日本熟妇色一本在线播放_亚洲精品制服丝袜第一页_少妇人妻好深太紧了_a天堂亚洲无码在线

Chemical Name：2-butoxy-N-(2-ethyl amino ethyl)-4 - quinoline formamide hydrochloride
Molecular Formula：C₂₀H₂₉N₃O₂.HCL
Molecular Weight：379.92
Structure Formula：

Usage：biochemical research