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· · COA & SDS available for every product · Same-day shipping on in-stock items 2′,7′-Dichlorofluorescein - Ph.Eur., ACS, indicator , CAS No.76-54-0
GRADE & PURITY Ph.Eur. ? European Pharmacopoeia grade — conforms to Ph.Eur. monographs across EU member states. Use for pharmaceutical work needing European compendial compliance. ACS ? ACS grade — meets American Chemical Society specifications, the analytical benchmark in the US. Use for analytical and QC work needing ACS-defined purity. Indicator ? Indicator grade — characterized dye giving a defined color change at a known transition. Use to signal pH or titration endpoints visually. Synonyms
Dichloro(R)fluorescein | DTXSID8058798 | HY-W040143A | 2',7'-DICHLOROFLUORESCEIN [MI] | FLUORESCEIN-27 | UNII-56NQM5UZT1 | Fluorescein 27 | Spiro[isobenzofuran-1(3H),9'-[9h]xanthen]-3-one,2',7'-dichloro-3',6'-dihydroxy- | 2',7'-Dichlorofluorescein [Fluore
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Why this grade Ph.Eur., ACS, indicator ACS,Indicator,Ph.Eur. for sensitive chromatographic and analytical workflows requiring minimal baseline interference.
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Storage & shipping Room temperature Ships Normal Check lot-specific COA for exact specifications.
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Quality documents SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.
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Literature proof Cited in 13 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
Specifications Synonyms
Dichloro(R)fluorescein | DTXSID8058798 | HY-W040143A | 2',7'-DICHLOROFLUORESCEIN [MI] | FLUORESCEIN-27 | UNII-56NQM5UZT1 | Fluorescein 27 | Spiro[isobenzofuran-1(3H),9'-[9h]xanthen]-3-one,2',7'-dichloro-3',6'-dihydroxy- | 2',7'-Dichlorofluorescein [Fluore
Specifications & Purity
Ph.Eur., ACS, indicator
Grade
ACS, Indicator, Ph.Eur.
Names and Identifiers Canonical Smiles
C1=CC=C2C(=C1)C(=O)OC23C4=CC(=C(C=C4OC5=CC(=C(C=C35)Cl)O)O)Cl
IUPAC Name
2',7'-dichloro-3',6'-dihydroxyspiro[2-benzofuran-3,9'-xanthene]-1-one
InChIKey
VFNKZQNIXUFLBC-UHFFFAOYSA-N
INCHI
1S/C20H10Cl2O5/c21-13-5-11-17(7-15(13)23)26-18-8-16(24)14(22)6-12(18)20(11)10-4-2-1-3-9(10)19(25)27-20/h1-8,23-24H
Isomeric SMILES
C1=CC=C2C(=C1)C(=O)OC23C4=CC(=C(C=C4OC5=CC(=C(C=C35)Cl)O)O)Cl
Reaxys-RN_link_address
https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=58009&ln=
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 → 📊 Datasheet Quick-reference summary of product specifications and applications.
View datasheet → 🔬 Specification Sheet Full quality attributes and acceptance criteria for this grade.
View spec sheet →
Advanced Data Taxonomic Classification Kingdom Organic compounds Superclass Organoheterocyclic compounds Class Benzopyrans Subclass 1-benzopyrans Intermediate Tree Nodes Dibenzopyrans Direct Parent Xanthenes Alternative Parents Diarylethers Phthalides Benzofuranones Isobenzofurans 1-hydroxy-2-unsubstituted benzenoids Aryl chlorides Lactones Carboxylic acid esters Oxacyclic compounds Monocarboxylic acids and derivatives Organochlorides Organic oxides Hydrocarbon derivatives Molecular Framework Aromatic heteropolycyclic compounds Substituents Xanthene - Diaryl ether - Benzofuranone - Phthalide - Isobenzofuranone - Isocoumaran - Isobenzofuran - 1-hydroxy-2-unsubstituted benzenoid - Aryl chloride - Benzenoid - Aryl halide - Carboxylic acid ester - Lactone - Oxacycle - Carboxylic acid derivative - Ether - Monocarboxylic acid or derivatives - Organic oxygen compound - Organooxygen compound - Hydrocarbon derivative - Organochloride - Organic oxide - Organohalogen compound - Aromatic heteropolycyclic compound Description This compound belongs to the class of organic compounds known as xanthenes. These are polycyclic aromatic compounds containing a xanthene moiety, which consists of two benzene rings joined to each other by a pyran ring. External Descriptors 2-benzofurans Data sources 1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61.
3D Structure Mechanisms of Action Certificates（CoA,COO,BSE/TSE and Analysis Chart) Chemical and Physical Properties Flash Point(°C) 12°C Melt Point(°C) 280°C Molecular Weight 401.200 g/mol XLogP3 4.700 Hydrogen Bond Donor Count 2 Hydrogen Bond Acceptor Count 5 Rotatable Bond Count 0 Exact Mass 399.991 Da Monoisotopic Mass 399.991 Da Topological Polar Surface Area 76.000 Ų Heavy Atom Count 27 Formal Charge 0 Complexity 585.000 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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