Umbelliferone
Structural formula | |||||||||||||||||||
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General | |||||||||||||||||||
Surname | Umbelliferone | ||||||||||||||||||
other names |
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Molecular formula | C 9 H 6 O 3 | ||||||||||||||||||
Brief description |
yellow needles |
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properties | |||||||||||||||||||
Molar mass | 162.15 g · mol -1 | ||||||||||||||||||
Physical state |
firmly |
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Melting point |
226-229 ° C (dec.) |
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solubility |
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safety instructions | |||||||||||||||||||
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As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . |
Umbelliferone (also: Hydrangin ) is a hydroxy - derivative of coumarin and a natural substance.
Occurrence
Umbelliferone is often found in plants of the umbelliferae (Apiaceae), e.g. B. Lovage before. In UV light it shows a clear blue fluorescence .
use
Umbelliferone serves as a pH indicator in the range from 6.5 to 8.9, in the form of a 0.1% aqueous solution as fluorescence - an indicator for the detection of calcium - and copper ions.
It is used in sunscreens and as an optical brightener for textiles, and it is also used as a laser dye . Synthetic 7- O- glycosides are used for the fluorimetric determination of glycosidases .
synthesis
Umbelliferone can be produced from resorcinol and malic acid using the Pechmann reaction .
Individual evidence
- ↑ a b c d Entry on umbelliferone. In: Römpp Online . Georg Thieme Verlag, accessed on November 14, 2014.
- ↑ a b c d data sheet umbelliferone (PDF) from Merck , accessed on December 25, 2019.
- ↑ a b P. Drosky et al. The optical brighteners Fraxin and Aesculin ChiuZ 2014, 48, pp. 450–459