Methylcholanthrene is a highly carcinogenic polycyclic aromatic hydrocarbon produced by burning organic compounds at very high temperatures[clarification needed]. Methylcholanthrene is also known as 3-methylcholanthrene, 20-methylcholanthrene or the IUPAC name 3-methyl-1,2-dyhydrobenzo[j]aceanthrylene. The short notation often used is 3-MC or MCA. This compound forms pale yellow solid crystals when crystallized from benzene and ether. It has a melting point around 180°C and its boiling point is around 280°C at a pressure of 80 mmHg. Methylcholanthrene is used in laboratory studies of chemical carcinogenesis. It is an alkylated derivative of benz[a]anthracene and has a similar UV spectrum. The most common isomer is 3-methylcholanthrene, although the methyl group can occur in other places.

CAS：56-49-5
中文别名：
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
Logp：5.5532

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