四虎永久在线精品免费一区二,a在线免费看,麻豆精品国产91久久久久久,91精品国,久久男人,亚洲国产午夜视频,蜜臀av夜夜澡人人爽人人桃色

【Molecular formula】:  C₁₄H₁₁NO₅
【CAS NO.】:  134308-13-7

【Molecular weight】：273.241
【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 the users.