Glycerol ester derivative

Organic compounds -- part of the class 532-570 series – Organic compounds – Fatty compounds having an acid moiety which contains the...

Reexamination Certificate

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Details

C534S010000, C424S001210, C558S180000

Reexamination Certificate

active

07371877

ABSTRACT:
A compound represented by the following general formula (IA) or a salt thereof:wherein Ar1represents hydrogen atom or an aryl group having at least one iodine atom as a substituent; Ar2represents an aryl group having at least one iodine atom as a substituent; L1and L2independently represent a divalent bridging group of which main chain contains 6 or more carbon atoms; L3represents a single bond or a divalent bridging group of which main chain contains 1 to 6 carbon atoms and one oxygen atom; X represents a functional group containing at least one heteroatom, provided that, when L3is a single bond, X represents a functional group other than hydroxyl group. The compound can be used as a membrane component of liposomes, and the liposomes can be used as a contrast medium for X-ray radiography.

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