Polydiethylstilbestrol phosphate

"PDSP" redirects here. For the political party in the Philippines, see Partido Demokratiko Sosyalista ng Pilipinas.

Polydiethylstilbestrol phosphate (PSP, PDSP) is an estrogen medication which has been used in scientific research and has been studied for use in veterinary medicine as a livestock growth promoter.^{[1][2][3][4][5][6]} It is a phosphate ester of diethylstilbestrol (DES) in the form of a polymer and is a polymeric form of fosfestrol (diethylstilbestrol diphosphate); PDSP acts as a long-lasting prodrug of DES.^[1] It has similarities to polyestradiol phosphate and polyestriol phosphate.^[1]

Polydiethylstilbestrol phosphate

Clinical data
Other names	PSP; PDSP; Diethylstilbestrol polymer with phosphoric acid; (E)-4,4'-(1,2-Diethyl-1,2-ethenediyl)bis(phenol) polymer with phosphoric acid
Routes of administration	Intramuscular injection
Drug class	Estrogen; Nonsteroidal estrogen; Estrogen ester
Identifiers
CAS Number	30852-64-3 Y
Chemical and physical data
Formula	(C18H19O4P)n

See also

• List of estrogen esters § Diethylstilbestrol esters
• Polytestosterone phloretin phosphate