A lamellar liquid crystal as an in situ surface balance II. The conformation of 2-(alkoyloxy)-1[(alkoyloxy)methyl]-ethyl-7-(4-heptyl-5,6-dicarboxyl-2-cyclohexene-1-yl) heptanoate

A lamellar liquid crystal with fosinopril sodium

The location and conformation of fosinopril sodium (FS) in a lamellar liquid crystal of water, sodium dodecyl sulfate, and decanol was studied by low-angle X-ray diffraction. The result showed the FS molecule to be located within the amphiphilic part of the liquid crystalline structure with the polar parts anchored at the water/polar part interface. An area per molecule in the range of 95-100 A2 showed not only the polar groups but also the benzene ring to be located at this interface.