5(6)-Carboxy-2′,7′-dichlorofluorescein diacetate CAS 127770-45-0
| CAS No. | 127770-45-0 |
| Molecular Formula | 2*C25H32Cl2O9 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 547.42 g/mol gives 5(6)-Carboxy-2′,7′-dichlorofluorescein diacetate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
5(6)-Carboxy-2′,7′-dichlorofluorescein diacetate (CAS 127770-45-0) is a high-purity analytical reference standard with the molecular formula C25H32Cl2O9 and a molecular weight of 547.42 g/mol.
5(6)-Carboxy-2′,7′-dichlorofluorescein diacetate (C25H32Cl2O9) contains a flavonoid core, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 5(6)-Carboxy-2′,7′-dichlorofluorescein diacetate 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.
Physical & Chemical Properties
| Molecular Formula | 2*C25H32Cl2O9 |
| Molecular Weight | 547.42 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Halogen Content | Cl-containing |
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