4-Oxo-4H-pyran-2,6-dicarboxylic acid hydrate CAS 6003-94-7
| CAS No. | 6003-94-7 |
| Molecular Formula | C7H4O6 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-Oxo-4H-pyran-2,6-dicarboxylic acid hydrate is closely related to a carbohydrate-derived structure in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
4-Oxo-4H-pyran-2,6-dicarboxylic acid hydrate (CAS 6003-94-7) is a high-purity analytical reference standard with the molecular formula C7H4O6H2O and a molecular weight of 202.12 g/mol.
The molecular framework of 4-Oxo-4H-pyran-2,6-dicarboxylic acid hydrate (C7H4O6H2O) is characterized by a carbohydrate-derived structure. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), 4-Oxo-4H-pyran-2,6-dicarboxylic 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 | C7H4O6 H2O |
| Molecular Weight | 202.12 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
Recommended Standards
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- 1-(Tert-butoxycarbonyl)-1,2,3,6-tetrahydropyridine-2-carboxylic acid (CAS 90471-44-6)
- 2-Chloro-5-(trifluoromethyl)nicotinaldehyde (CAS 934279-60-4)
- 5α-PREGNAN-17-OL-3, 20-DIONE (CAS 570-59-2)
- 2-Amino-4-phenylbutanoic acid hydrochloride (1:1) 21176-60-3 (CAS 21176-60-3)
- 2-Chloro-6-(piperidin-1-yl)pyrazine (CAS 343856-62-2)
- 1-(4-Hydroxyphenyl)-3-isopropylurea (CAS 23159-73-1)
- Neuropeptide Y (3-36) (human, rat) trifluoroacetate salt (CAS 150138-78-6)
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