A dye molecule having the structure (I): where R.sub.1 is an SO.sub.3.sup. group bound to a hydrogen H atom or to another atom or to an ammonium NH4 group or to a lysine salt or to an arginine salt or to a different monovalent cation, and R.sub.2 is an SO.sub.3.sup. group, in particular for making dye preparations for use in methods for the treatment of the bodies of humans or animals, for example for dyeing the internal limiting membrane ILM and/or epiretinal membranes EPRM in a surgical method which involves subsequent removal respectively of the ILM and/or of the EPRM; as well as a dye preparation having a density higher than 1.01 g/cm.sup.3 and comprising at least one dye and at least one agent for increasing its density which is a polymer with the empirical formula (C.sub.12H.sub.22O.sub.11.C.sub.3H.sub.5ClO).sub.n, and structure (II).

A dye molecule having the structure (I): where R.sub.1 is an SO.sub.3.sup. group bound to a hydrogen H atom or to another atom or to an ammonium NH4 group or to a lysine salt or to an arginine salt or to a different monovalent cation, and R.sub.2 is an SO.sub.3.sup. group, in particular for making dye preparations for use in methods for the treatment of the bodies of humans or animals, for example for dyeing the internal limiting membrane ILM and/or epiretinal membranes EPRM in a surgical method which involves subsequent removal respectively of the ILM and/or of the EPRM; as well as a dye preparation having a density higher than 1.01 g/cm.sup.3 and comprising at least one dye and at least one agent for increasing its density which is a polymer with the empirical formula (C.sub.12H.sub.22O.sub.11.C.sub.3H.sub.5ClO).sub.n, and structure (II).

Disclosed is a compound of the general formula (1) RXSO.sub.3HN+(R.sub.aR.sub.bR.sub.c) (1), wherein i) R is selected from the group of C.sub.6 to C.sub.20 alkyl groups; ii) X is selected from the group a) C.sub.6H.sub.4, b) (OC2H4)nO, in which n=2 to 8, c) C(O)N(CH.sub.3)CH.sub.2CH.sub.2, and d) R1O(O)CCH2(R1O(O)C)CH, in which R.sup.1C.sub.6 to C.sub.20 alkyl; iii) at least two of the groups R.sub.a, R.sub.b, and R.sub.c are selected independently of each other from the group consisting of C.sub.3 to C.sub.12 alkyl and C.sub.3 to C.sub.12 hydroxyalkyl groups. Also disclosed are detergents containing the compound, and washing and cleaning methods using the compound, and methods for producing same.

Disclosed is a compound of the general formula (1) RXSO.sub.3HN+(R.sub.aR.sub.bR.sub.c) (1), wherein i) R is selected from the group of C.sub.6 to C.sub.20 alkyl groups; ii) X is selected from the group a) C.sub.6H.sub.4, b) (OC2H4)nO, in which n=2 to 8, c) C(O)N(CH.sub.3)CH.sub.2CH.sub.2, and d) R1O(O)CCH2(R1O(O)C)CH, in which R.sup.1C.sub.6 to C.sub.20 alkyl; iii) at least two of the groups R.sub.a, R.sub.b, and R.sub.c are selected independently of each other from the group consisting of C.sub.3 to C.sub.12 alkyl and C.sub.3 to C.sub.12 hydroxyalkyl groups. Also disclosed are detergents containing the compound, and washing and cleaning methods using the compound, and methods for producing same.