1,3-Diaminoguanidine monohydrochloride

1,3-Dibromo-5,5-dimethylhydantoin

1,3-DICHLORO-2-(2-CHLORO-4-NITROPHENOXY)BENZENE

1,3-DIFLUOROTETRACHLOROACETONE

1,3-DIMETHOXY-5-(2-NITROPROP-1-ENYL)BENZENE

1,3-DIMETHYL-2-FLUOROIMIDAZOLINIUM BROMIDE

1,3-Dimethyl-2-imidazolidinone

1,3-DIMETHYL-5-MORPHOLINO-1H-PYRAZOLE-4-CARBALDEHYDE

Dimethyloldimethyl hydantoin