2,3-DIHYDRO-1,4-BENZODIOXINE-2-CARBONYL CHLORIDE

5,6-DIHYDRO-1,4-DITHIIN-2,3-DICARBOXIMIDE

2,3-DIHYDRO-1H-BENZ[DE]ISOQUINOLINE

2-HYDROXYISONICOTINIC ACID

2-HYDROXYISONICOTINIC ACID

6,7-DICHLORO-1,4-DIHYDRO-2,3-QUINOXALINEDIONE

2,3-Dihydroxybenzoic acid

2,3-Dimethoxybenzoic acid