5,6-Dichloro-3-nitropyridin-2-amine CAS 203794-33-6
| CAS No. | 203794-33-6 |
| Molecular Formula | C5H3Cl2N3O2 |
| Molecular Weight | 208.00 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5,6-Dichloro-3-nitropyridin-2-amine (CAS 203794-33-6) is a high-purity analytical reference standard with the molecular formula C5H3Cl2N3O2 and a molecular weight of 208.00 g/mol.
5,6-Dichloro-3-nitropyridin-2-amine (C5H3Cl2N3O2) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
CATO manufactures 5,6-Dichloro-3-nitropyridin-2-amine under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C5H3Cl2N3O2 |
| Molecular Weight | 208.00 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| 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 DMSO, DMF, methanol |
| 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 |
| CAS Registry Year (est.) | 2015 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Dichloro Standards
- 3,5-Dichloro-6-hydroxypicolinic acid (CAS 103997-22-4)
- 2,4-Dichloro-6-methyl-5-nitropyrimidine (CAS 13162-26-0)
- 4,6-Dichloro-2-methyl-5-nitropyrimidine (CAS 13162-43-1)
- 2,3-Dichloro-5-nitrophenol (CAS 1806356-80-8)
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- 2,4-Dichloro-3-nitrophenol (CAS 38902-87-3)
Recommended Standards
- 4-Iodo-2-methyl-1H-imidazole (CAS 73746-45-9)
- 5-Bromo-2-(difluoromethyl)pyridine (CAS 845827-13-6)
- 4-Iodo-1-methylimidazole (CAS 71759-87-0)
- 5-Iodo-1-methylpyrazole (CAS 34091-51-5)
- N-(2-nitrophenyl)-2-((5-phenyl-1,3,4-oxadiazol-2-yl)thio)acetamide (CAS 332101-22-1)
- rel-Benzyl (2R,3S)-2-(hydroxymethyl)-3-(trifluoromethyl)piperidine-1-carboxylate (CAS 1951439-30-7)
- 5-(2,6-Dichloro-3-(trifluoromethyl)phenyl)oxazole (CAS 2364585-10-2)
- m-PEG4-phosphonic acid (CAS 1872433-62-9)
- (2Z)-2-[4-(1H-Pyrrol-1-yl)phenyl]-3-[2-(trifluoromethyl)phenyl]prop-2-enenitrile (CAS 866019-94-5)
- Ethyl 1-benzyl-4,5-dioxopyrrolidine-3-carboxylate (CAS 5336-50-5)
- Apixaban Impurity 66 (CAS CATO-C4X-108866)
- 1-(4-bromophenyl)-2-[(2-hydroxyethyl)amino]ethan-1-ol (CAS 1368090-12-3)
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- Palmitoyl Tripeptide-1 TFA salt (CAS 2803375-47-3)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com