Abstract: The invention relates to a compound of formula (I) in which X1 and X2 each independently represents an oxygen or nitrogen atom; p,m and n are each independently an integer of at least 2; R, R1 and R2 each independently represents a hydrogen atom; a halogen atom; an optionally substituted straight-chained or branched alkyl alkenyl or alkynyl radical; a group R3O in which R3 is hydrogen atom, an optionally substituted straight-chained or branched alkyl alkenyl or alkynyl radical; optionally substituted acyl or optionally substituted aryl or heteroaryl; a group R4O(O)C in which R4 is a hydrogen atom or an optionally straight-chained or branched alkyl, alkenyl or allkynyl radical; a group —SR5 is a hydrogen atom or an optionally substituted straight-chained or branched alkyl alkenyl or alkynyl radical; a group —NR6R7 in which R6 and R7 each independently represents a hydrogen atom, an optionally substituted straight-chained or branched alkyl, alkenyl or alkynyl radical; optionally su

Abstract: Ether-linked phospholipids, derivatized at the polar head group with polyethylene glycol chains having molecular weights greater than 2,000 daltons, are disclosed. Lipid bilayers containing these phospholipids show high oxidative stability. Also disclosed is the use of PEG-derivatized ether-linked lipids in moisturizing and radiation-protective cosmetic compositions.

Abstract: A non-invasive device for the quantitative determination of the level of dants and/or antioxidants in the skin of a subject includes a reference electrode and a working electrode which are connected to an electrical voltage measuring device; and a test solution container which is open at a bottom side thereof and which is placed on the skin of the subject and is sealingly but releasably affixed to the skin, is filled with a test solution, and which permits contact between the test solution and the skin. The test solution container further includes a top opening through which the electrodes are immersed in the test solution.

Abstract: The invention relates to a sustained-release pharmaceutical delivery system for the administration of an antioxidant drug to a patient in need of such drug, wherein said delivery system comprises said drug in combination with a polymeric matrix, said matrix comprising a polymer which does not interact with said drug or a mixture of such polymers. The pharmaceutical delivery system of the invention is useful for the treatment of pathological conditions involving pathologically increased formation of active oxygen species.

Abstract: Novel ether-linked phospholipids derivatized with polyethylene glycol at the polar head group are disclosed. Lipid bilayers containing these phospholipids show high oxidative stability. Also disclosed is the use of PEG-derivatized ether-linked lipids in moisturizing and radiation-protective cosmetic compositions.