CAS 2321-07-5 Fluorescein - Materials / Alfa Chemistry

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Photonic and Optical Materials

Xanthene Dyes

Fluorescein

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Catalog Number

ACM2321075

Product Name

Fluorescein

Structure

CAS

2321-07-5

Category

Xanthene Dyes

Synonyms

Acid Yellow 73

Description

Alfa Chemistry offers Fluorescein products for various research purposes. Please contact us by email if you do not find the specification you are looking for on this page.

IUPAC Name

3',6'-dihydroxyspiro[2-benzofuran-3,9'-xanthene]-1-one

Molecular Weight

332.31

Molecular Formula

C20H12O5

Canonical SMILES

C1=CC=C2C(=C1)C(=O)OC23C4=C(C=C(C=C4)O)OC5=C3C=CC(=C5)O

InChI

InChI=1S/C20H12O5/c21-11-5-7-15-17(9-11)24-18-10-12(22)6-8-16(18)20(15)14-4-2-1-3-13(14)19(23)25-20/h1-10,21-22H

InChI Key

GNBHRKFJIUUOQI-UHFFFAOYSA-N

Melting Point

315 °C(dec.)

Solubility

Insoluble in water Very soluble in Acetone Insoluble in Chloroform,Benzene,Ether

Appearance

Orange to Amber to Dark red powder to crystal

Application

Applications of xanthene dyes involve optical materials and organic dyes for medical diagnosis research. Several characteristic features of xanthene dyes are large absorption and luminescence, excellent light resistance, low toxicity in-vivo, and relatively high solubility in water.

Color/Form

Red, orthorhombic prisms;Yellowish-red to red powder;Orange-red, crystalline powder

Complexity

522

Covalently-Bonded Unit Count

EC Number

219-031-8

Exact Mass

332.068473g/mol

Features And Benefits

Both cationic and anionic xanthene dyes are known to be efficient fluorescent dyes. Functional groups on the xanthene moiety control their fluorescent colors.

Formal Charge

Heavy Atom Count

Log P

log Kow = 3.35 (est);3.4

MDL Number

MFCD00005050

MeSH Entry Terms

C.I. 45350;Colircusi Fluoresceina;D and C Yellow No. 7;D and C Yellow No. 8;Diofluor;Dipotassium Salt, Fluorescein;Disodium Fluorescein;Disodium Salt, Fluorescein;Fluor I Strip A.T.;Fluor-I-Strip A.T.;Fluorescижine sodique Faure;Fluorescein;Fluorescein Dipotassium Salt;Fluorescein Disodium Salt;Fluorescein Monosodium Salt;Fluorescein Sodium;Fluorescein Sodium, Minims;Fluorescein, Disodium;Fluorescein, Sodium;Fluoresceina, Colircusi;Fluoresceine, Minims;Fluorescite;Fluorets;Ful Glo;Ful-Glo;Funduscein;Minims Fluorescein Sodium;Minims Fluoresceine;Minims Stains;Monosodium Salt, Fluorescein;Optifluor Diba;Sodium Fluorescein;Sodium, Fluorescein;Uranine

Monoisotopic Mass

332.068473g/mol

NSC Number

759114;667256

Other Experimental

Fluorescein is a fluorescent indicator. From pH 4 to pH 4.5, it changes from colorless to green fluorescent.;Henry's Law constant = 8.9X10-17 atm-cu m/mol at 25 °C (est);Hydroxyl radical reaction rate constant = 2.0X10-10 cu cm/molec-sec at 25 °C (est)

Rotatable Bond Count

Storage Conditions

Store at room temperature and dry

UNII

TPY09G7XIR

Vapor Pressure

4.1X10-14 mm Hg at 25 °C (est)

XLogP3

3.4

MSDS

Download MSDS

COA