2,5-Dichloro-4-hydroxypyridine CAS 847664-65-7
| CAS No. | 847664-65-7 |
| Molecular Formula | C5H3Cl2NO |
| Molecular Weight | 163.99 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 2,5-Dichloro-4-hydroxypyridine 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.
2,5-Dichloro-4-hydroxypyridine (CAS 847664-65-7), molecular formula C5H3Cl2NO and molecular weight 163.99 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C5H3Cl2NO, 2,5-Dichloro-4-hydroxypyridine contains an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 163.99 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C5H3Cl2NO |
| Molecular Weight | 163.99 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 tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Dichloro Standards
- 2,3-Dichloro-5-hydroxypyridine (CAS 110860-92-9)
- 2,6-Dichloro-4-hydroxypyridine (CAS 17228-74-9)
- 3,5-dichloro-1H-pyrrole-2-carbaldehyde (CAS 1783867-68-4)
- 2,4-Dichloro-6-methyltriazine (CAS 1973-04-2)
- 2,5-Dichloro-4(1H)pyridinone (CAS 343781-57-7)
- 2,6-Dichloro-3-hydroxypyridine (CAS 52764-11-1)
- 3,5-Dichloro-2-pyrazinamine (CAS 873-42-7)
- 5,6-Dichloro-2(1H)-pyridinone (CAS 24525-63-1)
Recommended Standards
- 2,5-Dichloropyridine 1-oxide (CAS 53976-62-8)
- 2,4-Dichloropyridin-3-ol (CAS 405141-76-6)
- 2,3-Dichloropyridine1-oxide (CAS 53976-65-1)
- 2,6-Dichloropyridin-4(1H)-one (CAS 253435-44-8)
- 71030-37-0 5,8,10,14-Eicosatetraenoic acid, 12-hydroxy-, (E,Z,Z,Z)- 12-HETE 12-Hydroxyeicosatetraenoic acid 12-Hydroxy-5,8,10,14-eicosatetraenoic acid (CAS 71030-37-0)
- (4-butylphenyl)(thien-2-yl)methylamine (CAS 863668-03-5)
- 1-((2R,3S,4R,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)pyrimidine-2,4(1H,3H)-dione (CAS 4348-61-2)
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- 6-methoxy-2,3,4,5-tetrahydro-1H-3-benzazepine (CAS 90047-53-3)
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- 5-Chloro-2-oxo-2,3-dihydro-1H-pyrrolo[2,3-b]pyridine-4-carbonitrile (CAS 1190315-52-6)
- (5-Bromo-2-ethoxyphenyl)methanamine (CAS 887582-48-1)
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- Nonapeptide-1 (CAS 158563-45-2)
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