9H-xanthene-2-carboxylic acid CAS 40274-68-8
| CAS No. | 40274-68-8 |
| Molecular Formula | C14H10O3 |
| Molecular Weight | 226.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 9H-xanthene-2-carboxylic acid is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
9H-xanthene-2-carboxylic acid (CAS 40274-68-8) is a high-purity analytical reference standard with the molecular formula C14H10O3 and a molecular weight of 226.23 g/mol.
Based on its molecular formula C14H10O3, 9H-xanthene-2-carboxylic acid contains a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 226.23 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), 9H-xanthene-2-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 | C14H10O3 |
| Molecular Weight | 226.23 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1968 |
Related H Standards
- 9H-xanthene-9-carboxamide (CAS 5813-90-1)
- 9H-Xanthene-3,6-diol (CAS 102914-73-8)
- 9H-Xanthene-9-thione (CAS 492-21-7)
- 9H-xanthene-3,6-diamine (CAS 199116-57-9)
- 9H-xanthene-9-carbohydrazide (CAS 5484-20-8)
- 9H-xanthene-9-carbaldehyde (CAS 72240-47-2)
- 9H-Xanthene-9-carbonyl chloride (CAS 26454-53-5)
- 27393-39-1 9H-xanthene-1,3,6,8-tetrol DTXSID40319749 (CAS 27393-39-1)
Recommended Standards
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- 9-(m-Tolyl)-3H-purin-6(9H)-one (CAS 73941-32-9)
- 9-Methyl-3-nitro-9H-carbazole (CAS 61166-05-0)
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