九色精品视频在线观看_亚洲高清不卡一区_无码av一区二区三区在线观看_黄色免费影院_亚洲网站在线看_久久性av

Name:4,4'-Bis(diethylamino)benzophenone
CAS No:90-93-7
Molecular formula:C₂₁H₂₈N₂O
Molecular weight:324.46
Content:≥99%