有机砌块

CAS号：56-49-5

品名：3-甲基胆蒽3-methylcholanthrene

中文别名：3-甲基胆蒽

英文别名：3-Methylcholanthrene;3-methyl-1,2-dihydrobenzo[j]aceanthrylene;Benz[j]aceanthrylene,1,2-dihydro-3-methyl-;

分子式：C21H16

分子量：268.352

精确质量：268.125

Psa：0.0

MDL号：MFCD00003704

外观与性状：黄色结晶固体

密度：1.223 g/cm3

沸点：280ºC 80 mm Hg(lit.)

熔点：178-180ºC

闪点：-5ºC

折射率：1.762

稳定性：Stable. Combustible. Incompatible with strong oxidizing agents.

储存条件：2-8ºC

危险类别码：R45

海关编码：2902909090

危险品运输编码：UN 2811

危险类别：6.1(b)

包装等级：III

简介：Methylcholanthreneisahighlycarcinogenicpolycyclicaromatichydrocarbonproducedbyburningorganiccompoundsatveryhightemperatures[clarificationneeded].Methylcholanthreneisalsoknownas3-methylcholanthrene,20-methylcholanthreneortheIUPACname3-methyl-1,2-dyhydrobenzo[j]aceanthrylene.Theshortnotationoftenusedis3-MCorMCA.Thiscompoundformspaleyellowsolidcrystalswhencrystallizedfrombenzeneandether.Ithasameltingpointaround180°Canditsboilingpointisaround280°Catapressureof80mmHg.Methylcholanthreneisusedinlaboratorystudiesofchemicalcarcinogenesis.Itisanalkylatedderivativeofbenz[a]anthraceneandhasasimilarUVspectrum.Themostcommonisomeris3-methylcholanthrene,althoughthemethylgroupcanoccurinotherplaces.

有机砌块

CAS号：1257-08-5

品名：(-)-表儿茶素没食子酸酯(-)-epicatechin-3-O-gallate

中文别名：表儿茶素没食子酸酯;

英文别名：(-)-cis-3,3',4',5,7-Pentahydroxyflavane3-gallate;(-)-Epicatechingallate;(-)-Epicatechingallate;Epicatechingallate;(-)-cis-2-(3,4-Dihydroxyphenyl)-3,4-dihydro-1(2H)-benzopyran-3,5,7-triol3-gallate;(−)-Epicatechingallate,fromgreentea;ECG;

分子式：C22H18O10

分子量：442.372

精确质量：442.09

Psa：177.14

RTECS号：DH9030000

MDL号：MFCD00075936

PubChem号：24894531

密度：1.685g/cm3

沸点：920.9ºC at 760 mmHg

熔点：257-258ºC

闪点：325.2ºC

折射率：1.769

储存条件：2-8ºC

蒸汽压：0mmHg at 25°C

简介：Epicatechingallate(ECG)isaflavan-3-ol,atypeofflavonoid,presentingreentea.Itisalsoreportedinbuckwheatandingrape.