Patent ID: 7625878

Claim:
A composition comprising an (SAET)x-(AE)y-CD of the Formula 3: wherein: v is 4, 5 or 6; and Q is independently selected at each occurrence from the group consisting of —OH, -SAET″ and -AE″; x is the degree of substitution for the SAET moiety and is 1 to 3v+z; y is the degree of substitution for the AE moiety and is 1 to 3v+z; z is 0 to 5; -SAE is —O—(C 2 -C 6 alkylene)-SO 3 − ; T is independently at each occurrence a cation; and AE is —O(C 1 -C 3 alkyl); provided that at least one -SAET moiety and at least one -AE moiety are present; and the sum of x, y and the total number of —OH groups in a cyclodextrin derivative is 3v+6; wherein the composition excludes a permethylated β-CD comprising a single —SBE moiety.