4,5-Dihydro-3-(4-pyridyl)-2H-naphtho<1,2-c>pyrazol, 4,5-dihydro-3-(4-pyridyl)-2H-naphtho[1,2-c]pyrazole, 4,5-dihydro-3-(pyridin-4-yl)-2H-naphtho[1,2-c]pyrazole, 4,5-DIHYDRO-3-(4-PYRIDINYL)-2H-BENZ[G]INDAZOLE, 3-(4-pyridyl)-4,5-dihydro-2H-benzo[g]indazole, 4,5-dihydro-3-(pyridin-4-yl)-2H-benz[g]indazole, 3-pyridin-4-yl-4,5-dihydro-1(2)H-benzo[g]indazole, 3-(pyridin-4-yl)-4,5-dihydro-2h-benzo[g]indazole