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70450

Sigma-Aldrich

2-Naphthol

fluorescence indicator, ≥99.0%

Synonym(s):
β-Naphthol, 2-Hydroxynaphthalene
Linear Formula:
C10H7OH
CAS Number:
Molecular Weight:
144.17
Beilstein:
742134
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
MA.02

Quality Level

grade

fluorescence indicator

vapor density

4.97 (vs air)

vapor pressure

10 mmHg ( 145.5 °C)

assay

≥99.0% (GC)
≥99.0%

form

solid

impurities

≤0.5% 1-naphthol

ign. residue

≤0.05%

bp

285-286 °C (lit.)

mp

120-122 °C (lit.)
121-122 °C

fluorescence

λex 320 nm; λem 410 nm in 0.1 M NaOH

SMILES string

Oc1ccc2ccccc2c1

InChI

1S/C10H8O/c11-10-6-5-8-3-1-2-4-9(8)7-10/h1-7,11H

InChI key

JWAZRIHNYRIHIV-UHFFFAOYSA-N

Gene Information

human ... CYP1A2(1544)

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General description

2-Naphthol (2OH) is a hydroxyarene molecule, which when electronically excited forms strong acid. Excited 2OH dissociates only in water. It has a slight phenolic odor. It is incompatible with strong oxidizing agents, strong bases, acid chlorides and acid anhydrides. It is one of the most commonly used fluorescence dye.

Application

2OH has been used as a fluorescence indicator which changes fluorescence intensity at varied temperatures when embedded in aqueous Poly(vinly alcohol)/borax gel networks.

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