4＇,5＇-Dibromofluorescein CAS 596-03-2
| CAS No. | 596-03-2 |
| Molecular Formula | C20H10Br2O5 |
| Molecular Weight | 490.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4＇,5＇-Dibromofluorescein (C20H10Br2O5) contains a flavonoid core, a hydroxyl group, an ether linkage, bromine 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. 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).
CATO supplies 4＇,5＇-Dibromofluorescein (CAS 596-03-2), a certified reference material (molecular formula C20H10Br2O5, MW 490.10 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.
CATO manufactures 4＇,5＇-Dibromofluorescein 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 | C20H10Br2O5 |
| Molecular Weight | 490.10 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Br-containing |
Related Dibromofluorescein Standards
Recommended Standards
- 2-(4,5-Dibromo-6-hydroxy-3-oxo-3H-xanthen-9-yl)benzoic acid (CAS 5350-25-4)
- Vinyl perfluorononanoate (CAS 54640-64-1)
- 5,6-Dibromo-3',6'-dihydroxy-3h-spiro[isobenzofuran-1,9'-xanthen]-3-one (CAS 13232-65-0)
- Gold(III) sulfide (CAS 1303-61-3)
- Methyl 3-Methylisoxazole-4-carboxylate (CAS 92234-50-9)
- N-(5-Ethyl-1,3,4-thiadiazol-2-yl)cyclopropanecarboxamide (CAS 354542-00-0)
- Dibac4(3) (CAS 70363-83-6)
- 1-(2,4-Dichlorophenyl)-3-phenylpropan-1-one (CAS 898788-78-8)
- (2-Bromothiazol-5-yl)(piperidin-1-yl)methanone (CAS 1290136-85-4)
- [(2S,5R)-5-(aminomethyl)oxolan-2-yl]methanol (CAS 1820574-16-0)
- Methyl (R)-2-(((benzyloxy)carbonyl)amino)-3-iodopropanoate (CAS 56877-38-4)
- 3-(3-Bromophenyl)furan (CAS 918625-95-3)
- n-(4-Aminophenyl)-2-[bis(2-hydroxyethyl)amino]-n-methylacetamide (CAS 652139-60-1)
- Semaglutide Impurity 133 (CAS CATO-C4X-2226133)
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