<unk>  (MPP) is a synthetic, nonsteroidal, and highly selective antagonist of ERα that is used in scientific research to study the function of this receptor. It has 200-fold selectivity for ERα over ERβ and 1000-fold selectivity for blocking ERα-mediated gene transcription relative to that of ERβ.
Methylpiperidinopyrazole
Para-Methoxyphenylpiperazine
Meta-Chlorophenylpiperazine
Phenoxyethanol
Nitisinone
Para-Iodoamphetamine
Bucinnazine
Methylbenzylpiperazine