Formulation: A solution in methyl acetate
Formal Name: 9α,11α,15S-trihydroxy-20a,20b-dihomoprosta-5Z,13E-dien-1-oic acid
Purity: ≥98%
Formula Markup: C22H38O5
Formula Weight: 382,5
Shelf life (days): 365
CAS Number: 36950-85-3
Notes: 20-ethyl Prostaglandin F2α (20-ethyl PGF2α) is an analog of PGF2α in which the ω-chain has been extended by the addition of two more methylene carbon atoms. It is therefore a modified version of the clinically approved glaucoma medication unoprostone.{8147} Unoprostone also contains lower side chain modifications (13,14-dihydro-15-keto) which severely limit its affinity for FP receptors, contributing to its lack of potency as a medication. 20-ethyl PGF2α retains the natural 15(S) allylic hydroxyl in the lower side chain, which may improve its potency as an intraocular hypotensive agent compared to unoprostone. The 2 carbon extension in 20-ethyl-PGF2α increases the Ki (120 nM) for the FP receptor from bovine corpus luteum only about 2.5-fold compared to PGF2α (50 nM).{11182} In vivo effects may be prolonged using 20-ethyl PGF2α, as the activity of 15-hydroxy PGDH using 20-ethyl PGF2α as a substrate is only 35% of the activity observed with PGF2α.{2309,11182}
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