46950
Fluorescein 5(6)-isothiocyanate
BioReagent, suitable for fluorescence, mixture of 2 components, ≥90% (HPLC)
Synonym(s):
FITC, Fluorescein isothiocyanate
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About This Item
Empirical Formula (Hill Notation):
C21H11NO5S
CAS Number:
Molecular Weight:
389.38
Beilstein:
1407295
EC Number:
MDL number:
UNSPSC Code:
12171500
PubChem Substance ID:
NACRES:
NA.32
Recommended Products
Quality Level
product line
BioReagent
Assay
≥90% (HPLC)
fluorescence
λex 492 nm; λem 518 nm in 0.1 M phosphate pH 8.0
suitability
suitable for fluorescence
storage temp.
−20°C
SMILES string
Oc1ccc2c(Oc3cc(O)ccc3C24OC(=O)c5cc(ccc45)N=C=S)c1
InChI
1S/C21H11NO5S/c23-12-2-5-16-18(8-12)26-19-9-13(24)3-6-17(19)21(16)15-4-1-11(22-10-28)7-14(15)20(25)27-21/h1-9,23-24H
InChI key
MHMNJMPURVTYEJ-UHFFFAOYSA-N
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General description
Fluorescein 5(6)-isothiocyanate, also known as FITC, is a weakly acidic hydroxyxanthene whose overall size is small, with both carboxylic acid and isothiocyanate substituents on the pendant phenyl ring. The dye has a moderately sized, nonplanar aromatic system. The isothiocyanate group reacts with nucleophilic substituents (e.g. amino, hydroxyl, thiol) of biomolecules to be attached as a fluorescent label. The maximum emission of the dye is at 519nm in the same solvent.
Application
Fluorescein 5(6)-isothiocyanate (FITC) labelled molecules are used in non-microscopic immunoassays and physiological tracing experiments. FITC is widely used in flow cytometry experiments for staining proteins, nuclei, and subnuclear particles. White blood cells (WBCs) are marked with FITC to study their response toward a chemoattractant, eventually being measured.
For fluorescent labeling of proteins (e.g. immunofluorescence); H Protein labeling for gel chromatography
Packaging
Bottomless glass bottle. Contents are inside inserted fused cone.
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
Certificates of Analysis (COA)
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