2-Chloro-3-hydroxypyridine 1-oxide CAS 30810-20-9
| CAS No. | 30810-20-9 |
| Molecular Formula | C5H4ClNO2 |
| Molecular Weight | 145.54 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 145.54 g/mol gives 2-Chloro-3-hydroxypyridine 1-oxide distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2-Chloro-3-hydroxypyridine 1-oxide (CAS 30810-20-9) is a high-purity analytical reference standard with the molecular formula C5H4ClNO2 and a molecular weight of 145.54 g/mol.
The molecular framework of 2-Chloro-3-hydroxypyridine 1-oxide (C5H4ClNO2) is characterized by an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 2-Chloro-3-hydroxypyridine 1-oxide 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 | C5H4ClNO2 |
| Molecular Weight | 145.54 g/mol |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1965 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Chloro Standards
- 3-Chloro-6-hydroxypyridin-2(1H)-one (CAS 103792-71-8)
- 3-Chloro-1H-pyrrole-2-carboxylic acid (CAS 1053658-09-5)
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- 2-Chloro-1-(oxazol-5-yl)ethan-1-one (CAS 1421314-19-3)
Recommended Standards
- 2-Chloro-1-(isoxazol-3-yl)ethanone (CAS 90251-23-3)
- 2-Chloro-5-hydroxypyridine 1-oxide (CAS 727736-64-3)
- 1-(3-Chloroisoxazol-5-yl)ethan-1-one (CAS 80403-94-7)
- 2-Methyl-1,3-oxazole-4-carbonyl chloride (CAS 62348-22-5)
- N-(4-chloro-1,1-dioxidotetrahydrothiophen-3-yl)cyclopropanecarboxamide (CAS 929835-26-7)
- 3-Chloro-4-(thiomethyl)benzophenone (CAS 197438-99-6)
- 2-Butoxy-N-[2-(2-methylphenoxy)butyl]aniline (CAS 1040689-43-7)
- PCB-28-d4 & PCB-114-d4 (CAS CATO-MCEM591028-HE)
- 2,4,6-Tribromopyridin-3-amine (CAS 84539-49-1)
- Gelsenicine (CAS 82354-38-9)
- Methyl 5-Bromoindole-3-carboxylate (CAS 773873-77-1)
- Hydrazinecarbodithioicacid,(1-methylethylidene)-,methylester,palladiumcomplex (CAS 82468-04-0)
- Bisphenol A-13C12 (CAS 263261-65-0)
- Fragment-[3-31]-Liraglutide (CAS CATO-C4X-199232)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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