120223-04-3 150151-10-3 5-(1-(3,4-Dimethoxybenzoyl)-1,2,3,4-tetrahydrochinolin-6-yl)-6-methyl-3,6-dihydro-2H-1,3,4-thiadiazin-2-on EMD 53,998 EMD 53998 Emd-53998 Quinoline, 6-(3,6-dihydro-6-methyl-2-oxo-2H-1,3,4-thiadiazin-5-yl)-1-(3,4-dimethoxybenzoyl)-1,2,3,4-tetrahydro-