7474-11-5

Basic information

• Product Name: 1-(2,4-dinitrophenyl)-3,5-dimethyl-1H-pyrazole
• Synonyms: 1-(2,4-Dinitro-phenyl)-3,5-dimethyl-1H-pyrazole; 1H-pyrazole, 1-(2,4-dinitrophenyl)-3,5-dimethyl-
• CAS NO: 7474-11-5
• Molecular Formula: C₁₁H₁₀N₄O₄
• Molecular Weight: 262.2215
• Mol File: 7474-11-5.mol
• Article Data: 20

Chemical Properties

• Boiling Point: 418.6°C at 760 mmHg
• Flash Point: 206.9°C
• Density: 1.47g/cm³
• Vapor Pressure: 7.89E-07mmHg at 25°C
• Refractive Index: 1.668
• CAS DataBase Reference: 1-(2,4-dinitrophenyl)-3,5-dimethyl-1H-pyrazole(CAS DataBase Reference)
• NIST Chemistry Reference: 1-(2,4-dinitrophenyl)-3,5-dimethyl-1H-pyrazole(7474-11-5)
• EPA Substance Registry System: 1-(2,4-dinitrophenyl)-3,5-dimethyl-1H-pyrazole(7474-11-5)

Safety Data

• Hazardous Substances Data: 7474-11-5(Hazardous Substances Data)

Usage

General Description

The chemical 1-(2,4-dinitrophenyl)-3,5-dimethyl-1H-pyrazole, also known as DNPH, is a yellow crystalline compound that is commonly used as a reagent for detecting carbonyl compounds. It is particularly useful in the analysis of aldehydes and ketones, as it forms brightly colored derivatives when it reacts with these functional groups. DNPH is insoluble in water and nonreactive with most common laboratory solvents, making it an ideal reagent for the selective detection and quantification of carbonyl compounds in complex mixtures. The compound is also stable under a wide range of environmental conditions, allowing for long-term storage and extended analytical use. Overall, DNPH is a versatile and valuable chemical tool for the identification and measurement of carbonyl compounds in various applications, including environmental monitoring, industrial process control, and research laboratory analysis.

Upstream product

• 67-51-6 3,5-dimethyl-1H-pyrazole 
• 2486-07-9 2,4-dinitrophenyl phenyl ether 
• 105002-68-4 1-(3,5-dinitrophenyl)hydrazine 
• 123-54-6 acetylacetone 
• 97-00-7 1-chloro-2,4-dinitro-benzene 
• 119-26-6 (2,4-dinitro-phenyl)-hydrazine 

Downstream Products

• 1215212-19-3 C₁₁H₉FN₄O₄ 
• 108444-23-1 1-(2,4-Dinitro-phenyl)-3,5-dimethyl-1H-pyrazole-4-carboxylic acid 
• 67-51-6 3,5-dimethyl-1H-pyrazole 
• 1670-17-3 N,N-dimethyl-2,4-dinitroaniline 
• 97-02-9 2,4-Dinitroanilin 
• 2044-88-4 N-methyl-2,4-dinitroaniline 
• 60418-59-9 C₁₁H₁₀N₄O₂ 

Relevant articles and documents

1-(2,4-dinitrophenyl)-3,5-dimethylpyrazole

The asymmetric unit of the title compound consists of two independent molecules of C11H10N4O4. The pyrazole and dinitrophenyl rings are individually planar and are twisted about the N - Csp2bond joini

HBF4/ACN: A simple and efficient protocol for the synthesis of pyrazoles under ambient reaction conditions

An efficient and novel protocol for pyrazole synthesis has been developed by using fluoroboric acid as the acid catalyst. Simple and easily available 1,3-diketone and hydrazine derivatives are taken as the substrates for this purpose. The reaction entails

Transition metal containing ionic liquid-assisted one-pot synthesis of pyrazoles at room temperature

Abstract: The feasible and one of the green ways to synthesize organic compounds especially pyrazole and its derivatives are systematically presented. The one-pot synthesis of pyrazole was achieved by condensation of various hydrazines and 1,3-diketone derivatives at room temperature using transition metal-based ionic liquids. Herein, the unique combination of Fe(III) with ionic liquid is explored and utilized as an efficient homogeneous catalyst for the synthesis of pyrazole and its derivatives. The homogenous catalyst thus synthesised was re-used up to the fourth cycle (with 90%, 88%, 84%, 78% yields respectively). Graphic abstract: Pyrazoles are synthesized in the presence of transition metal-based ionic liquids at room temperature. From the green chemistry perspective, ionic liquids are considered as green solvents which have gained remarkable attention because of its non-toxic, non-corrosive and non-flammable nature while the presence of transition metal as a part of counter anion gives it more catalytic activity. [Figure not available: see fulltext.].