2,3-Dinitrophenol CAS 66-56-8
| CAS No. | 66-56-8 |
| Molecular Formula | C6H4N2O5 |
| Molecular Weight | 184.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 2,3-Dinitrophenol.
2,3-Dinitrophenol (CAS 66-56-8) is a high-purity analytical reference standard with the molecular formula C6H4N2O5 and a molecular weight of 184.11 g/mol.
The molecular framework of 2,3-Dinitrophenol (C6H4N2O5) is characterized by a carbohydrate-derived structure, an amide group. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 2,3-Dinitrophenol meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C6H4N2O5 |
| Molecular Weight | 184.11 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 2 |
Related Dinitrophenol Standards
- 2,5-Dinitrophenol (Wetted with water >20%) (CAS 329-71-5)
- 3,5-Dinitrophenol (CAS 586-11-8)
- 3,4-Dinitrophenol(wetted with water >15%) (CAS 577-71-9)
- 2,4-Dinitrophenol (CAS 51-28-5)
- 2,4-Dinitrophenol-d3 (CAS 93951-77-0)
- 3-Methyl-2,4-dinitrophenol (CAS 1817-66-9)
- 4-Methyl-2,3-dinitrophenol (CAS 68191-07-1)
- 4-Methyl-2,5-dinitrophenol (CAS 20294-52-4)
Recommended Standards
- (s)-4-Hydroxy-4-(trifluoromethyl)tetrahydro-2h-pyran-2-one (CAS 956398-58-6)
- 2,3-Pyrazinedicarboxylic acid, 1,6-dihydro-6-oxo- (CAS 73403-48-2)
- (R)-4-hydroxy-4-(trifluoromethyl)tetrahydro-2H-pyran-2-one (CAS 956398-59-7)
- (1R,3r)-3-hydroxy-3-(trifluoromethyl)cyclobutane-1-carboxylic acid (CAS 2095267-84-6)
- 1-Ethyl-4-iodo-1h-pyrazole-3-carboxylic acid (CAS 956909-60-7)
- 6-Bromo-4-methylpyridin-2-ol (CAS 153564-26-2)
- 5-((2-((4-Benzylpiperidin-1-yl)methyl)phenoxy)methyl)-2-chlorothiazole (CAS 866149-59-9)
- 4-chloro-3-(methanesulfinylmethyl)aniline (CAS 1250417-58-3)
- n-(4-Fluorophenyl)-2-(piperazin-1-yl)acetamide hydrochloride (CAS 1052418-64-0)
- 2,6-DiMethyltyrosine HCl (CAS 80110-73-2)
- 1-(4-Bromo-2-pyridyl)piperazine (CAS 1201643-59-5)
- (((9H-fluoren-9-yl)methoxy)carbonyl)serine (CAS 136083-72-2)
- (1S)-6,6'-Dioctyl[1,1'-binaphthalene]-2,2'-diol (CAS 1154061-89-8)
- Semaglutide impurity 272 (CAS CATO-C4X-2226272)
Why CATO?
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