4-AMIDINOPYRIDINE HYDROCHLORIDEPYRIDINE-4-CARBOXIMIDAMIDE HYDROCHLORIDE

4-AMINO-1,3,5-TRIAZINE-2-THIOL

4-AMINO-2,3,5,6-TETRAFLUOROBENZAMIDE

4-amino-2,5-dimethoxybenzenesulphonamide

4-AMINO-2-CHLOROPYRIMIDINE-5-CARBONITRILE

4-AMINO-2-MERCAPTOPYRIMIDINE

4-AMINO-2-MORPHOLINO-5-PYRIMIDINECARBONITRILE,97