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ChemicalBook Product Catalog Pharmaceutical intermediates Heterocyclic compound Pyran compounds 5,7-Dihydroxy-4-methylcoumarin

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5,7-Dihydroxy-4-methylcoumarin

$ 1.00 /1kg

Min. Order1g
Purity99%
Cas No2107-76-8
Supply Ability100KG
Update time2019-07-06

career henan chemical co

career henan chemical co

7YR

China

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Chemical Properties

Product Name	5,7-Dihydroxy-4-methylcoumarin
CAS No	2107-76-8
EC-No
Min. Order	1g
Purity	99%
Supply Ability	100KG
Release date	2019/07/06

5,7-Dihydroxy-4-methylcoumarin Basic information

Product Name:	5,7-Dihydroxy-4-methylcoumarin
Synonyms:	DIHYDROXY-4-METHYLCOUMARIN, 5,7-;4-METHYL-5,7-DIHYDROXYCOUMARIN;5,7-DIHYDROXY-4-METHYL-2H-CHROMEN-2-ONE;5,7-DIHYDROXY-4-METHYLCOUMARIN;5,7-dihydroxy-4-methyl-2h-1-benzopyran-2-on;5,7-dihydroxy-4-methyl-coumari;5,7-dihydroxy-4-methyl-2-benzopyrone;DIHYDROXY-4-METHYLCOUMARIN, 5,7-(RG)
CAS:	2107-76-8
MF:	C10H8O4
MW:	192.17
EINECS:	218-289-9
Product Categories:	Coumarins;Building Blocks;Heterocyclic Building Blocks;Building Blocks;Chemical Synthesis;Heterocyclic Building Blocks
Mol File:	2107-76-8.mol

5,7-Dihydroxy-4-methylcoumarin Chemical Properties

Melting point	296-299 °C(lit.)
Sensitive	Light Sensitive
λmax	322nm(MeOH)(lit.)
BRN	179133
InChIKey	QNVWGEJMXOQQPM-UHFFFAOYSA-N
CAS DataBase Reference	2107-76-8(CAS DataBase Reference)
EPA Substance Registry System	2H-1-Benzopyran- 2-one, 5,7-dihydroxy-4-methyl-(2107-76-8)

Safety Information

Hazard Codes	Xi
Risk Statements	36/37/38
Safety Statements	26-36
WGK Germany	3
TSCA	Yes
HazardClass	IRRITANT
HS Code	29321900
Hazardous Substances Data	2107-76-8(Hazardous Substances Data)

MSDS Information

Provider	Language
5,7-Dihydroxy-4-methylchromen-2-one	English
SigmaAldrich	English
ALFA	English

5,7-Dihydroxy-4-methylcoumarin Usage And Synthesis

Chemical Properties	White metallic powder
General Description	Yellow powder. Fluoresces blue. Absorbs ultraviolet light.
Air & Water Reactions	Slightly water soluble .
Reactivity Profile	5,7-Dihydroxy-4-methylcoumarin is a phenol and lactone. Phenols do not behave as organic alcohols, as one might guess from the presence of a hydroxyl (-OH) group in their structure. Instead, they react as weak organic acids. Phenols and cresols are much weaker as acids than common carboxylic acids (phenol has Ka = 1.3 x 10^[-10]). These materials are incompatible with strong reducing substances such as hydrides, nitrides, alkali metals, and sulfides. Flammable gas (H2) is often generated, and the heat of the reaction may ignite the gas. Heat is also generated by the acid-base reaction between phenols and bases. Such heating may initiate polymerization of the organic compound. Phenols are sulfonated very readily (for example, by concentrated sulfuric acid at room temperature). The reactions generate heat. Phenols are also nitrated very rapidly, even by dilute nitric acid. Lactones react similarly to esters. Esters react with acids to liberate heat along with alcohols and acids. Strong oxidizing acids may cause a vigorous reaction that is sufficiently exothermic to ignite the reaction products. Heat is also generated by the interaction of esters with caustic solutions. Flammable hydrogen is generated by mixing esters with alkali metals and hydrides.
Fire Hazard	Flash point data for 5,7-Dihydroxy-4-methylcoumarin are not available. 5,7-Dihydroxy-4-methylcoumarin is probably combustible.

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