7-Hydroxy-2-oxo-2H-chromene-6-carboxylic acid CAS 833-52-3
| CAS No. | 833-52-3 |
| Molecular Formula | C10H6O5 |
| Molecular Weight | 206.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 7-Hydroxy-2-oxo-2H-chromene-6-carboxylic acid.
7-Hydroxy-2-oxo-2H-chromene-6-carboxylic acid (CAS 833-52-3) is a high-purity analytical reference standard with the molecular formula C10H6O5 and a molecular weight of 206.15 g/mol.
Structurally, 7-Hydroxy-2-oxo-2H-chromene-6-carboxylic acid (C10H6O5) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 206.15 g/mol, it falls into the medium-molecular-weight range. 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), 7-Hydroxy-2-oxo-2H-chromene-6-carboxylic acid 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 | C10H6O5 |
| Molecular Weight | 206.15 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Hydroxy Standards
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Recommended Standards
- 7-Hydroxy-2-oxo-2H-chromene-4-carboxylic acid (CAS 21392-45-0)
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- 6-Nitroisoquinoline-1,3(2H,4H)-dione (CAS 611187-02-1)
- 7-Hydroxy-4-oxo-4H-chromene-3-carboxylic acid (CAS 71345-97-6)
- 2-Nitrofuran-3-carbaldehyde (CAS 113388-41-3)
- Metribuzin-Dik (CAS 56507-37-0)
- 4-(3-Cyclohexyl-5-oxoimidazolidin-1-yl)benzenesulfonamide (CAS 53298-10-5)
- 6-(Methylthio)-2-oxo-2,3-dihydropyrimidine-4-carboxylic acid (CAS 6299-84-9)
- 5,6-Dichloro-2-(methylthio)pyrimidin-4-ol (CAS 36320-45-3)
- 3,3-Dimethyl-1-(methylthio)cyclobutane-1-carboxylic acid (CAS 1497985-18-8)
- 1-(2-Bromoethyl)-1-methylcyclopropane (CAS 1934484-82-8)
- Cyclododecanone (CAS 830-13-7)
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