Isorhapontigenin is a tetrahydroxylated stilbenoid with a methoxy group. It is an isomer of rhapontigenin and an analog of resveratrol. It is found in the Chinese herb Gnetum cleistostachyum, in Gnetum parvifolium and in the seeds of the palm Aiphanes aculeata.

CAS：32507-66-7
中文别名：5-[(1E)-2-(4-羟基-3-甲氧基苯基)乙烯基]-1,3-苯二酚;(E)-3\'-甲氧基-3,4\',5-三羟基苯乙烯;(E)-5-[2-(4-羟基-3-甲氧基苯基)乙烯基]-1,3-苯二酚;
英文别名：(E)-3\'-Methoxystilbene-3,4\',5-triol;(E)-3,4\',5-Trihydroxy-3\'-methoxystilbene;3,4\',5-Trihydroxy-3\'-methoxy-trans-stilbene;5-[(1E)-2-(4-Hydroxy-3-methoxyphenyl)ethenyl]-1,3-benzened;5-[(E)-2-(4-Hydroxy-3-methoxyphenyl)ethenyl]-1,3-benzenediol;4,3\',5\'-trihydroxy-3-methoxystilbene;100mg;3\',4\',5\'-trihydroxy-3-methoxystilbene;(E)-3-Methoxy-stilbene-4,3\',5\'-triol;
分子式：C15H14O4
分子量：258.269
精确质量：258.089
Psa：69.92
Logp：2.9824

外观与性状：灰白色晶体粉末
密度：1.345
沸点：471.8ºC at 760 mmHg
熔点：182 - 184ºC
闪点：239.1ºC
折射率：1.722

海关编码：2909499000
危险标志：GHS05, GHS07
信号词：Danger
危险性防范说明：P261; P280; P305 + P351 + P338
危险性描述：H315; H318; H335