Fluorescein Impurity 5 CAS 7262-41-1
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 7262-41-1 |
| Molecular Formula | C22H14O6 |
| Molecular Weight | 374.34 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
High-purity Fluorescein Impurity 5 (CAS 7262-41-1) pharmacopoeial impurity standards reference standard. Molecular formula: C22H14O6. Molecular weight: 374.34 g/mol. Produced by CATO, one of China's leading reference material manufacturers, with COA documentation and global shipping.
Physical & Chemical Properties
| Molecular Formula | C22H14O6 |
| Molecular Weight | 374.34 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| 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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1959 |
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Recommended Standards
- 5,2'-dihydroxy-6,7,8,6'-tetramethoxyflavone 5-hydroxy-2-(2-hydroxy-6-methoxy-phenyl)-6,7,8-trimethoxy-chromen-4-one 5-hydroxy-2-(2-hydroxy-6-methoxyphenyl)-6,7,8-trimethoxy-4H-1-benzopyran-4-one 55084-08-7 CHEBI:9061 neobaicalein scullcapflavone II skullcapflavone II (CAS 55084-08-7)
- Vitexicarpin (CAS 479-91-4)
- Thalidomide-5'-O-C4-acid (CAS 2226301-24-0)
- Ceritinib Impurity 19 (CAS 771555-72-7)
- Ornidazole impurity 50 (CAS CATO-C4X-133150)
- (3-Chloro-4-iodophenyl)methanamine (CAS 687623-52-5)
- 3-((2,5-Dimethoxyphenyl)sulfonyl)-2H-chromen-2-one (CAS 866346-80-7)
- Fesoterodine Impurity O (CAS 250214-69-8)
- 1-Fluoro-2-methoxy-3-vinylbenzene (CAS 499235-07-3)
- Des-Leu14-Tirzepatide (CAS CATO-CPTD788959)
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