Of the 4,366 compounds of Group-I, 4,027 are involved in only one metabolic pathway class, 246 in two metabolic pathway classes, 54 in three metabolic pathway classes, 24 in four metabolic pathway classes, 9 in five metabolic pathway classes, 4 in six metabolic pathway classes, 2 in seven metabolic pathway classes, and none in eight or more metabolic pathway classes. Of the 3,137 compounds of Group-II, 2,820 are involved in only one metabolic pathway class, 226 in two metabolic pathway classes, 53 in three metabolic pathway classes, 23 in four metabolic pathway classes, 9 in five metabolic pathway classes, 4 in six metabolic pathway classes, 2 in seven metabolic pathway classes, and none in eight or more metabolic pathway classes.