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ChemicalBook > Produktkatalog >Pharmazeutische Zwischenprodukte >Heterocyclische Verbindung >Pyranverbindungen >5,7-Dihydroxy-4-methyl-2-benzopyron

5,7-Dihydroxy-4-methyl-2-benzopyron Produkt Beschreibung

CAS-Nr.2107-76-8
Bezeichnung:5,7-Dihydroxy-4-methyl-2-benzopyron
Englisch Name:5,7-Dihydroxy-4-methylcoumarin
Synonyma:
4-Methyllimetol;5,7-dihydroxy-4-methyl-coumari;5,7-DIHYDROXY-4-METHYLCOUMARIN;4-METHYL-5,7-DIHYDROXYCOUMARIN;DIHYDROXY-4-METHYLCOUMARIN, 5,7-;Coumarin, 5,7-dihydroxy-4-methyl-;4-METHYL-5,7-DIHYDROXYCOUMARIN 97%;5,7-Dihydroxy-4-methylcoumarin ,98%;5,7-Dihydroxy-4-methylchromen-2-one;5,7-Dihydroxy-4-methyl-2-chromenone
CBNumber:CB1734603
Summenformel:C10H8O4
Molgewicht:192.17
MOL-Datei:2107-76-8.mol
5,7-Dihydroxy-4-methyl-2-benzopyron physikalisch-chemischer Eigenschaften
Schmelzpunkt:: 296-299 °C(lit.)
Sensitive : Light Sensitive
maximale Wellenlänge (λmax): 322nm(MeOH)(lit.)
BRN : 179133
InChIKey: QNVWGEJMXOQQPM-UHFFFAOYSA-N
CAS Datenbank: 2107-76-8(CAS DataBase Reference)
EPA chemische Informationen: 2H-1-Benzopyran- 2-one, 5,7-dihydroxy-4-methyl-(2107-76-8)
Sicherheit
Kennzeichnung gefährlicher: Xi
R-Sätze:: 36/37/38
S-Sätze:: 26-36
WGK Germany : 3
TSCA : Yes
HazardClass : IRRITANT
HS Code : 29321900
Giftige Stoffe Daten: 2107-76-8(Hazardous Substances Data)

5,7-Dihydroxy-4-methyl-2-benzopyron Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
Chemische Eigenschaften
White metallic powder
Allgemeine Beschreibung
Yellow powder. Fluoresces blue. Absorbs ultraviolet light.
Air & Water Reaktionen
Slightly water soluble .
Reaktivität anzeigen
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.
Brandgefahr
Flash point data for 5,7-Dihydroxy-4-methylcoumarin are not available. 5,7-Dihydroxy-4-methylcoumarin is probably combustible.
5,7-Dihydroxy-4-methyl-2-benzopyron Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Ethylacetoacetat Phloroglucin Ethanol Schwefelsure
Downstream Produkte
5,7-Dihydroxy-4-methyl-2-benzopyron Anbieter Lieferant Produzent Hersteller Vertrieb Händler.      Global( 81)Lieferanten     
Firmenname Telefon Fax E-Mail Land Produktkatalog Edge Rate
Mainchem Co., Ltd.
+86-0592-6210733
+86-0592-6210733sales@mainchem.com CHINA 32457 55
Shanghai Zheyan Biotech Co., Ltd.
18017610038
zheyansh@163.com CHINA 3623 58
career henan chemical co
+86-371-86658258
sales@coreychem.com CHINA 20516 58
Chengdu Biopurify Phytochemicals Ltd.
18080483897
maggie@biopurify.com CHINA 2236 58
Chemwill Asia Co.,Ltd.
86-21-51086038
86-21-51861608chemwill_asia@126.com;sales@chemwill.com;chemwill@hotmail.com;chemwill@gmail.com CHINA 23982 58
Tianjin heowns Biochemical Technology Co., Ltd. 400 638 7771
sales@heowns.com China 14464 57
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
+86-10-82849933jkinfo@jkchemical.com;market6@jkchemical.com China 96815 76
Alfa Aesar 400-610-6006; 021-67582000
021-67582001/03/05saleschina@alfa-asia.com China 30168 84
Energy Chemical 021-58432009 / 400-005-6266
021-58436166-800info@energy-chemical.com China 44046 61
Secco work (Beijing) chemical technology co., LTD 010-69755668;
010-697556681139670422@qq.com China 3569 54
 
2107-76-8(5,7-Dihydroxy-4-methyl-2-benzopyron)Verwandte Suche:
(7aR,cis)3,4,7a,10a-Tetrahydro-5-methoxy-1H,12H-furo(3',2':4,5)-furo(2,3-h)pyrano(3,4-c)(1)-chromen-1,12-dion 5,7-Dihydroxy-4-methyl-2-benzopyron 6-Methyl-2H-1-benzopyran-2-on Dihydrocumarin 6,7-Dihydroxy-2-benzopyron 6-HYDROXYCOUMARIN 2,6-Di-tert-butyl-p-kresol Etidronisure Hymecromon 4-HYDROXY MEPHENYTOIN 1,3-Dihydroxyaceton Triclosan 7-Amino-4-methylcumarin 4-Methylcumarin 1-Benzopyran-2-on 5,7-Dihydroxy-2-phenyl-4H-benzo[b]pyran-4-on 7-Hydroxycumarin 2-(3,6-Dihydroxy-2,4,5,7-tetrabromxanthen-9-yl)-benzoesure
DIHYDROXY-4-METHYLCOUMARIN, 5,7- 4-METHYL-5,7-DIHYDROXYCOUMARIN 5,7-DIHYDROXY-4-METHYL-2H-CHROMEN-2-ONE 4-METHYL-5,7-DIHYDROXYCOUMARIN 97% 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) 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 5,7-Dihydroxy-4-methyl-2-chromenone 4-Methyllimetol Coumarin, 5,7-dihydroxy-4-methyl- 2107-76-8 217-76-8 Building Blocks Heterocyclic Building Blocks Coumarins - Coumarins Building Blocks Heterocyclic Building Blocks Building Blocks Chemical Synthesis Heterocyclic Building Blocks
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