Coumarin

Coumarin structural formula

CAS Number91-64-5
Molecular FormulaC9H6O2
Molecular Weight146.146
InChI KeyZYGHJZDHTFUPRJ-UHFFFAOYSA-N
LogP1.39
Synonyms
  • Coumarin
  • 2H-1-Benzopyran-2-one
  • 91-64-5
  • 2H-1-Benzopyran-2-one
  • Chromen-2-one
  • 5-17-10-00143
  • 1,2-Benzopyrone
  • 2-Propenoic acid, 3-(2-hydroxyphenyl)-, ?-lactone
  • 5,6-Benzo-2-pyrone
  • Benzo-?-pyrone
  • cis-o-Coumarinic acid lactone
  • Coumarine
  • Coumarinic anhydride
  • Cumarin
  • cumarina
  • NSC 8774
  • o-Hydroxycinnamic acid lactone
  • Tonka bean camphor
  • 2H-1-Benzopyran, 2-oxo-
  • 2H-Benzo(b)pyran-2-one
  • Benzo-alpha-pyrone
  • 5,6-Benzo-alpha-pyrone
  • BRN 0383644
  • Caswell No. 259C
  • Cinnamic acid, o-hydroxy-, delta-lactone
  • cis-o-Coumaric acid anhydride
  • o-Coumaric acid lactone
  • Coumarinic lactone
  • EINECS 202-086-7
  • EPA Pesticide Chemical Code 127301
  • 3-(2-Hydroxyphenyl)-2-propenoic delta-lactone
  • NCI C07103
  • 2-Propenoic acid, 3-(2-hydroxyphenyl)-delta-lactone
  • UNII-A4VZ22K1WT
  • 1, 2-Benzopyrone
  • 2-Oxo-1,2-benzopyran
  • 2-Oxo-2H-1-Benzopyran
  • 2-Propenoic acid, 3-(2-hydroxyphenyl)-, delta-lactone
  • 2H-Chromen-2-one
  • 2H-Chromen-2-one (ACD/Name 4.0)
  • 2H-benzo[b]pyran-2-one
  • Benzo-alpha-pyrone
  • Kumarin
  • O-Hydroxycinnamic lactone
  • O-Hydroxyzimtsaure-lacton
  • o-hydroxycinnamic acid delta-lactone
  • {2H-Benzo[b]pyran-2-one}

Applications:

Uv-Vis Spectrum of Coumarin

February 20, 2026

Access the UV-Vis Spectrum SIELC Library

If you are looking for optimized HPLC method to analyze Coumarin check our HPLC Applications library

For optimal results in HPLC analysis, it is recommended to measure absorbance at a wavelength that matches the absorption maximum of the compound(s) being analyzed. The UV spectrum shown can assist in selecting an appropriate wavelength for your analysis. Please note that certain mobile phases and buffers may block wavelengths below 230 nm, rendering absorbance measurement at these wavelengths ineffective. If detection below 230 nm is required, it is recommended to use acetonitrile and water as low UV-transparent mobile phases, with phosphoric acid and its salts, sulfuric acid, and TFA as buffers.
For some compounds, the UV-Vis Spectrum is affected by the pH of the mobile phase. The spectra presented here are measured with an acidic mobile phase that has a pH of 3 or lower.

Application Analytes:
Coumarin
SIELC Technologies usually develops more than one method for each compound. Therefore, this particular method may not be the best available method from our portfolio for your specific application. Before you decide to implement this method in your research, please send us an email to research@sielc.com so we can ensure you get optimal results for your compound/s of interest.

HPLC Method for Analysis of Coumarin

July 18, 2018

HPLC Method for Coumarin on Newcrom R1 by SIELC Technologies

HPLC Method for Analysis of Coumarin

High Performance Liquid Chromatography (HPLC) Method for Analysis of Coumarin 

Coumarin is an aromatic chemical that is used as a fragrance ingredient. It has a sweet earthy scent and is typically found in Tonka beans, cinnamon, woodruff, bison grass, and green tea. Besides a pleasant smell it had anti-inflammatory, antibacterial, and antifungal properties.

Coumarin an be retained and analyzed using the Newcrom R1 stationary phase column. The analysis utilizes an isocratic method with a simple mobile phase consisting of water and acetonitrile (MeCN) with a phosphoric acid buffer. Detection is performed using UV.

ColumnNewcrom R1, 3.2 x 100 mm, 3 µm, 100 A, dual ended
Mobile PhaseMeCN/H2O – 25/75%
BufferH3PO4 – 0.1 %
Flow Rate0.5 ml/min
DetectionUV, 276 nm
Class of Compounds
Drug, Flavouring substance, Hydrophobic, Neutral
Analyzing CompoundsCoumarin

Application Column

Newcrom R1

Column Diameter: 3.2 mm
Column Length: 100 mm
Particle Size: 3 µm
Pore Size: 100 A
Column options: dual ended

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Application Analytes:
Coumarin

Application Detection:
UV Detection
SIELC Technologies usually develops more than one method for each compound. Therefore, this particular method may not be the best available method from our portfolio for your specific application. Before you decide to implement this method in your research, please send us an email to research@sielc.com so we can ensure you get optimal results for your compound/s of interest.