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Sigma-Aldrich

7-Hydroxycoumarin-3-carboxylic acid

suitable for fluorescence, ≥98.0% (capillary electrophoresis)

Synonym(s):

Umbelliferone-3-carboxylic acid

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About This Item

Empirical Formula (Hill Notation):
C10H6O5
CAS Number:
779-27-1
Molecular Weight:
206.15
Beilstein:
384141
MDL number:
MFCD00017491
UNSPSC Code:
12352106
PubChem Substance ID:
57651515
NACRES:
NA.32

Assay

≥98.0% (capillary electrophoresis)

form

solid

pKa 

7.04

mp

261 °C (lit.)

solubility

DMF: soluble
DMSO: soluble
alcohols: soluble

fluorescence

λex 342 nm; λem 447 nm (pH 4.0)
λex 386 nm; λem 448 nm in 0.1 M Tris pH 9.0

suitability

suitable for fluorescence

SMILES string

OC(=O)C1=Cc2ccc(O)cc2OC1=O

InChI

1S/C10H6O5/c11-6-2-1-5-3-7(9(12)13)10(14)15-8(5)4-6/h1-4,11H,(H,12,13)

InChI key

LKLWLDOUZJEHDY-UHFFFAOYSA-N

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Application

7-Hydroxycoumarin-3-carboxylic acid (7-OHCCA) is used as a fluorogenic substrate for glycosyltransferase assays. 7-OHCCA may be used as a non-cinnamate-class substrate analog to study 4-hydroxycinnamate decarboxylase (4-HCD)-inducing activity in Klebsiella oxytoca cells. It is suitable as a pH indicator.

Packaging

Bottomless glass bottle. Contents are inside inserted fused cone.

Other Notes

Immobilized on a support to give a pH sensor

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’.

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Yuichiro Hori et al.
Journal of the American Chemical Society, 131(46), 16610-16611 (2009-11-03)
Protein labeling provides significant information about protein function. In this research, we developed a novel protein labeling technique by utilizing photoactive yellow protein (PYP). PYP is a small protein (14 kDa) derived from purple bacteria and binds to 7-hydroxycoumarin-3-carboxylic acid
Y Hashidoko et al.
Bioscience, biotechnology, and biochemistry, 65(12), 2604-2612 (2002-02-06)
The 4-hydroxycinnamate decarboxylase (4-HCD)-inducing activity of several substrate analogs toward Klebsiella oxytoca was investigated. Four E-cinnamate-class compounds, E-4-hydroxycinnamic acid (1), caffeic acid (2), ferulic acid (3) and E-2,4-dihydroxycinnamic acid (4), all of which were accepted as substrates, all of which
H. Offenbacher et al.
Sens. Actuators, 9, 73-73 (1986)
K Higai et al.
Biological & pharmaceutical bulletin, 22(4), 333-338 (1999-05-18)
We developed a novel fluorometric assay method for the measurement of glycosyltransferase activities using mono- and di-saccharides aminated and tagged with 7-hydroxycoumarin-3-carboxylic acid (coumarin) as substrates, N-acetylglucosamine (GlcNAc)-coumarin for beta1,4-galactosyltransferase from bovine milk and Gal beta1-4GlcNAc-coumarin for alpha2,3- and alpha2,6-sialyltransferases
Hang Wang et al.
European journal of mass spectrometry (Chichester, England), 22(1), 19-29 (2016-02-11)
Mass spectrometry has been applied to the targeted analysis of commonly used additives (such as Irganox 1010, Irganox 1076, Irgafos 168, etc.) in plastic materials, but a fast and straightforward method for the non-targeted identification and quantification of unusual or
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