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Fluorescein-PEG4-Acid - ≥96% , CAS No.1807518-76-8
AVAILABLE TO ORDER
GRADE & PURITY ≥96%
Storage
Store at -20°C
Shipped In
Ice chest + Ice pads
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Why this grade
≥96% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.
Storage & shipping
Store at -20°C Ships Ice chest + Ice pads Check lot-specific COA for exact specifications.
Quality documents
SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.
Literature proof
Cited in 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
Overview
Fluorescein-PEG4-Acid is a xanthene dye with excitation/emmission maximum 494/517 nm and a free terminal carboxyl acid. Terminal carboxylic acid can react with primary amine groups in the presence of of activators (e.g. EDC, or DCC) to form a stable amide bond. It be used as quantum yield standard. Hydophilic PEG spacer increases solubility in aqueous media and reduces steric hindrance during binding.
Specifications
Specifications & Purity
≥96%
Storage
Store at -20°C
Shipped In
Ice chest + Ice pads
This product requires cold chain shipping. Ground and other economy services are not available.
Purity
≥96%
Names and Identifiers
| Canonical Smiles | C1=CC2=C(C=C1NC(=S)NCCOCCOCCOCCOCCC(=O)O)C(=O)OC23C4=C(C=C(C=C4)O)OC5=C3C=CC(=C5)O |
|---|---|
| Isomeric SMILES | C1=CC2=C(C=C1NC(=S)NCCOCCOCCOCCOCCC(=O)O)C(=O)OC23C4=C(C=C(C=C4)O)OC5=C3C=CC(=C5)O |
| PubChem CID | 91757936 |
| Molecular Weight | 654.7 |
Documentation
📋 Safety Data Sheet (SDS)
Comprehensive hazard, handling, storage, and regulatory compliance document.
Download SDS →✅ Certificate of Analysis (COA)
Lot-specific quality data. Enter your lot number to retrieve the exact COA.
Look up COA →🔬 Specification Sheet
Full quality attributes and acceptance criteria for this grade.
View spec sheet →Advanced Data
Certificates（CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:
Chemical and Physical Properties
| Solubility | Solubility in Water, DMSO, DMF, DCM |
|---|---|
| Molecular Weight | 654.700 g/mol |
| XLogP3 | 1.900 |
| Hydrogen Bond Donor Count | 5 |
| Hydrogen Bond Acceptor Count | 12 |
| Rotatable Bond Count | 16 |
| Exact Mass | 654.188 Da |
| Monoisotopic Mass | 654.188 Da |
| Topological Polar Surface Area | 206.000 Ų |
| Heavy Atom Count | 46 |
| Formal Charge | 0 |
| Complexity | 995.000 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| The total count of all stereochemical bonds | 0 |
| Covalently-Bonded Unit Count | 1 |
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