Diagnostic marker

A diagnostic marker, comprising:

• a detection system;
• and
• a fluorescent functional group that is bound to the detection system and represented by the following formula:
• ##STR14## wherein R.sup.1 and R.sup.2 are independently selected from the group consisting of hydrogen, alkyl group, aryl group, alkoxy group, and sulfonic acid group;
• R.sup.3 is selected from the group consisting of alkyl group, sulfonic acid-alkyl group, and amino-substituted alkyl group;
• X.sup.- is an anion;
• Y is a C.sub.1 -C.sub.10 alkylene group or a C.sub.1 -C.sub.10 alkylene group containing at least one atom selected from the group consisting of oxygen, nitrogen, and sulfur;
• and U is a site at which the detection system binds.

A diagnostic marker, comprising:

• a detection system;
• and
• a fluorescent functional group that is bound to the detection system and represented by the following formula:
• ##STR15## wherein R.sup.4 and R.sup.5 are independently selected from the group consisting of hydrogen, alkyl group, alkoxy group, and sulfonate group;
• R.sup.6 is an alkylene group;
• M.sup.+ is an alkali metal group;
• Q.sup.- is selected from the group consisting of halogen ion, perchlorate ion, and thiocyanate ion;
• Y is a C.sub.1 -C.sub.10 alkylene group or a C.sub.1 -C.sub.10 alkylene group containing at least one atom selected from the group consisting of oxygen, nitrogen, and sulfur;
• and U is a site at which the detection system binds.

A compound represented by the following formula:

• ##STR16## wherein R.sup.1 and R.sup.2 are independently selected from the group consisting of hydrogen, alkyl group, aryl group, alkoxy group, and sulfonic acid group;
• R.sup.3 is selected from the group consisting of alkyl group, sulfonic acid-alkyl group, and amino-substituted alkyl group;
• and Z is selected from the group consisting of the following:
• ##STR17## W and Y are independently a C.sub.1 -C.sub.10 alkylene group or a C.sub.1 -C.sub.10 alkylene group containing at least one atom selected from the group consisting of oxygen, nitrogen, and sulfur.

A compound represented by the following formula:

• ##STR18## wherein R.sup.1 and R.sup.2 are independently selected from the group consisting of hydrogen, alkyl group, aryl group, alkoxy group, and sulfonic acid group;
• R.sup.3 is selected from the group consisting of alkyl group, sulfonic acid-alkyl group, and amino-substituted alkyl group;
• X.sup.- is an anion;
• and Z is selected from the group consisting of the following:
• ##STR19## W and Y are independently a C.sub.1 -C.sub.10 alkylene group or a C.sub.1 -C.sub.10 alkylene group containing at least one atom selected from the group consisting of oxygen, nitrogen, and sulfur.

A compound represented by the following formula:

• ##STR20## wherein R.sup.4 and R.sup.5 are independently selected from the group consisting of hydrogen, alkyl group, alkoxy group, and sulfonate group;
• R.sup.6 is an alkylene group;
• M.sup.- is an alkali metal group;
• Q.sup.- is selected from the group consisting of halogen ion, perchlorate ion, and thiocyanate ion;
• and Z is selected from the group consisting of the following:
• ##STR21## W and Y are independently a C.sub.1 -C.sub.10 alkylene group or a C.sub.1 -C.sub.10 alkylene group containing at least one atom selected from the group consisting of oxygen, nitrogen, and sulfur.