Patent ID: 7989432

Claim:
A micelle comprising a compound of formula (A), wherein the micelle has a stable hydrodynamic diameter of about 8 nm to about 10 nm; wherein the compound of formula (A) is: or a pharmaceutically acceptable salt or stereoisomer thereof; wherein R 1 is selected from the group consisting of: J, K and Q are each independently a straight or branched C 1-15 alkyl; L is O, N or C; M is O or N; G is N, O, S, SO or SO 2 ; R 2 is a straight or branched C 5-15 alkyl; R 3 is selected from the group consisting of: E is N, O, S, SO or SO 2 ; A, B and D are each independently a straight or branched C 4-20 alkyl group; R 4 is a straight or branched C 1-15 alkyl group or U and V are each independently a straight or branched C 2-15 alkyl group; W is a hydrogen or a straight or branched C 1-5 alkyl group; R 5 is hydrogen, -J′, -J′-OH, -J′-O—K′, -J′-O—K′—OH or J′-O—PO(OH) 2 ; J′ and K′ are each independently a straight or branched C 1-5 alkyl group; R 6 is hydroxy, halogen, a C 1-5 alkoxy group or a C 1-5 acyloxy group; A 1 and A 2 are each independently selected from the group consisting of: Z is a straight or branched C 1-10 alkyl group.