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70420

Sigma-Aldrich

Naphthofluorescein

suitable for fluorescence

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100 MG
CN¥913.80
500 MG
CN¥3,285.41

CN¥913.80

Estimated to ship onApril 23, 2025Details

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100 MG
CN¥913.80
500 MG
CN¥3,285.41

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

CN¥913.80

Estimated to ship onApril 23, 2025Details

Request a Bulk Order

form

powder

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

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This Item
469353679946943
Naphthofluorescein suitable for fluorescence

70420

Naphthofluorescein

6-[Fluorescein-5(6)-carboxamido]hexanoic acid suitable for fluorescence, ≥90% (HPCE)

46935

6-[Fluorescein-5(6)-carboxamido]hexanoic acid

7-(Diethylamino)coumarin-3-carboxylic acid BioReagent, suitable for fluorescence, ≥98.0% (HPCE)

36799

7-(Diethylamino)coumarin-3-carboxylic acid

Fluorescein dilaurate suitable for fluorescence, ≥97.0% (HPCE)

46943

Fluorescein dilaurate

fluorescence

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

fluorescence

λex 491 nm; λem 515 nm in 0.1 M Tris pH 9.0

fluorescence

λex 409 nm; λem 473 nm in 0.1 M Tris pH 9.0

fluorescence

λex 490 nm; λem 514 nm in 0.1 M Tris pH 8.0 (esterase)

form

powder

form

solid

form

-

form

powder

solubility

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

solubility

DMF: soluble, DMSO: soluble

solubility

DMF: soluble, DMSO: soluble

solubility

ethanol: soluble

Quality Level

100

Quality Level

200

Quality Level

200

Quality Level

100

mp

189 °C (dec.) (lit.)

mp

-

mp

222-224 °C (dec.) (lit.)

mp

-

Application

suitable as pH-indicator

Packaging

Bottomless glass bottle. Contents are inside inserted fused cone.

Other Notes

Reference standard. Long-wavelength pH-dependent spectra[1]

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
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