| Identification | More | [Name]
5,7-Dihydroxy-4-methylcoumarin | [CAS]
2107-76-8 | [Synonyms]
4-METHYL-5,7-DIHYDROXYCOUMARIN
5,7-DIHYDROXY-4-METHYL-2H-CHROMEN-2-ONE
5,7-DIHYDROXY-4-METHYLCOUMARIN
DIHYDROXY-4-METHYLCOUMARIN, 5,7-
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)
4-METHYL-5,7-DIHYDROXYCOUMARIN 97%
5,7-Dihydroxy-4-methylchromen-2-one
2H-1-Benzopyran-2-one, 5,7-dihydroxy-4-methyl
5,7-Dihydroxy-4-methylcoumarin ,98%
5,7-Dihydroxy-4-methyl-2H-1-benzopyran-2-one | [EINECS(EC#)]
218-289-9 | [Molecular Formula]
C10H8O4 | [MDL Number]
MFCD00016966 | [Molecular Weight]
192.17 | [MOL File]
2107-76-8.mol |
| Chemical Properties | Back Directory | [Melting point ]
296-299 °C (lit.) | [Boiling point ]
472.1±14.0 °C(Predicted) | [density ]
1.456±0.06 g/cm3(Predicted) | [storage temp. ]
-20°C Freezer, Under inert atmosphere | [solubility ]
DMSO (Slightly), Methanol (Slightly) | [form ]
Solid | [pka]
7.29±0.20(Predicted) | [color ]
Off-White to Pale Green | [Sensitive ]
Light Sensitive | [λmax]
322nm(MeOH)(lit.) | [Detection Methods]
HPLC,NMR,MS | [BRN ]
179133 | [InChIKey]
QNVWGEJMXOQQPM-UHFFFAOYSA-N | [CAS DataBase Reference]
2107-76-8(CAS DataBase Reference) | [EPA Substance Registry System]
2107-76-8(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
Xi | [Risk Statements ]
R36/37/38:Irritating to eyes, respiratory system and skin . | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing . | [WGK Germany ]
3
| [TSCA ]
Yes | [HazardClass ]
IRRITANT | [HS Code ]
29321900 | [Hazardous Substances Data]
2107-76-8(Hazardous Substances Data) |
| Hazard Information | Back Directory | [General Description]
Yellow powder. Fluoresces blue. Absorbs ultraviolet light. | [Reactivity Profile]
5,7-DIHYDROXY-4-METHYL COUMARIN(2107-76-8) 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. | [Air & Water Reactions]
Slightly water soluble . | [Fire Hazard]
Flash point data for this chemical are not available. 5,7-DIHYDROXY-4-METHYL COUMARIN is probably combustible. | [Chemical Properties]
White metallic powder | [Uses]
5,7-Dihydroxy-4-methylcoumarin may be used in the synthesis of pyrano[2,3-h]coumarin derivatives and 5,7-dihydroxy-8-formyl-4-methylcoumarin. | [Definition]
ChEBI: 5,7-Dihydroxy-4-methylcoumarin is a hydroxycoumarin. |
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