2-(4,5,6-Trihydroxy-3-oxo-3h-xanthen-9-yl)-benzoic acid CAS 518-41-2
| CAS No. | 518-41-2 |
| Molecular Formula | C20H12O7 |
| Molecular Weight | 364.31 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 2-(4,5,6-Trihydroxy-3-oxo-3h-xanthen-9-yl)-benzoic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
2-(4,5,6-Trihydroxy-3-oxo-3h-xanthen-9-yl)-benzoic acid (CAS 518-41-2), molecular formula C20H12O7 and molecular weight 364.31 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C20H12O7, 2-(4,5,6-Trihydroxy-3-oxo-3h-xanthen-9-yl)-benzoic acid contains a flavonoid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 364.31 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
Physical & Chemical Properties
| Molecular Formula | C20H12O7 |
| Molecular Weight | 364.31 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, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Trihydroxy Standards
- 4-(2,6,7-Trihydroxy-3-oxo-3H-xanthen-9-yl)benzoic acid (CAS 219305-27-8)
- 1,5,8-Trihydroxy-2-(p-tolylamino)anthracene-9,10-dione (CAS 61548-23-0)
- 4,7,9-Trihydroxy-1-(4-hydroxyphenyl)-6H-anthra[1,9-bc]furan-6-one (CAS 1190948-58-3)
- 3,5,7-Trihydroxy-3',4',5'-trimethoxyflavone (CAS 146132-95-8)
- 3,4',5-Trihydroxy-3',6,7-Trimethoxyflavone (CAS 578-71-2)
- 4',5,7-Trihydroxy 3,6,8-trimethoxyflavone (CAS 57393-71-2)
- 3',5,7-Trihydroxy 4',5',6-trimethoxyflavone (CAS 78417-26-2)
- 3,5,7-Trihydroxy-2-(3-hydroxy-2,2-dimethylchroman-6-yl)-4H-chromen-4-one (CAS 197304-01-1)
Recommended Standards
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- N-(4-Fluorophenyl)-5-methyl-1-[3-(trifluoromethyl)phenyl]-1H-1,2,4-triazole-3-carboxamide (CAS 321431-44-1)
- Laminaritetraose (CAS 26212-72-6)
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- Crisaborole impurity 118 (CAS CATO-C4X-2021118)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com