5-Carboxyfluorescein Diacetate CAS 79955-27-4
| CAS No. | 79955-27-4 |
| Molecular Formula | 2*C25H16O9 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 5-Carboxyfluorescein 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.
CATO supplies 5-Carboxyfluorescein Diacetate (CAS 79955-27-4), a certified reference material (molecular formula C25H16O9, MW 460.39 g/mol) for analytical method development and quality control.
The molecular framework of 5-Carboxyfluorescein Diacetate (C25H16O9) is characterized by a flavonoid core, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
Physical & Chemical Properties
| Molecular Formula | 2*C25H16O9 |
| Molecular Weight | 460.39 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 18.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1979 |
Related Carboxyfluorescein Standards
- 5(6)-Carboxyfluorescein N-Hydrosuccinimide ester (CAS 117548-22-8)
- (6)-Carboxyfluorescein diacetate (CAS 124387-19-5)
- 6-Carboxyfluorescein 3,6-Diacetate N-Succinimidyl Ester (CAS 150206-15-8)
- 5(6)-Carboxyfluorescein Diisobutyrate (CAS 287111-44-8)
- 3348-03-6 6-Carboxyfluorescein diacetate Spiro(isobenzofuran-1(3H),9'-(9H)xanthene)-6-carboxylic acid, 3',6'-bis(acetyloxy)-3-oxo- Spiro(phthalan-1,9'-xanthene)-6-carboxylic acid, 3',6'-dihydroxy-3-oxo-, diacetate 6-Carboxy-3',6'-diacetylfluorescein 6-Cfda (CAS 3348-03-6)
- 6-Carboxyfluorescein 3,6-Dipivaloyl N-(1-Methylethyl)-2-propanamine (CAS 847569-43-1)
- 5-Carboxyfluorescein-N-hydroxysuccinimide Ester (CAS 92557-80-7)
- 6-Carboxyfluorescein N-succinimidyl ester (CAS 92557-81-8)
Recommended Standards
- 2,4-Dimethoxy-6-methyl-1,3,5-triazine (CAS 4000-78-6)
- (1-(6-Ethoxypyrimidin-4-yl)piperidin-3-yl)methanol (CAS 1404192-13-7)
- Tert-butyl (3-(2-hydroxyethyl)oxetan-3-yl)carbamate (CAS 1416323-05-1)
- 4-(4-Chlorophenyl)-2-methyl-2,4,5,6-tetrahydropyrrolo[2,3-c]pyrazol-3-ol (CAS 1710195-21-3)
- 5-Allyl-2-chloro-3-fluoroisonicotinaldehyde (CAS 1236769-86-0)
- 3-Ethyl 7-methyl 4-(dimethylamino)quinoline-3,7-dicarboxylate (CAS 1171523-92-4)
- 1-(3-Bromo-5-(trifluoromethyl)phenyl)-4-methylpiperidine (CAS 1704068-87-0)
- (R)-2-(2-Bromophenyl)-2-((tert-butoxycarbonyl)amino)acetic acid (CAS 1228565-79-4)
- 1,3,5-Tri(9H-carbazol-9-yl)benzene (purified by sublimation) (CAS 148044-07-9)
- Semaglutide impurity 84 (CAS CATO-C4X-222684)
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