20737-59-1

Basic information

• Product Name: 5-methyl-3-phenyl-1H-pyrazole hydrochloride (1:1)
• CAS NO: 20737-59-1
• Molecular Formula: C₁₀H₁₀N₂*ClH
• Molecular Weight: 194.6607
• Mol File: 20737-59-1.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 333.9°C at 760 mmHg
• Flash Point: 156.2°C
• Vapor Pressure: 0.000258mmHg at 25°C
• CAS DataBase Reference: 5-methyl-3-phenyl-1H-pyrazole hydrochloride (1:1)(CAS DataBase Reference)
• NIST Chemistry Reference: 5-methyl-3-phenyl-1H-pyrazole hydrochloride (1:1)(20737-59-1)
• EPA Substance Registry System: 5-methyl-3-phenyl-1H-pyrazole hydrochloride (1:1)(20737-59-1)

Safety Data

• Hazardous Substances Data: 20737-59-1(Hazardous Substances Data)

Upstream product

• 33951-43-8 3-hydroxy-1-phenyl-but-2-en-1-one 

Downstream Products

• 10222-79-4 3-phenyl-5-methylpyrazole-1-carboxamide 

Relevant articles and documents

On water synthesis of N-unsubstituted pyrazoles: Semicarbazide hydrochloride as an alternative to hydrazine for preparation of pyrazole-3-carboxylate derivatives and 3,5-disubstituted pyrazoles

A green, simple and highly efficient method for the synthesis of pyrazole-3-carboxylates and 3,5-disubstituted pyrazoles by cyclization of 4-aryl(hetaryl, alkyl)-2,4-diketoesters and 1,3-diketones with semicarbazide hydrochloride under on water conditions has been developed. This method also does not require toxic hydrazine and product purification, eliminating the use of toxic liquid chemicals.