15-Keto Bimatoprost is a structurally modified derivative of the prostaglandin F2ฮฑ analog Bimatoprost, featuring an oxidized 15-keto functionality replacing the parent compound's 15-hydroxyl group. This oxidation introduces a carbonyl moiety at the terminal cyclopentyl ring, altering the molecule's conformational flexibility and hydrogen-bonding capacity while preserving the core lactone and conjugated diene systems critical for receptor interaction. The compound arises as a key synthetic byproduct during oxidative steps in Bimatoprost API manufacturing, necessitating its quantification as a process-related impurity. It serves as an HPLC reference standard for impurity profiling in quality control.
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InChI=1S/C25H35NO4/c1-2-26-25(30)13-9-4-3-8-12-21-22(24(29)18-23(21)28)17-16-20(27)15-14-19-10-6-5-7-11-19/h3,5-8,10-11,16-17,21-24,28-29H,2,4,9,12-15,18H2,1H3,(H,26,30)/b8-3-,17-16+/t21-,22-,23+,24-/m1/s1
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