欧美xxxx精品另类|18亚洲CHINESEGAY男男1069|唐朝禁宫秘史|小辣椒导航|欧美AV日韩AV无码

Key products
Products
4,4'-biphenyldicarboxylic acid dichloride;4,4'-Bis(chloroformyl)biphenyl
Name:           4,4'-biphenyldicarboxylic acid dichloride;4,4'-Bis(chloroformyl)biphenyl
CAS No:            2351-37-3
Back