Fluorescein Impurity 3 CAS 1428447-91-9
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 1428447-91-9 |
| Molecular Formula | C20H14O6 |
| Molecular Weight | 350.32 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Order Fluorescein Impurity 3 (CAS 1428447-91-9) pharmacopoeial impurity standards reference standard from CATO: ISO 17034 accredited producer, 130,000+ catalog items in stock. Molecular formula: C20H14O6. Molecular weight: 350.32 g/mol. COA included with every batch.
Physical & Chemical Properties
| Molecular Formula | C20H14O6 |
| Molecular Weight | 350.32 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
Related Fluorescein Standards
- Fluorescein Methyl ester (CAS 70672-06-9)
- Fluorescein Impurity 7 (CAS CATO-C4X-29007)
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- Fluorescein Impurity 6 (CAS 2321-08-6)
- Fluorescein (CAS 2321-07-5)
- Fluorescein Impurity 5 (CAS 7262-41-1)
- Fluorescein Impurity 15 (CAS 869811-23-4)
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Recommended Standards
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- 5-Chloro-2-(chloromethyl)-3-(trifluoromethyl)pyridine hydrochloride (CAS 1956310-31-8)
- N-(naphthalen-1-yl)-3-nitrobenzenesulfonamide (CAS 419559-79-8)
- 4-{[3-chloro-5-(trifluoromethyl)pyridin-2-yl](cyano)methyl}phenyl acetate (CAS 338410-39-2)
- 2-Fluoro-5-(trifluoromethyl)cinnamic acid (CAS 247113-91-3)
- (9-D-Asp) Semaglutide X Sodium salt (CAS CATO-CPTD788617)
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 13829788188 / jacky.chen@cato-chem.com