132788-52-4 3H-1,2,4-Triazole-3,5(4H)-dione, 4-(2-(3,4-dihydro-6,7-dimethoxy-4-methyl-3-oxo-2-quinoxalinyl)ethyl)- 4-(2-(3,4-Dihydro-6,7-dimethoxy-4-methyl-3-oxo-2-quinoxalinyl)ethyl)-3H-1,2,4-triazole-3,5(4H)-dione 4-(2-(6,7-Dimethoxy-4-methyl-3-oxo-3,4-dihydroquinoxalinyl)ethyl)-1,2,4-triazoline-3,5-dione Dmeq-tad