3-Chloro-2-nitrophenol CAS 17802-02-7
| CAS No. | 17802-02-7 |
| Molecular Formula | C6H4ClNO3 |
| Molecular Weight | 173.55 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 3-Chloro-2-nitrophenol 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.
3-Chloro-2-nitrophenol (CAS 17802-02-7) is a high-purity analytical reference standard with the molecular formula C6H4ClNO3 and a molecular weight of 173.55 g/mol.
Based on its molecular formula C6H4ClNO3, 3-Chloro-2-nitrophenol contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 173.55 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C6H4ClNO3 |
| Molecular Weight | 173.55 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Chloro Standards
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- 2-Chloro-5-hydroxyisonicotinic acid (CAS 1060804-57-0)
- 6-Chloro-4-hydroxypicolinic acid (CAS 1060809-87-1)
- 4-Chloro-6-nitrosoresorcinol (CAS 109755-36-4)
- 5-Chloro-3-hydroxypicolinic acid (CAS 1211515-34-2)
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- 6-Chloro-5-hydroxynicotinic acid (CAS 1211531-26-8)
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Recommended Standards
- 5-Chloro-2,3-difluorobenzonitrile (CAS 1624261-31-9)
- 5-Chloro-6-hydroxypicolinic acid (CAS 1822931-95-2)
- 6-Chloro-4-hydroxynicotinic Acid (CAS 162371-83-7)
- 2-Chloro-3-hydroxyisonicotinic Acid (CAS 185423-02-3)
- 2-(2-Fluoro-5-(1-methylcyclopropyl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 2820542-22-9)
- Ethyl 2-amino-5-(4-(methoxycarbonyl)phenyl)-1H-pyrrole-3-carboxylate (CAS 1011716-95-2)
- 2-Methyl-4'-(5-methyl-1,2,4-oxadiazol-3-yl)-[1,1'-biphenyl]-4-carboxylic acid (CAS 1179360-16-7)
- Trifluoromethoxy-acetonitrile (CAS 1301739-28-5)
- 2-Chloro-2,2-difluoro-1-(2-phenyl-1H-indol-3-yl)ethan-1-one (CAS 860650-06-2)
- Edaravone Impurity 9 (CAS 19735-89-8)
- Cefdinir Impurity 75 (CAS CATO-C4X-121075)
- 1,3-Dichloropropan-2-yl 4-methylbenzenesulfonate (CAS 16670-52-3)
- 1-Ethoxycarbonyl-5-methyl-(3R)-3-tert-butyl-dimethylsilyloxypentanedioate (CAS 158275-79-7)
- Semaglutide impurity 26 (CAS CATO-C4X-222626)
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