93979
Umbelliferone
suitable for fluorescence indicator, ≥98.0% (HPLC)
Synonym(s):
7-Hydroxy-2H-1-benzopyran-2-one, 7-Hydroxycoumarin
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About This Item
Empirical Formula (Hill Notation):
C9H6O3
CAS Number:
Molecular Weight:
162.14
UNSPSC Code:
12171500
NACRES:
NA.32
PubChem Substance ID:
EC Number:
202-240-3
Beilstein/REAXYS Number:
127683
MDL number:
Assay:
≥98.0% (HPLC)
Form:
crystals
Quality Level
assay
≥98.0% (HPLC)
form
crystals
mp
230 °C (dec.) (lit.), 230-234 °C
solubility
dioxane: soluble, ethanol: soluble
fluorescence
λex 325 nm; λem 452 nm in 0.1 M citrate pH 3.0
suitability
suitable for fluorescence indicator
SMILES string
Oc1ccc2C=CC(=O)Oc2c1
InChI
1S/C9H6O3/c10-7-3-1-6-2-4-9(11)12-8(6)5-7/h1-5,10H
InChI key
ORHBXUUXSCNDEV-UHFFFAOYSA-N
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Storage Class
11 - Combustible Solids
wgk
WGK 3
ppe
dust mask type N95 (US), Eyeshields, Gloves
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Kalyan K Sadhu et al.
Organic & biomolecular chemistry, 11(4), 563-568 (2012-10-13)
The design and synthesis of molecular probes competent for pH signaling within or beyond a certain range is a complicated matter. Herein a new mechanism for ''OFF-ON-OFF'' absorbance and fluorescence intensities vs. pH behaviour is described. The probe design is
Hiromu Kashida et al.
Bioorganic & medicinal chemistry, 20(14), 4310-4315 (2012-06-19)
In this study, we synthesized a simple but efficient quencher-free molecular beacon tethering 7-hydroxycoumarin on D-threoninol based on its pK(a) change. The pK(a) of 7-hydroxycoumarin in a single strand was determined as 8.8, whereas that intercalated in the duplex was
Seitaro Matsumoto et al.
Phytochemistry, 74, 49-57 (2011-12-16)
Ortho-hydroxylation of cinnamates is a key step in coumarin biosynthesis in plants. Ortho-hydroxylated cinnamates undergo trans/cis isomerization of the side-chain and then lactonization to form coumarins. Sweet potato [Ipomoea batatas (L.) Lam.] accumulates umbelliferone and scopoletin after biotic and abiotic