≥98% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.
Room temperature Ships Normal Check lot-specific COA for exact specifications.
SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.
Cited in 2 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
2-Pyridinol 1-oxide can form stable chelate complexes with transition metal ions.
| Pubchem Sid | 488184443 |
|---|---|
| Pubchem Sid Url | https://pubchem.ncbi.nlm.nih.gov/substance/488184443 |
| Canonical Smiles | C1=CC(=O)N(C=C1)O |
| IUPAC Name | 1-hydroxypyridin-2-one |
| InChIKey | SNUSZUYTMHKCPM-UHFFFAOYSA-N |
| INCHI | 1S/C5H5NO2/c7-5-3-1-2-4-6(5)8/h1-4,8H |
| Isomeric SMILES | C1=CC(=O)N(C=C1)O |
| WGK Germany | 3 |
| Alternate CAS | 822-89-9 |
| Molecular Weight | 111.1 |
| Beilstein | 1422545 |
| Reaxy-Rn | 109930 |
| Reaxys-RN_link_address | https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=109930&ln= |
Comprehensive hazard, handling, storage, and regulatory compliance document.
Download SDS →Lot-specific quality data. Enter your lot number to retrieve the exact COA.
Look up COA →Full quality attributes and acceptance criteria for this grade.
View spec sheet →Taxonomy Tree
| Kingdom | Organic compounds |
|---|---|
| Superclass | Organoheterocyclic compounds |
| Class | Pyridines and derivatives |
| Subclass | Hydropyridines |
| Intermediate Tree Nodes | Not available |
| Direct Parent | Pyridinones |
| Alternative Parents | Dihydropyridines Heteroaromatic compounds Lactams Azacyclic compounds Organopnictogen compounds Organooxygen compounds Organonitrogen compounds Organic oxides Hydrocarbon derivatives |
| Molecular Framework | Aromatic heteromonocyclic compounds |
| Substituents | Pyridinone - Dihydropyridine - Heteroaromatic compound - Lactam - Azacycle - Organic nitrogen compound - Organic oxygen compound - Organopnictogen compound - Organic oxide - Hydrocarbon derivative - Organooxygen compound - Organonitrogen compound - Aromatic heteromonocyclic compound |
| Description | This compound belongs to the class of organic compounds known as pyridinones. These are compounds containing a pyridine ring, which bears a ketone. |
| External Descriptors | Not available |
Find and download the COA for your product by matching the lot number on the packaging.
| Lot Number | Certificate Type | Date | Item |
|---|---|---|---|
 H2426102 | Certificate of Analysis | Jun 09, 2026 | P103097 |
| F2604529 | Certificate of Analysis | May 18, 2026 | P103097 |
| F2604533 | Certificate of Analysis | May 18, 2026 | P103097 |
| F2604537 | Certificate of Analysis | May 18, 2026 | P103097 |
| F2604540 | Certificate of Analysis | May 18, 2026 | P103097 |
| F2604543 | Certificate of Analysis | May 18, 2026 | P103097 |
| E2204089 | Certificate of Analysis | Nov 24, 2025 | P103097 |
| E2204099 | Certificate of Analysis | Nov 24, 2025 | P103097 |
| E2204107 | Certificate of Analysis | Nov 24, 2025 | P103097 |
| E2204125 | Certificate of Analysis | Nov 24, 2025 | P103097 |
| E2607091 | Certificate of Analysis | Oct 22, 2025 | P103097 |
| J2516073 | Certificate of Analysis | Oct 22, 2025 | P103097 |
| J2127366 | Certificate of Analysis | Aug 15, 2023 | P103097 |
| L1721093 | Certificate of Analysis | May 12, 2023 | P103097 |
| Flash Point(°F) | 212 °F |
|---|---|
| Flash Point(°C) | 100 °C |
| Melt Point(°C) | 147-152°C |
| Molecular Weight | 111.100 g/mol |
| XLogP3 | -0.700 |
| Hydrogen Bond Donor Count | 1 |
| Hydrogen Bond Acceptor Count | 2 |
| Rotatable Bond Count | 0 |
| Exact Mass | 111.032 Da |
| Monoisotopic Mass | 111.032 Da |
| Topological Polar Surface Area | 40.500 Ų |
| Heavy Atom Count | 8 |
| Formal Charge | 0 |
| Complexity | 160.000 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| The total count of all stereochemical bonds | 0 |
| Covalently-Bonded Unit Count | 1 |
| 1. Ran Ma, Liang-Nian He, Yue-Biao Zhou. (2015) An efficient and recyclable tetraoxo-coordinated zinc catalyst for the cycloaddition of epoxides with carbon dioxide at atmospheric pressure. GREEN CHEMISTRY, 18 (1): (226-231). [PMID:] [10.1039/C5GC01826A] |
| 2. Ying Chen, Lei Tian, Wen Liu, Yi Mei, Qiu-Ju Xing, Yi Mu, Ling-Ling Zheng, Qian Fu, Jian-Ping Zou, Daishe Wu. (2024) Controllable Pyridine N-Oxidation–Nucleophilic Dechlorination Process for Enhanced Dechlorination of Chloropyridines: The Cooperation of HCO4– and HO2–. ENVIRONMENTAL SCIENCE & TECHNOLOGY, [PMID:38330552] [10.1021/acs.est.3c09878] |
