Catalyst component for the polymerization of olefins comprising Mg, Ti and an electron donor of formula (I) ##STR00001## In which X and Y are selected from, R.sup.1, and OR.sup.1 and NR.sub.2, B is oxygen or sulphur S is sulphur, R.sup.1 is selected from C.sub.1-C.sub.15 hydrocarbon groups, optionally contain a heteroatom selected from halogen, P, S, N, O and Si, which can be fused together to form one or more cycles, R is hydrogen or R.sup.1 and A is a bivalent bridging group with chain length between the two bridging bonds being 1-10 atoms.

Catalyst component for the polymerization of olefins comprising Mg, Ti and an electron donor of formula (I) ##STR00001## In which X and Y are selected from, R.sup.1, and OR.sup.1 and NR.sub.2, B is oxygen or sulphur S is sulphur, R.sup.1 is selected from C.sub.1-C.sub.15 hydrocarbon groups, optionally contain a heteroatom selected from halogen, P, S, N, O and Si, which can be fused together to form one or more cycles, R is hydrogen or R.sup.1 and A is a bivalent bridging group with chain length between the two bridging bonds being 1-10 atoms.

What is described is a compound of formula III or IV

##STR00001## wherein R.sub.1 is a branched alkyl with 12 to 20 carbons; R.sub.2 is a linear alkyl with 5 to 10 carbons or a branched alkyl with 12 to 20 carbons; L.sub.1 and L.sub.2 are each a bond or a linear alkylene having 1 to 3 carbon atoms, when L.sub.3 is a bond; L.sub.1 and L.sub.2 are each a linear alkylene or alkenylene 5 to 18 carbon atoms, when L.sub.3 is an alkylene of 5 to 18 carbons; X is S or O; R.sub.3 is of a lower alkyl; and R.sub.4 and R.sub.5 are the same or different, each a lower alkyl; or a pharmaceutically acceptable salt thereof.

What is described is a compound of formula III or IV

##STR00001## wherein R.sub.1 is a branched alkyl with 12 to 20 carbons; R.sub.2 is a linear alkyl with 5 to 10 carbons or a branched alkyl with 12 to 20 carbons; L.sub.1 and L.sub.2 are each a bond or a linear alkylene having 1 to 3 carbon atoms, when L.sub.3 is a bond; L.sub.1 and L.sub.2 are each a linear alkylene or alkenylene 5 to 18 carbon atoms, when L.sub.3 is an alkylene of 5 to 18 carbons; X is S or O; R.sub.3 is of a lower alkyl; and R.sub.4 and R.sub.5 are the same or different, each a lower alkyl; or a pharmaceutically acceptable salt thereof.

What is described is a compound of formula I

##STR00001##

wherein R is a linear alkyl of 1 to 12 carbons, or a linear alkenyl or alkynyl of 2 to 12 carbons; L is a linear alkylene or alkenylene of 5 to 18 carbons; X is COO or OCO; Y is S or O; R.sub.1 is a linear or branched alkylene consisting of 1 to 6 carbons; and R.sub.2 and R.sub.3 are the same or different, consisting of a hydrogen or a linear or branched alkyl consisting of 1 to 6 carbons; and n is 1-6;
or a salt, a solvate, or a pharmaceutical formulation thereof.

What is described is a compound of formula I

##STR00001##

wherein R is a linear alkyl of 1 to 12 carbons, or a linear alkenyl or alkynyl of 2 to 12 carbons; L is a linear alkylene or alkenylene of 5 to 18 carbons; X is COO or OCO; Y is S or O; R.sub.1 is a linear or branched alkylene consisting of 1 to 6 carbons; and R.sub.2 and R.sub.3 are the same or different, consisting of a hydrogen or a linear or branched alkyl consisting of 1 to 6 carbons; and n is 1-6;
or a salt, a solvate, or a pharmaceutical formulation thereof.

What is described is a compound of formula (1) ##STR00001##
wherein R.sub.1 and R.sub.2 are the same or different, each a linear or branched alkyl with 1-9 carbons, or an alkenyl or alkynyl with 2 to 11 carbon atoms; L.sub.1 and L.sub.2 are the same or different, each a linear alkyl having 5 to 18 carbon atoms, or form a heterocycle with N; X.sub.1 is a bond, or is COO whereby L.sub.2-COOR.sub.2 is formed; X.sub.2 is S or O; L.sub.3 is a bond or a lower alkyl, or form a heterocycle with N; R.sub.3 is a lower alkyl; and R.sub.4 and R.sub.5 are the same or different, each a lower alkyl;
or a pharmaceutically acceptable salt thereof.

What is described is a compound of formula (1) ##STR00001##
wherein R.sub.1 and R.sub.2 are the same or different, each a linear or branched alkyl with 1-9 carbons, or an alkenyl or alkynyl with 2 to 11 carbon atoms; L.sub.1 and L.sub.2 are the same or different, each a linear alkyl having 5 to 18 carbon atoms, or form a heterocycle with N; X.sub.1 is a bond, or is COO whereby L.sub.2-COOR.sub.2 is formed; X.sub.2 is S or O; L.sub.3 is a bond or a lower alkyl, or form a heterocycle with N; R.sub.3 is a lower alkyl; and R.sub.4 and R.sub.5 are the same or different, each a lower alkyl;
or a pharmaceutically acceptable salt thereof.

Present invention refers to a novel and improved method of derivatization and detection of amino acid sequence and/or identification of proteins, peptides by a new derivatization compound. Precisely, the method discloses a novel approach to derivatization of peptides or proteins by compounds comprising two or more sulfonyl groups and analysis of derivatized analytes in negative mode of operation of mass spectrometer. This method allows unambiguous analysis of amino acid sequence of long-chain peptides/proteins. Also, the invention discloses a novel synthesis procedure of 5-formyl-benzene-1,3-disulphonic acid as derivatization compound.

Present invention refers to a novel and improved method of derivatization and detection of amino acid sequence and/or identification of proteins, peptides by a new derivatization compound. Precisely, the method discloses a novel approach to derivatization of peptides or proteins by compounds comprising two or more sulfonyl groups and analysis of derivatized analytes in negative mode of operation of mass spectrometer. This method allows unambiguous analysis of amino acid sequence of long-chain peptides/proteins. Also, the invention discloses a novel synthesis procedure of 5-formyl-benzene-1,3-disulphonic acid as derivatization compound.