5-Fluoro-2-hydroxypyridine CAS 51173-05-8
| CAS No. | 51173-05-8 |
| Molecular Formula | C5H4FNO |
| Molecular Weight | 113.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Fluoro-2-hydroxypyridine (CAS 51173-05-8), molecular formula C5H4FNO and molecular weight 113.09 g/mol, is a CATO reference standard with documented purity and traceability.
5-Fluoro-2-hydroxypyridine (C5H4FNO) contains an amide group, a hydroxyl group, an ether linkage, fluorine substitution. Halogen substitution raises its density and boiling point; 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 5-Fluoro-2-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.
Physical & Chemical Properties
| Molecular Formula | C5H4FNO |
| Molecular Weight | 113.09 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 |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1971 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Related Fluoro Standards
- 3-Fluoro-2-hydroxypyridine (CAS 1547-29-1)
- 5-Fluoro-1H-pyrrole-2-carbaldehyde (CAS 156395-08-3)
- 2-Fluoro-3-hydroxypyridine (CAS 174669-74-0)
- 1-Fluoro-3-oxocyclobutane-1-carbonitrile (CAS 2231677-14-6)
- 2-Fluoro-5-hydroxypyridine (CAS 55758-32-2)
- 3-Fluoro-4-hydroxypyridine (CAS 22282-73-1)
- 3-Fluoro-5-hydroxypyridine (CAS 209328-55-2)
- 1-Fluoro-cyclopentanecarbonitrile (CAS 1447949-40-7)
Recommended Standards
- 4-Fluoropyridin-2-ol (CAS 96530-75-5)
- Uracil-6-d1 (CAS 24897-51-6)
- 4-Amino-2-fluoropyrimidine (CAS 96548-91-3)
- 287484-45-1 6-Amino(~15~N_2_)pyrimidin-2(1H)-one DTXSID00736170 (CAS 287484-45-1)
- Alternariol Monomethyl Ether (CAS 26894-49-5)
- N-[2-Fluoro-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]pyrimidine-5-carboxamide (CAS 2246687-02-3)
- 6-(Pyrrolidin-1-yl)pyridine-3,4-diamine (CAS 1399181-29-3)
- 2-ethyl-2-(2-methylpropyl)pyrrolidine (CAS 1498938-67-2)
- (S)-Methyl 2-amino-2,4-dimethylpentanoate hydrochloride (CAS 873924-30-2)
- 1-thien-2-yl-1,4-dihydro-5H-tetrazol-5-one (CAS 141946-05-6)
- 2-(Dibenzo[b,d]furan-2-yl)ethan-1-amine (CAS 108123-77-9)
- 6-Chloro-3-indolyl beta-D-ribofuranoside (CAS 518033-36-8)
- 3,3',4,4'-TETRABROMODIPHENYL ETHER (CAS 93703-48-1)
- SAMS Peptide (CAS 125911-68-4)
Why CATO?
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