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Sigma-Aldrich

7-Ethoxy-4-methylcoumarin

98%

Synonym(s):

Ethyl 4-methylumbelliferyl ether

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About This Item

Empirical Formula (Hill Notation):
C12H12O3
CAS Number:
Molecular Weight:
204.22
Beilstein:
169998
EC Number:
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:

Assay

98%

mp

114-116 °C (lit.)

SMILES string

CCOc1ccc2C(C)=CC(=O)Oc2c1

InChI

1S/C12H12O3/c1-3-14-9-4-5-10-8(2)6-12(13)15-11(10)7-9/h4-7H,3H2,1-2H3

InChI key

NKRISXMDKXBVRJ-UHFFFAOYSA-N

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General description

7-Ethoxy-4-methylcoumarin (EtOMC), also known as ethyl 4-methylumbelliferyl ether, is a coumarin derivative. Its standard molar energy of combustion is ?5888.0 ± 3.2kJ·mol?1 and standard molar enthalpy of formation in the crystalline phase is ?545.4 ± 3.6kJ·mol?1.EtOMC can be prepared by reacting methyl acetoacetate with 3-ethoxyphenol in the presence of boron trifluoride dihydrate.The fluorescence quenching of EtOMC is more effective in the presence 4-hydroxy-TEMPO (4-hydroxy-2,2,6,6-tetramethylpiperidin-1-oxyl).

Application

7-Ethoxy-4-methylcoumarin may be used in the assay of 4-chlormethyl-7-ethoxycoumarin O-deethylase activity.

Storage Class Code

13 - Non 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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Standard molar enthalpies of formation in the crystalline phase of 7-hydroxy-4-methylcoumarin, 7-ethoxy-4-methylcoumarin, and 6-methoxy-4-methylcoumarin.
Amador P, et al.
The Journal of Chemical Thermodynamics, 43(9), 1414-1416 (2011)
Rongjing Yang et al.
Se pu = Chinese journal of chromatography, 30(2), 160-164 (2012-06-12)
A rapid analytical method for the determination of five coumarins (coumarin, 7-methoxycoumarin, dihydrocoumarin, 7-methyl coumarin and 7-ethoxy-4-methyl coumarin) in toys by high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) has been developed. After ultrasonic extraction in tetrahydrofuran, the samples were analyzed
S Ekins et al.
The Journal of pharmacology and experimental therapeutics, 286(3), 1253-1259 (1998-09-11)
Previous studies in this laboratory have determined the lack of specificity of several antibody and substrate probes of CYP2B6. The goals of the current study were to examine the expression of CYP2B6 in a bank of human liver microsome (HLM)
Analysis of fluorescence quenching of coumarin derivatives by 4-hydroxy-TEMPO in aqueous solution.
Zamojc K, et al.
Journal of Fluorescence, 24(3), 713-718 (2014)
Pechmann reaction promoted by boron trifluoride dihydrate.
Stoyanov E and Mezger J.
Molecules (Basel), 10(7), 762-766 (2005)

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