Orlistat Impurity A

orlistat usp rc a ; 2-oxetanone,3-hexyl-4-[(2r)-2-hydroxytridecyl]-, (3s,4s)- ; [3s-[3α,4β(s*)]]-3-hexyl-4-(2-hydroxytridecyl)-2-oxetanone ; (3s,4s)-3-hexyl-4-[(r)-2-(hydroxytridecyl)]oxetan-2-one ; (3s,4s)-3-hexyl-4-[(r)-2-hydroxytridecyl]-2-oxetanone ; orlistat usp related compound a ; orlistat related compound a ; 2-oxetanone,3-hexyl-4-(2-hydroxytridecyl)-, [3s-[3a,4b(s*)]]- ; orlistat related compound a (25 mg) ((3s,4s)-3-hexyl-4-[(r)-2-hydroxytridecyl]-2-oxetanone) ; (3s,4s)-3-hexyl-4-[(2r)-2-hydroxytridecyl]-2-oxetanone