4185-69-7

Basic information

• Product Name: 1-(2,4-dinitrophenyl)pyridinium chloride
• Synonyms: 1-(2,4-dinitrophenyl)pyridinium chloride;1-(2,4-dinitrophenyl)-pyridiniu chloride;N-(2,4-Dinitrophenyl)pyridinium chloride;Pyridinium, 1-(2,4-dinitrophenyl)-, chloride;Pyridinium,1-(2,4-dinitrophenyl)-,chloride;Zincke Salt
• CAS NO: 4185-69-7
• Molecular Formula: C₁₁H₈N₃O₄*Cl
• Molecular Weight: 281.65192
• EINECS: 224-059-9
• Mol File: 4185-69-7.mol
• Article Data: 38

Chemical Properties

• Melting Point: 191°C(dec.)(lit.)
• Appearance: /
• CAS DataBase Reference: 1-(2,4-dinitrophenyl)pyridinium chloride(CAS DataBase Reference)
• NIST Chemistry Reference: 1-(2,4-dinitrophenyl)pyridinium chloride(4185-69-7)
• EPA Substance Registry System: 1-(2,4-dinitrophenyl)pyridinium chloride(4185-69-7)

Safety Data

• Hazardous Substances Data: 4185-69-7(Hazardous Substances Data)

Usage

Description

1-(2,4-dinitrophenyl)pyridinium chloride is a chemical compound characterized by its yellow crystalline appearance and high solubility in water. It features a pyridine ring with a 2,4-dinitrophenyl group attached, along with a chloride ion. 1-(2,4-dinitrophenyl)pyridinium chloride is renowned for its capacity to form stable and colored derivatives with various amines, which makes it a valuable reagent in the fields of organic synthesis and analysis.

Uses

Used in Organic Chemistry:
1-(2,4-dinitrophenyl)pyridinium chloride is used as a detection agent for primary and secondary amines due to its ability to form stable and colored derivatives with these amines.
Used in the Hinsberg Test:
In the Hinsberg test, a qualitative method for distinguishing between different types of amines, 1-(2,4-dinitrophenyl)pyridinium chloride is used as a reagent to identify the presence and nature of amines.
Used in Pharmaceutical Research:
1-(2,4-dinitrophenyl)pyridinium chloride is employed as a research tool in the pharmaceutical industry, where its interaction with amines can provide insights into the development of new drugs and their mechanisms of action.
Used in Fluorescence Studies:
As a spectral probe, 1-(2,4-dinitrophenyl)pyridinium chloride is utilized in fluorescence studies to investigate the properties of amines and their interactions with other molecules, which can be crucial for understanding molecular behavior and designing new compounds with specific functions.

InChI:InChI=1/C11H8N3O4/c15-13(16)9-4-5-10(11(8-9)14(17)18)12-6-2-1-3-7-12/h1-8H/q+1

Upstream product

• 110-86-1 pyridine 
• 97-00-7 1-chloro-2,4-dinitro-benzene 
• 53405-99-5 5-(2,4-dinitro-anilino)-penta-2,4-dienal 
• 7647-01-0 hydrogenchloride 
• 553-26-4 4,4'-bipyridine 

Downstream Products

• 2581-81-9 1-(5t-pyrrolidino-penta-2t,4-dienylidene)-pyrrolidinium; perchlorate 
• 53782-72-2 2,4-dinitro-N-(5-piperidino-penta-2,4-dienyliden)-aniline; hydrochloride 
• 77806-33-8 1-(4-hydroxyphenyl)pyridin-1-ium chloride 
• 17434-93-4 1-(4-chlorophenyl)pyridin-1-ium chloride 
• 29522-92-7 5-p-anisidino-penta-2,4-dienal-(4-methoxy-phenylimine); hydrochloride 
• 93836-84-1 5-(4-carboxy-anilino)-penta-2,4-dienal-(4-carboxy-phenylimine); hydrochloride 
• 97-02-9 2,4-Dinitroanilin 
• 2486-09-1 2,4-dinitro-1-phenylsulfanyl-benzene 
• 16062-74-1 1,5-bis-(N-ethyl-anilino)-pentamethinium ; chloride 
• 2363-29-3 2,4-dinitro-2'-methoxydiphenyl ether 
• 61083-49-6 N-(p-nitrophenyl)pyridinium chloride 
• 4688-60-2 Zincke aldehyde 

Relevant articles and documents

[12]Annulene gemini surfactants: Structure and self-assembly

(Chemical Equation Presented) The long and short of it: Gemini surfactants with a non-Hueckel diaza[12]annulene core have been synthesized (see picture). DFT computations give a minimum-energy conformation with alternate shorter and longer bonds, and with the two N substituents pointing away from each other. Studies on the aggregation of the molecules in water show they encounter packing difficulties, with no evidence for ring/ring interactions at the micelle surfaces.

Aggregation?induced emissions in columnar wedge?shaped pyridinium?based ionic liquid crystals

Two series of ILCs derived from wedge?shaped N-phenylpyridiniums 1–2 were prepared and their mesomorphic properties were investigated. The X?ray crystal structure analyses of two single crystals 2-PF6 (n = 12) and 2-NTf2 (n = 12) revealed that bilayer structures induced by H?bonds in the solid state were observed. A complementary dimeric structure induced by H?bonds in such type of wedge?shaped cation (or anion) moiety was attributed to the formation of columnar phases. The type of counter anions has a significant influence on the formation of the mesophase; five counter anions (i.e. X = PF6￣, BF4￣, OTf￣, SCN￣, RSO3￣) induced columnar mesophase. In contrast, anion X = Tf2N￣ as a bulky moiety and less H?bond active sites formed crystal phase. The powder XRD data appeared that the diameter of the hard columnar part increased with the effective ionic radius for different counter ion. A linear correlation plot (R2 = 0.9203) was obtained. All ethanol solutions of compounds 1–2 were detected without any observable signals on photoluminescence. But compounds 2-X will aggregate in the aqueous mixture with high water fractions (?w) needed to turn on their light emission process. Weak PL signals are recorded at ?w w > 50% till it reached to the maximum intensity at ?w ~70%.

PROCESS FOR THE PREPARATION OF SODIUM 4-(2-((1E,3E,5E,7Z)-7-(1,1-DIMETHYL-3-(4-SULFONATOBUTYL)-1H-BENZO[e]INDOL-2(3H)-YLIDENE) HEPTA-1,3,5-TRIENYL)-1,1-DIMETHYL-1H-BENZO[e]INDOLIUM-3-YL) BUTANE-1-SULFONATE (INDOCYANINE GREEN)

A process for the preparation of substantially pure Indocyanine green of formula with purity greater than 99.0% is provided. More particularly, the embodiments relate to the process for the preparation of Indocyanine green of formula and its intermediates thereof. It further provides crystalline form I of Indocyanine green of formula and process thereof.