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Biochemicals and Reagents > Fluorescent Probes, Labels, Particles and Stains > Detection
Fluorescent Indicators and Probes > pH Sensitive Probes and Indicators > pH Indicators for Spectroscopy

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23724

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3-(5-Chloro-2-benzoxazolyl)-4-cyanoumbelliferone

BioChemika, for fluorescence, ≥95% (TLC)


Synonym:	3-(5-Chloro-2-benzoxazolyl)-4-cyano-7-hydroxycoumarin
CAS Number:	97477-81-1
Linear Formula:	C₁₇H₇ClN₂O₄
Molecular Weight:	338.70
Beilstein Registry Number:	5992861
MDL number:	MFCD00674504
PubChem Substance ID:	24854229

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Description

Application	suitable as pH-indicator
Other Notes	Longwave absorbing and fluorescing pH indicator, and enzyme substrate ref. standard¹

Properties

grade	for fluorescence
product line	BioChemika
assay	≥95% (TLC)
fluorescence	λ_ex 497 nm; λ_em 577 nm in 0.1 M Tris pH 9.0
pKa	6.0
mp	291-294 °C(lit.)
solubility	DMF: soluble
	DMSO: soluble
	methanol: soluble

Safety

Personal Protective Equipment	Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter
Safety Statements	22-24/25
WGK Germany	3

References

Cited Reference

1. O.S. Wolfbeis et al. Bull. Chem. Soc. Jpn. 58, 731, (1985)

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