4-Hydroxy-5-methoxypicolinic acid hydrate CAS 1609406-52-1
| CAS No. | 1609406-52-1 |
| Molecular Formula | C7H7NO4 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Hydroxy-5-methoxypicolinic acid hydrate (CAS 1609406-52-1), molecular formula C7H7NO4H2O and molecular weight 187.15 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C7H7NO4H2O, 4-Hydroxy-5-methoxypicolinic acid hydrate contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 187.15 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).
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.
As a certified reference material (CRM), 4-Hydroxy-5-methoxypicolinic acid hydrate 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 | C7H7NO4 H2O |
| Molecular Weight | 187.15 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Nitrogen Atoms | 1 |
Related Hydroxy Standards
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Recommended Standards
- Benzyl ((3S,4R)-3-fluoropiperidin-4-yl)carbamate hydrochloride (CAS 1034057-93-6)
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- 2-(5-Amino-2-methylphenyl)tetrahydro-1H-pyrrolo[1,2-c]imidazole-1,3(2H)-dione (CAS 1248547-52-5)
- Methyl (S,10E,12Z)-9-hydroxyoctadeca-10,12-dienoate (CAS 10075-07-7)
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- 2,4-Dichloro-1-(dichloromethyl)benzene (CAS 134-25-8)
- N-(3-Chlorophenyl)-3,5-difluorobenzenesulfonamide (CAS 1089622-73-0)
- tert-Butyl 2-(6-chloropyridin-3-yl)pyrrolidine-1-carboxylate (CAS 1352534-35-0)
- tert-Butyl (2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-5-(trifluoromethyl)phenyl)carbamate (CAS 1186637-37-5)
- Insulin degludec (CAS 844439-96-9)
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