Patent ID: 7687070

Claim:
A compound having the structure and salts thereof where: m of (A) m is 1; R is R B , where R B is a steroid selected from the group consisting of stigmasterol, ergosterol, and cholic acid; A is A 3 where: A 3 is —NH—CH 2 — or —CO—N—R 1 —, where A 3 is —NH—CH 2 — when R is cholic acid and A 3 is —CO—N—R 1 — when R is stigmasterol or ergosterol; where R 1 is an alkyl, alkenyl, alkynl, alkoxy, acyl or alkylthio having from 1 to about 24 carbon atoms; and where Z is selected from the group consisting of Z 1 -Z 15 or Z 18 ; where: Z 1 is H; Z 2 is —(CH 2 ) n —X, where n is 1-24 and X is selected from the group consisting of Br, Cl, I and F; Z 3 is —(CH 2 ) n —NH 2 , n=1-24; Z 4 is —CH 2 —NH—(CH 2 ) 3 —NH—(CH 2 ) 4 —NH 2 ; Z 5 is —CH 2 —NH—(CH 2 ) 3 —NH—(CH 2 ) 3 —NH—(CH 2 ) 3 —NH 2 ; Z 6 is —CH 2 —NH—(CH 2 ) n —NH 2 , n=2-24; Z 7 is -L-X where L is selected from the group consisting of branched or straight chain alkyl, alkenyl, cycloalkyl, aryl, alkoxy, thioalkyl and thioether groups having from 1 to about 24 carbon atoms, and X is selected from the group consisting of Br, Cl, I, F, NH 2 and [(NH 2 )—(CH 2 ) n ] m where n is 2-24 and m is 1-24; Z 8 is Z 9 is where n=1-24, D is H or other groups attached by amide or alkyl amino groups; Z 10 is a reporter molecule; Z 11 is a protein, peptide or polypeptide; Z 12 is a polysaccharide; Z 13 is an amine or halide reactive group; Z 14 is Z 15 is n=1-24, D is H or other groups attached by amide or alkyl amino groups; and Z 18 is a nucleic acid binding substance.