKZPJLZXLKAMDO-UHFFFAOYSA-N

Related Categories

General description

5-Chloro-3-methyl-1-phenyl-4-pyrazolecarboxaldehyde (5-Chloro-3-methyl-1-phenyl-1H-pyrazole-4-carboxaldehyde) can be synthesized from 3-methyl-1-phenyl-1Hpyrazol-5(4H)-one under Vilsmeier-Haack reaction conditions. Knoevenagel condensation of 5-chloro-3-methyl-1-phenyl-1H-pyrazole-4-carboxaldehyde with ethylcyanoacetate at 0°C has been reported to afford ethyl-2-cyano-3-(5-chloro-3-methyl-1-phenyl-1H-pyrazole-4-yl)propionate. It participates in the synthesis of 2-((5-phenoxy-3-methyl-1-phenyl-1H-pyrazol- 4-yl)methylene)hydrazinecarbothiomide derivatives with a potential anticonvulsant property.

Application

5-Chloro-3-methyl-1-phenyl-4-pyrazolecarboxaldehyde (5-Chloro-3-methyl-1-phenyl-1H-pyrazole-4-carboxaldehyde) may be employed as starting material for the following syntheses:
  • 5-chloro-3-methyl-1-phenyl-1H-pyrazole-4-carboxaldehyde hydrazone
  • N1-((5-chloro-3-methyl-1-phenyl-1H-pyrazol-4-yl)methylene)thiosemicarbazone
  • pyrazole derivatives, which were pharmacologically evaluated for analgesic (tail flick) and anti-inflammatory (based on carrageenan-induced paw edema) activities
  • N′-[(5-chloro-3-methyl-1-phenyl-1H-pyrazol-4- yl)methylene] 2/4-substituted hydrazides

Packaging

1, 5 g in glass bottle

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Precautionary Statements

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

Certificate of Analysis

Certificate of Origin

New pyrazole derivatives of potential biological activity.
Farghaly A-R, et al.
ARKIVOC (Gainesville, FL, United States), 7, 228-241 (2012)
Convenient Synthesis and Characterization of Pyrazolones and Schiff Bases.
Girisha KS and Kalluraya B.
Synthetic Communications, 42(20), 3097-3102 (2012)
Pharmacological screening for anti-inflammatory, analgesic activity of pyrazolyl derivatives along with molecular docking studies.
Kaushik D, et al.
Medicinal Chemistry Research, 21(11), 3646-3655 (2012)
Design and Synthesis of Pyrazolyl Thiosemicarbazones as New Anticonvulsants.
Deng XQ and Song MX.
Bull. Korean Chem. Soc., 35(9), 2733-2733 (2014)
Darpan Kaushik et al.
European journal of medicinal chemistry, 45(9), 3943-3949 (2010-06-25)
A series of N'-[(5-chloro-3-methyl-1-phenyl-1H-pyrazol-4-yl)methylene] 2/4-substituted hydrazides were synthesized using appropriate synthetic route and characterized by elemental analysis and spectral data. The anticonvulsant activity of some of the synthesized compounds were evaluated against maximal electroshock induced seizure (MES) and subcutaneous pentylenetetrazol...

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