2,3-DIMETHYLPHENYLTHIOUREA

2,3-Dimethylpyridine-N-oxide

2,3-INDOLEDIONE 3-THIOSEMICARBAZONE

2',3'-O-Isopropylideneadenosine

2',3'-O-ISOPROPYLIDENECYTIDINE HYDROCHLORIDE

2,3-Pyrazinedicarboxylic acid

2,4,4,6-TETRABROMO-2,5-CYCLOHEXADIENONE