视频1区2区3区_日韩Av三区在线_日韩一级长视频_依依成人电影

【Molecular formula】:  C₃H₉NO₃S
【CAS NO.】: 3687-18-1 

【Molecular weight 】：139.169
【Introduction】：Important medical intermediate.

【Quality parameters】：

【Storage】：Use as soon as possible at low temperature, avoiding moisture or impurity.
【Packing】：25kg in paperboard drum or according to users.