Certain three component ionic substituted pyridine compounds as intermediates

A compound according to Formula I and IV ##STR7## wherein:

• R.sup.2 is selected from the group hydrogen, C.sub.1 -C.sub.3 alkyl optionally substituted with methoxy or 1-3 fluorine and C.sub.1 -C.sub.2 alkoxy optionally substituted with 1-3 fluorine;
• R.sup.3 is selected from the group C.sub.1 -C.sub.3 alkyl substituted with methoxy or 1-3 fluorine;
• R.sup.4 is selected from the group SO.sub.2 R.sup.5 and C(O)N(R.sup.6).sub.2 ;
• R.sup.5 is selected from the group C.sub.1 -C.sub.2 alkyl optionally substituted with C.sub.1 -C.sub.2 alkoxy or 1-3 halogens independently selected from the group chlorine and fluorine;
• R.sup.6 is C.sub.1 -C.sub.2 alkyl;
• M is selected from the group Li, Na, K, Mg, Ca, NH.sub.4 and alkyl substituted NH.sub.4 ;
• X is selected from the group Br and OH;
• and
• n is 1 or 2.