对白超刺激精彩粗话av,国内成+人亚洲+欧美+综合在线,国产精品影音,永久免费av在线播放,中国一级片在线观看,一级黄色视,成人黄色免费播放

[Product name]:

4-[(E)-2-(3,5-Dimethoxyphenyl)ethenyl]benzene-1,2-diol;

4-[(E)-2-(3,5-Dimethoxyphenyl)vinyl]benzene-1,2-diol;

(E)-4-(3,5-Dimethoxystyryl)benzene-1,2-diol;

4-[2-(3,5-dimethoxyphenyl)ethenyl]benzene-1,2-diol;

[Structural Formula]:

[Molecular Formula]:

C₁₆H₁₆O₄

[Molecular Weight]:

272.29600

[CAS NO]:

475231-21-1

[Packing]:

Properties

Appearance

 White crystalline powder

Boiling range ℃

112～115℃

Quality Specifications

Purity%

≥98.0

Moisture %

≤0.5