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

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

2,3-Dihydro-2-oxo-1-indolizinecarbonitrile

2,3-DIHYDRO-5H-1,4-BENZODIOXIPIN-5-ONE

2,3-DIHYDRO-6-ISOTHIOCYANATO-1,4-PHTHALAZINEDIONE

2,3-DIHYDROBENZO[B]FURAN-5-CARBOTHIOAMIDE

5-(AMINOMETHYL)-2,3-DIHYDROBENZO[B]FURAN

1,4-DIHYDRO-6-METHYLQUINOXALINE-2,3-DIONE

2,3-Dihydroxybenzoic acid

2,3-Dihydroxynaphthalene

Sodium 2,3-dihydroxynaphthalene-6-sulfonate