| CAS Number | 119-34-6 |
|---|---|
| Molecular Formula | C6H6N2O3 |
| Molecular Weight | 154.125 |
| InChI Key | WHODQVWERNSQEO-UHFFFAOYSA-N |
| LogP | 0.96 |
| Synonyms |
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Applications:
UV-Vis Spectrum of 4-Amino-2-Nitrophenol
July 11, 2025
For optimal results in HPLC analysis, it is recommended to measure absorbance at a wavelength that matches the absorption maximum of the compound(s) being analyzed. The UV spectrum shown can assist in selecting an appropriate wavelength for your analysis. Please note that certain mobile phases and buffers may block wavelengths below 230 nm, rendering absorbance measurement at these wavelengths ineffective. If detection below 230 nm is required, it is recommended to use acetonitrile and water as low UV-transparent mobile phases, with phosphoric acid and its salts, sulfuric acid, and TFA as buffers.
For some compounds, the UV-Vis Spectrum is affected by the pH of the mobile phase. The spectra presented here are measured with an acidic mobile phase that has a pH of 3 or lower.
HPLC Method for Analysis of 4-Amino-2-nitrophenol on Primesep 100 Column
May 15, 2025
HPLC Method for 4-Amino-2-nitrophenol on Primesep 100 by SIELC Technologies
High Performance Liquid Chromatography (HPLC) Method for Analysis of 4-Amino-2-nitrophenol
4-Amino-2-nitrophenol is an organic compound with the molecular formula C₆H₆N₂O₃.
Properties:
Appearance: Typically a yellow to orange crystalline solid
Molecular weight: ~154.12 g/mol
Solubility: Soluble in water and polar organic solvents
Uses: Intermediate in the manufacture of dyes, pigments, and pharmaceuticals
4-Amino-2-nitrophenol can be retained and analyzed using the Primesep 100 stationary phase column. The analysis utilizes an isocratic method with a simple mobile phase consisting of water, acetonitrile (MeCN), and sulfuric acid. Detection is performed using UV at 275 nm.
| Column | Primesep 100, 4.6 x 150 mm, 5 µm, 100 A, dual ended |
| Mobile Phase | MeCN – 50% |
| Buffer | H2SO4 – 0.1% |
| Flow Rate | 1.0 ml/min |
| Detection | UV 275 nm |
| LOD | 93 ppb |
*LOD was determined for this combination of instrument, method, and analyte, and it can vary from one laboratory to another even when the same general type of analysis is being performed.
| Class of Compounds | Aromatic amine |
| Analyzing Compounds | 4-Amino-2-nitrophenol |
Application Column
Primesep 100
Column Diameter: 4.6 mm
Column Length: 150 mm
Particle Size: 5 µm
Pore Size: 100 A
Column options: dual ended
Separation of 4-Amino-2-nitrophenol on Newcrom R1 HPLC column
February 16, 2018
4-Amino-2-nitrophenol can be analyzed by this reverse phase (RP) HPLC method with simple conditions. The mobile phase contains an acetonitrile (MeCN), water, and phosphoric acid. For Mass-Spec (MS) compatible applications the phosphoric acid needs to be replaced with formic acid. Smaller 3 µm particles columns available for fast UPLC applications. This liquid chromatography method is scalable and can be used for isolation impurities in preparative separation. It also suitable for pharmacokinetics.
Application Column
Newcrom R1
The Newcrom columns are a family of reverse-phase-based columns. Newcrom A, AH, B, and BH are all mixed-mode columns with either positive or negative ion-pairing groups attached to either short (25 Å) or long (100 Å) ligand chains. Newcrom R1 is a special reverse-phase column with low silanol activity.
Select options
