国产在线视频www片,欧美3p在线观看一区二区三区,欧美精品黄页在线观看大全,精品日韩欧美一区二区三区在线播放,久久久综合网,www.99精品,欧美日韩一区二区三在线

【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.