39001-23-5

Basic information

• Product Name: 3-THIOPHENECARBOXYLIC ACID HYDRAZIDE
• Synonyms: 3-THIOPHENECARBOXYLIC ACID HYDRAZIDE;THIOPHENE-3-CARBOXYLIC ACID HYDRAZIDE
• CAS NO: 39001-23-5
• Molecular Formula: C₅H₆N₂OS
• Molecular Weight: 142.18
• Mol File: 39001-23-5.mol
• Article Data: 1

Chemical Properties

• Melting Point: 126 °C
• Appearance: /
• Density: 1.335 g/cm³
• Refractive Index: 1.615
• CAS DataBase Reference: 3-THIOPHENECARBOXYLIC ACID HYDRAZIDE(CAS DataBase Reference)
• NIST Chemistry Reference: 3-THIOPHENECARBOXYLIC ACID HYDRAZIDE(39001-23-5)
• EPA Substance Registry System: 3-THIOPHENECARBOXYLIC ACID HYDRAZIDE(39001-23-5)

Safety Data

• Hazard Codes: Xi
• Statements: 20/21/22-36/37/38-36
• Safety Statements: 26-36/37/39-36
• Hazardous Substances Data: 39001-23-5(Hazardous Substances Data)

Usage

InChI:InChI=1/C5H6N2OS/c6-7-5(8)4-1-2-9-3-4/h1-3H,6H2,(H,7,8)

Downstream Products

• 51770-46-8 Di(thienyl-3)-2,5-triazole-1,3,4 
• 750627-40-8 C₁₃H₁₃N₃O₂S₂ 
• 78347-97-4 (E)-3-styrylthiophene 
• 1412407-32-9 C₁₉H₂₂N₄OS₂ 
• 1146542-70-2 2-phenyl-5-(thiophen-3-yl)-1,3,4-oxadiazole 
• 1016526-97-8 5-(thiophen-3-yl)-1,3,4-oxadiazol-2-amine 

Relevant articles and documents

Thermodynamics and Kinetics of the Reaction between Pyridoxal-5-Phosphate and Hydrazides of 2-Methylfuran-3-Carboxylic and Thiophene-3-Carboxylic Acids in an Aqueous Solution

Abstract: The stability constants of pyridoxal-5-phosphate hydrazones formed with 2-methylfuran-3-carbohydrazide and thiophene-3-carbohydrazide in an aqueous solution at pH 1.9, 6.6, 7.0, and 7.4 are determined via spectrophotometry. The kinetics of the processes of formation and hydrolysis of the Schiff bases are studied, and the constant of the direct and reverse reactions are calculated from the electronic absorption spectra. The stability constants of the Schiff bases are calculated from their ratio. The thermodynamic parameters of the reaction of formation (log K, ΔH, and TΔS) of both hydrazones at pH 6.6 are determined via calorimetry. The reasons for the differences between the equilibrium constants calculated from the data of spectrophotometric and kinetic experiments are discussed, and the reliability of the obtained results is analyzed.