This product didn't work. i was wondering if we could be a credit or reimbursed?
We have used this in the last (lot# BCCD8787) and it worked but the new one we got (BCCH4248) didn't.
F2456
Fluorescein (free acid)
Dye content 95%, Powder
Fluorescein (free acid)
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| Pack Size | SKU | Availability | Price |
|---|---|---|---|
| 2.5 g | Available to ship TODAYfromMILWAUKEE | $27.40 | |
| 100 g | Available to ship TODAYfromMILWAUKEE | $48.90 | |
| 500 g | Estimated to ship onApril 28, 2026fromMILWAUKEE | $193.00 |
About This Item
Empirical Formula (Hill Notation):
C20H12O5
CAS Number:
Molecular Weight:
332.31
NACRES:
NA.47
PubChem Substance ID:
UNSPSC Code:
12171500
Colour Index Number:
45350:1
EC Number:
219-031-8
MDL number:
Beilstein/REAXYS Number:
94324
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Product Name
Fluorescein (free acid), Dye content 95 %
form
powder
Quality Level
composition
Dye content, 95%
technique(s)
titration: suitable
color
orange to red-brown
mp
320 °C (lit.)
λmax
496 nm
ε (extinction coefficient)
≥12000 at 282-286 nm, ≥39000 at 236-240 nm, ≥70000 at 488-492 nm
application(s)
diagnostic assay manufacturing
hematology
histology
storage temp.
room temp
SMILES string
Oc1ccc2c(Oc3cc(O)ccc3C24OC(=O)c5ccccc45)c1
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
General description
Fluorescein (free acid, CI 45350) is a xanthene dye.[1] Fluorescein (free acid) molecule can be divided into two parts. One part contains xanthene moiety which acts as fluorophore and the other part of the molecule bears benzene moiety which is the fluorescence-controlling moiety.
Application
Fluorescein (free acid) has been used as a staining agent in retinal imaging.[2]
Fluorescein (free acid) is widely used as a fluorescent stain and trace for many living cells and tissue applications. It is also suitable as a marker for the study of motility of bile canaliculi. Some of the clinical applications are evaluating the ocular surface and delineation of brain regions lacking a blood-brain barrier to permit accurate surgical resection of malignant glioma. Fluorescein angiography helps investigate changes in retinal blood supply. Fluorescein also plays a role as a physiological tracer to characterize the salmon′s intestinal permeability (Schep et al., 1998), and for the fluorophotometric measurement of aqueous humor flow. It is widely employed as a quantum yield standard.
1 of 1
This Item | |||
|---|---|---|---|
| technique(s) titration: suitable | technique(s) titration: suitable | technique(s) titration: suitable | technique(s) - |
| color orange to red-brown | color - | color white to faint yellow | color - |
| application(s) diagnostic assay manufacturing | application(s) diagnostic assay manufacturing | application(s) diagnostic assay manufacturing | application(s) diagnostic assay manufacturing |
| form powder | form powder | form powder | form powder |
| storage temp. room temp | storage temp. room temp | storage temp. room temp | storage temp. room temp |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 100 |
signalword
Warning
hcodes
pcodes
Hazard Classifications
Eye Irrit. 2
Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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Global Trade Item Number
| SKU | GTIN |
|---|---|
| F2456-2.5G | 04061835347650 |
| F2456-500G | 04061833612927 |
| F2456-100G | 04061835347643 |