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C0662

Sigma-Aldrich

6-Carboxyfluorescein

~97% purity (HPLC), powder

Synonym(s):

6-FAM, FLUOS

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About This Item

Empirical Formula (Hill Notation):
C21H12O7
CAS Number:
3301-79-9
Molecular Weight:
376.32
Beilstein:
54341
MDL number:
MFCD00036873
UNSPSC Code:
12171500
PubChem Substance ID:
24892266
NACRES:
NA.47

product name

6-Carboxyfluorescein, ≥96% (HPLC)

Quality Level

200

Assay

≥96% (HPLC)

form

powder

color

dark yellow to dark orange

mp

>300 °C (lit.)

solubility

0.1 M NaOH: 9.80-10.20 mg/mL, clear to slightly hazy, orange

λmax

492 nm at 0.1 N in NaOH

fluorescence

λex 492 nm; λem 517 nm (pH 8.0)

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

2-8°C

SMILES string

OC(=O)c1ccc2C(=O)OC3(c4ccc(O)cc4Oc5cc(O)ccc35)c2c1

InChI

1S/C21H12O7/c22-11-2-5-14-17(8-11)27-18-9-12(23)3-6-15(18)21(14)16-7-10(19(24)25)1-4-13(16)20(26)28-21/h1-9,22-23H,(H,24,25)

InChI key

BZTDTCNHAFUJOG-UHFFFAOYSA-N

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Application

6-Carboxyfluorescein has been used to check the plasma membrane integrity in sperm cells.
Fluorescent dye.

Biochem/physiol Actions

6-Carboxyfluorescein diacetate is a membrane permeable compound. It can be hydrolysed by intracellular esterases to form a membrane impermeable bright green fluorescent molecule, 6-carboxyfluorescein.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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