Skip to Content
Merck
All Photos(1)

Documents

70420

Sigma-Aldrich

Naphthofluorescein

suitable for fluorescence

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

Empirical Formula (Hill Notation):
C28H16O5
CAS Number:
61419-02-1
Molecular Weight:
432.42
Beilstein:
61335
MDL number:
MFCD00329026
UNSPSC Code:
12352108
PubChem Substance ID:
57652246
NACRES:
NA.32

form

powder

Quality Level

100

pKa 

7.6

mp

189 °C (dec.) (lit.)

solubility

DMF: soluble
DMSO: soluble
H2O: soluble (pH ≥ 8)

fluorescence

λex 594 nm; λem 663 nm in 0.1 M Tris pH 9.0

suitability

suitable for fluorescence

SMILES string

Oc1ccc2c3Oc4c(ccc5cc(O)ccc45)C6(OC(=O)c7ccccc67)c3ccc2c1

InChI

1S/C28H16O5/c29-17-7-9-19-15(13-17)5-11-23-25(19)32-26-20-10-8-18(30)14-16(20)6-12-24(26)28(23)22-4-2-1-3-21(22)27(31)33-28/h1-14,29-30H

InChI key

IXQIUDNVFVTQLJ-UHFFFAOYSA-N

Application

suitable as pH-indicator

Packaging

Bottomless glass bottle. Contents are inside inserted fused cone.

Other Notes

Reference standard. Long-wavelength pH-dependent spectra

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H315,H319,H335

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

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’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

O.S. Wolfbeis et al.
Mikrochimica Acta, 108, 133-133 (1992)
Julia Baumann et al.
Experimental cell research, 383(2), 111503-111503 (2019-07-25)
Hypoxic blood-brain barrier (BBB) dysfunction is a common feature of CNS diseases however mechanisms underlying barrier disturbance are still largely unknown. This study investigated the role of transforming growth factor β (TGFβ), a cytokine known to induce expression of the
Sabrina Amalfi et al.
Journal of virology, 94(21) (2020-08-17)
The baculovirus Autographa californica multiple nucleopolyhedrovirus is an insect virus with a circular double-stranded DNA genome, which, among other multiple biotechnological applications, is used as an expression vector for gene delivery in mammalian cells. Nevertheless, the nonspecific immune response triggered
Stefanie Norkowski et al.
Cellular and molecular life sciences : CMLS, 75(12), 2273-2289 (2017-12-30)
Effector proteins are key virulence factors of pathogenic bacteria that target and subvert the functions of essential host defense mechanisms. Typically, these proteins are delivered into infected host cells via the type III secretion system (T3SS). Recently, however, several effector

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service