7-Ethoxy-4-methylcoumarin | CAS:87-05-8

7-Ethoxy-4-methylcoumarin

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7-Ethoxy-4-methylcoumarin Description

Source:
Solvent:	Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
Storage:	Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months(2-8C). Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour. Need more advice on solubility, usage and handling? Please email to: service@chemfaces.com
After receiving:	The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.

Structure Identification:

Journal of Instrumental Analysis, 2016.

Determination of Coumarin Allergen and Its Derivatives in Cosmetics by HPLC and Their Verification by HPLC-MS/MS.[Reference: WebLink]

METHODS AND RESULTS:
A high performance liquid chromatographic( HPLC) method was developed for the determination of coumarin allergen and its seven derivatives, including dihydrocoumarin,7-methoxycoumarin,7-methylcoumarin,7-Ethoxy-4-methylcoumarin, cyclocoumarol, dicoumarol and acenocoumarol in cosmetics. Cosmetic samples were ultrasonically extracted with 0. 1 mol / L aqueous sodium hydroxide- acetonitrile( 1∶9). The extract was centrifuged,and filtered by microporous membrane. The chromatographic separation for the analytes was achieved on a ZORBAX SB- C18( 250 mm × 4. 6 mm,5 μm) column. Gradient elution was performed using 0. 05 mol / L aqueous ammonium acetate solution( containing 0. 25% acetic acid) and acetonitrile. The quantification was carried out by the external standard method,and the suspected samples were further verified by high performance liquid chromatography- tandem mass spectrometry( HPLC- MS / MS). The experimental results indicated that good linearities were observed over a certain concentration range with correlation coefficients better than 0. 999 6,and the limits of quantitation( LOQs) were between 8 and 20 mg / kg. The average recoveries for the analytes at three spiked levels ranged from 84. 6% to 100. 7% with relative standard deviations( RSDs) of 0. 8%- 9. 7%.
CONCLUSIONS:
The proposed method is accurate,robust and specific,and could provide scientific basis and a technical support for the inspection and quality control of cosmetics.

Product Name	7-Ethoxy-4-methylcoumarin
Price:	$30 / 20mg
CAS No.:	87-05-8
Catalog No.:	CFN70211
Molecular Formula:	C₁₂H₁₂O₃
Molecular Weight:	204.2 g/mol
Purity:	>=98%
Type of Compound:	Coumarins
Physical Desc.:	Powder
Source:
Solvent:	Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
Download:	COA MSDS
Similar structural:	Comparison
Guestbook:

Size /Price /Stock	10 mM * 100 uL in DMSO / Inquiry / In-stock 10 mM * 1 mL in DMSO / Inquiry / In-stock
Related Libraries	Coumarins Compound Library

	1 mg	5 mg	10 mg	20 mg	25 mg
1 mM	4.8972 mL	24.4858 mL	48.9716 mL	97.9432 mL	122.429 mL
5 mM	0.9794 mL	4.8972 mL	9.7943 mL	19.5886 mL	24.4858 mL
10 mM	0.4897 mL	2.4486 mL	4.8972 mL	9.7943 mL	12.2429 mL
50 mM	0.0979 mL	0.4897 mL	0.9794 mL	1.9589 mL	2.4486 mL
100 mM	0.049 mL	0.2449 mL	0.4897 mL	0.9794 mL	1.2243 mL

CFN00347	Axillarine	19637-66-2	369.41	C₁₈H₂₇NO₇
CFN98526	Anhydroicaritin	38226-86-7	368.38	C₂₁H₂₀O₆
CFN91632	D-Sorbose	3615-56-3	180.16	C₆H₁₂O₆
CFN92909	Drynachromoside A	1507388-29-5	500.45	C₂₂H₂₈O₁₃