Serotonin hydrochloride
CGP 28014
Tolcapone (Standard)
Opicapone (Standard)
Entacapone sodium salt
(E)-5-Hydroxyferulic acid
Ro 41-0960
U-0521
BIA 3-335
3,5-Dinitrocatechol
3-O-Methyltolcapone-d 7
3-O-Methyltolcapone
S-Adenosylhomocysteine sulfoxide
Entacapone (Standard)
(-)-Gallocatechingallate
Opicapone
5-Hydroxyferulicacid
Nitecapone
Nebicapone