Fluorescein-5-EX, succinimidyl ester, 90% CAS 123761-26-2
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 123761-26-2 |
| Molecular Formula | C29H22N2O10S |
| Molecular Weight | 590.56 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Fluorescein-5-EX, succinimidyl ester, 90% (CAS 123761-26-2) is a pharmaceutical standards certified reference material from CATO. Molecular formula: C29H22N2O10S. Molecular weight: 590.56 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C29H22N2O10S |
| Molecular Weight | 590.56 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 20.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1992 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Fluorescein Standards
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Recommended Standards
- N-[3,5-Bis(trifluoromethyl)phenyl]-N'-[(1S)-1-[(diphenylphosphino)methyl]-2-phenylethyl]thiourea (CAS 1223441-20-0)
- Sitagliptin Impurity 106 (CAS CATO-C4X-1144106)
- tert-Butyl (26-bromo-3,6,9,12,15,18,21,24-octaoxahexacosyl)(methyl)carbamate (CAS 2874309-90-5)
- 6-Bromo-1-chloro-7-methoxyisoquinoline (CAS 758710-74-6)
- 2-Amino-3,5-difluorobenzonitrile (CAS 126674-94-0)
- 4-Ethoxy-2-methylpyrimidine (CAS 24903-66-0)
- N-(2,5-Dimethylphenyl)-4,7,7-trimethyl-2,3-dioxobicyclo[2.2.1]heptane-1-carboxamide (CAS 622356-07-4)
- 2-(Bromomethyl)benzo[d]oxazole-4-acrylic acid (CAS 1803425-47-9)
- 4-Amino-3-hydroxy-7-nitronaphthalene-1-sulfonic acid (CAS 6259-63-8)
- Semaglutide Impurity 191 (CAS CATO-C4X-2226191)
Why CATO?
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