1,3-Dibutyl-3,7-dihydro-1H-purine-2,6-dione

1,3,5,7-TETRAMETHYL-1H-(1,2,4)TRIAZOLO(4,3-A)PYRIMIDIN-4-YLIUM, PERCHLORATE

1,3,6,8-Tetraphenylpyrene

1,3-Dimethyl-3-phenyl-4,4-dipropyl-2,5-pyrrolidinedione

1,3-DIMETHYL-7-(1-NAPHTHYL-ME)-8-(1-PIPERIDINYL)-3,7-DIHYDRO-1H-PURINE-2,6-DIONE

1,3-DINITRO-2-(2,2,3,3,3-PENTAFLUORO-PROPOXY)-5-TRIFLUOROMETHYL-BENZENE

1,3-DIOXO-2-M-TOLYL-2,3-DIHYDRO-1H-ISOINDOLE-5-CARBOXYLIC ACID PROPYL ESTER

1,3-DIOXO-2-THIAZOL-2-YL-2,3-DIHYDRO-1H-ISOINDOLE-5-CARBOXYLIC ACID

1,3-Thiazinane-4-carboxylic acid hydrochloride

1,3,4-TRI-O-ACETYL-2-DEOXY-2-[(4-METHOXYBENZYLIDENE)AMINO]-6-O-[(4-METHYLPHENYL)SULFONYL]-BETA-L-GLUCOPYRANOSE

1,3,4,6-TETRA-O-ACETYL-2-DEOXY-2-[(TRIFLUOROACETYL)AMINO]-BETA-L-GLUCOPYRANOSE

1,3,5-TRICHLORO-2,4,6-TRIMETHYL-BENZENE

1,3,5-Trimethyl-4-iodo-1H-pyrazole

1,3,6-TRIMETHYL-2,4(1H,3H)-PYRIMIDINEDIONE

1,5-BIS-(4-ISOPROPYLPHENYL)-1,4-PENTADIEN-3-ONE