191419-14-4

Basic information

• Product Name: 5-CHLORO-1-METHYL-3-PHENYL-1H-PYRAZOLE-4-CARBOXYLIC ACID
• Synonyms: 5-CHLORO-1-METHYL-3-PHENYL-1H-PYRAZOLE-4-CARBOXYLIC ACID
• CAS NO: 191419-14-4
• Molecular Formula: C₁₁H₉ClN₂O₂
• Molecular Weight: 236.65
• Mol File: 191419-14-4.mol
• Article Data: 1

Chemical Properties

• Melting Point: 176-177°C
• Appearance: /
• CAS DataBase Reference: 5-CHLORO-1-METHYL-3-PHENYL-1H-PYRAZOLE-4-CARBOXYLIC ACID(CAS DataBase Reference)
• NIST Chemistry Reference: 5-CHLORO-1-METHYL-3-PHENYL-1H-PYRAZOLE-4-CARBOXYLIC ACID(191419-14-4)
• EPA Substance Registry System: 5-CHLORO-1-METHYL-3-PHENYL-1H-PYRAZOLE-4-CARBOXYLIC ACID(191419-14-4)

Safety Data

• Hazard Codes: Xi
• Statements: 36
• Safety Statements: 26
• HazardClass: IRRITANT
• Hazardous Substances Data: 191419-14-4(Hazardous Substances Data)

Upstream product

• 883-38-5 5-chloro-1-methyl-3-phenyl-1H-pyrazole-4-carboxaldehyde 
• 34347-81-4 1-methyl-3-phenyl-5-hydroxyl-1H-pyrazol 

Downstream Products

• 191419-15-5 5-chloro-1-methyl-3-phenyl-1H-pyrazole-4-carboxylic acid ethyl ester 

Relevant articles and documents

Reaction of 4-Hydroxy-5-oximino-3-thiophenecarboxylates with Hydrazines. Formation of Pyrazolylthiohydroxamic Acids

The reactions of 4-hydroxy-5-oximino-3-thiophenecarboxylates with hydrazine and substituted hydrazines have been investigated. The products of the reactions have been shown to be pyrazole-3- or 5-thiohydroxamic acids rather than the hydrazones previously described by Benary and Silberstrom. Two alternate mechanisms are proposed which account for the regiochemical outcome. The structures of the pyrazole-3- and 5-thiohydroxamic acids and corresponding nitriles have been proven by independent synthesis, comparison to known compounds, and by proton and carbon magnetic resonance and long range HETCOR experiments.