Parietin is the predominant cortical pigment of lichens in the genus Caloplaca, a secondary product of the lichen Xanthoria parietina, and a pigment found in the roots of Curled Dock (Rumex crispus). It has an orangy-yellow color and absorbs blue light.

CAS：521-61-9
中文别名：大黄素甲醚.朱砂莲乙素;1,8-二羥-3-甲氧-6-甲蒽醌;朱砂莲乙素;1,8-二羟基-3-甲氧基-6-甲基蒽醌;
英文别名：Parietin;Methoxyemodin;Emodin monomethyl ether;1,8-Dihydroxy-3-methoxy-6-methylanthraquinone,Emodin-3-methyl ether;1,8-Dihydroxy-3-methoxy-6-methyl-9,10-anthracenedione;Emodin-3-methyl ether;Rheochrysidin;Physcion;Physcione;1,8-dihydroxy-5-methyl-3-methoxy-9,10-anthraquinone;1,8-Dihydroxy-3-methoxy-6-methylanthraquinone;1,8-dihydroxy-3-methoxy-6-methyl-9,10-anthraquinone;
分子式：C16H12O5
分子量：284.263
精确质量：284.068
Psa：83.83
Logp：2.1902

UNII：H6PT94IV61

密度：1.448 g/cm3
沸点：560.5ºC at 760 mmHg
熔点：196-206°C
闪点：215.4ºC
折射率：1.677
储存条件：-20ºC Freezer, Under Inert Atmosphere

RTECS号：CB6720000
安全说明：S26
WGK Germany：3
危险类别码：R36/37/38
海关编码：2914699010
危险品标志：Xi
危险性描述：H315; H319; H335
信号词：Warning
危险标志：GHS07
危险性防范说明：P261; P305 + P351 + P338