欧美和黑人XXXX猛交视频,小泽玛丽无码视频一区,GOGOGO高清在线观看,欧美,日韩,在线视频

Code: HT009

Product Name: Diethyl 2-(aMinoMethylene)Malonate

Cas No.: 6296-99-7

Structural formula:

Molecular formula: C₈H₁₃NO₄
Purity: 98%
Melting point: 56-59°C
Storage conditions: 2-8°C(protect from light)
Character: White to light yellow solid