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15(S)-15-methyl Prostaglandin E₁ (15(S)-15-methyl PGE₁) is a metabolically stable synthetic analog of PGE₁ . In sharp contrast to the bronchodilatory effects of PGE₁, 15(S)-15-methyl PGE₁ is a weak constrictor of human respiratory tract smooth muscle.¹

ChEBI: 15-Methyl-15S-Prostaglandin E1 is a prostanoid.

1. Karim, S.M.M., Adaikan, P.G., and Kottegoda, S.R. Prostaglandins and human respiratory tract smooth muscle: Structure activity relationship Adv. Prostaglandin Thromboxane Res. 7,969-980(1980).