USP-Standards from the United States Pharmacopeia

(a mixture of acetoisovanillone, hesperidin, isorhoifolin, diosmin, linarin and diosmetin)

(2-(Diphenylmethoxy)-N-methylethanamine hydrochloride)

(3-(benzhydryloxy)propane-1,2-diol)

(2-(benzhydryloxy)-N,N-dimethylethan-1-amine oxide hydrochloride)

(4-[(Methylamino)acetyl]-1,2-phenylene dipivalate hydrochloride)

(2,2'-{[4,6,8-Tri(piperidin-1-yl)pyrimido[5,4-d]pyrimidin-2-yl]azanediyl}diethanol)

(2,2',2'',2''',2'''',2'''''-{[8-(Piperidin-1-yl)pyrimido[5,4-d]pyrimidine-2,4,6-triyl]tris(azanetriyl)}hexaethanol)

(2,2'-{[6-chloro-4,8-di(piperidin-1-yl)pyrimido[5,4-d]pyrimidin-2-yl]azanediyl}diethanol)

(2,2'-({6-[(2-Hydroxyethyl)amino]-4,8-di(piperidin-1-yl)pyrimido[5,4-d]pyrimidin-2-yl}azanediyl)diethanol)

(2,2',2'',2'''-{[6,8-Di(piperidin-1-yl)pyrimido[5,4-d]pyrimidine-2,4-diyl]bis(azanetriyl)}tetraethanol)

(2,2',2'',2'''-({4-[(2-Hydroxyethyl)amino]-8-(piperidin-1-yl)pyrimido[5,4-d]pyrimidine-2,6-diyl}bis(azanetriyl))tetraethanol)