2,7-Dichloro-4,5-bis(1,3,2-dithiarsolan-2-yl)-3,6-dihydroxy-9H-xanthen-9-one CAS 439791-19-2
| CAS No. | 439791-19-2 |
| Molecular Formula | C17H12As2Cl2O4S4 |
| Molecular Weight | 629.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 2,7-Dichloro-4,5-bis(1,3,2-dithiarsolan-2-yl)-3,6-dihydroxy-9H-xanthen-9-one (C17H12As2Cl2O4S4) contains a flavonoid core, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 629.28 g/mol, it falls into the high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies 2,7-Dichloro-4,5-bis(1,3,2-dithiarsolan-2-yl)-3,6-dihydroxy-9H-xanthen-9-one (CAS 439791-19-2), a certified reference material (molecular formula C17H12As2Cl2O4S4, MW 629.28 g/mol) for analytical method development and quality control.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C17H12As2Cl2O4S4 |
| Molecular Weight | 629.28 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 4 |
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