5-Carboxy-fluorescein CAS 76823-03-5
Purity >95%In StockPharmaceutical Standards
| CAS No. | 76823-03-5 |
| Molecular Formula | C21H12O7 |
| Molecular Weight | 376.32 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 5-Carboxy-fluorescein (CAS 76823-03-5), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C21H12O7. Molecular weight: 376.32 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C21H12O7 |
| Molecular Weight | 376.32 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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1978 |
Related Carboxy Standards
- 6-Carboxy-fluorescein (CAS 3301-79-9)
- Carboxy-PEG5-sulfonic acid (CAS 1817735-38-8)
- 3-(5-Carboxy-2,4-dichlorobenzenesulfonyl)-3-azabicyclo[3.1.0]hexane-2-carboxylic acid (CAS 1007930-95-1)
- 5-(3-Carboxy-4-chlorobenzenesulfonamido)-2-hydroxybenzoic acid (CAS 518053-68-4)
- 5'-Carboxy Meloxicam (CAS 130262-93-0)
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- rac 5-Carboxy Tolterodine-d14 (CAS 1189681-84-2)
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Recommended Standards
- CI Disperse Blue 54 (CAS 20241-76-3)
- Uridine Impurity 4 (CAS 198267-18-4)
- Gallium selenide (CAS 12024-24-7)
- 1-Amino-2,2-dimethyl-1-(3-pyridyl)propane Hydrochloride (CAS 207850-66-6)
- 2-Chloro-1-(8-chloro-6-(trifluoromethyl)imidazo[1,2-a]pyridin-3-yl)-2,2-difluoroethan-1-one (CAS 1823183-01-2)
- 2-Isopropylpyrazolo[1,5-a]pyrimidin-6-amine hydrochloride (CAS 1707358-53-9)
- (S)-Fmoc-2-amino-5-[(N'-Pbf-N''-Boc-amino)-guanidino]-pentanoic acid, 95% (CAS 1060769-54-1)
- 3-(3'-Methoxy-[1,1'-biphenyl]-4-yl)propanoic acid (CAS 893641-26-4)
- Ethyl 2-Acetamido-2-ethoxycarbonyl-3-(2-ethyl-5-methyl-3-oxoisoxazolin-4-yl) propionate (CAS 127020-33-1)
- Peptide-GMF (CAS CATO-CPTD788469)
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