Abstract: The invention relates to a compound selected from the group consisting of all stereoisomers and their mixtures of the compounds of general formulas (1)-(4), in which R1 is a straight-chained, branched or cyclic hydrocarbon group with up to 12 C-atoms and X+ is selected from the group consisting of H+, NH4+, mono, di or trivalent metal cations, NH4+, primary, secondary, tertiary or quaternary organic ammonium ions with up to 48 C-atoms, which can carry even more functional groups, hydrazinium ion (N2H5+), hydroxylammonium ion (NH3OH+), guanidinium ion (CN3H6+), and organic derivatives of (N2H5+), NH3OH+, and CN3H6+, which can carry even more functional groups, and similar.

Abstract: The invention relates to a compound selected from the group consisting of all stereoisomers and their mixtures of the compounds of general formulas (1)-(4), in which R1 is a straight-chained, branched or cyclic hydrocarbon group with up to 12 C-atoms and X+ is selected from the group consisting of H+, NH4+, mono, di or trivalent metal cations, NH4+, primary, secondary, tertiary or quaternary organic ammonium ions with up to 48 C-atoms, which can carry even more functional groups, hydrazinium ion (N2H5+), hydroxylammonium ion (NH3OH+), guanidinium ion (CN3H6+), and organic derivatives of (N2H5+), NH3OH+, and CN3H6+, which can carry even more functional groups, and similar.