1,1,3,3-Tetramethylguanidine
1,3,5-Trimethoxybenzene
1,3-Acetonedicarboxylic Acid
1,3-Cyclohexanedione
1,3-Dimethylurea
1,4-Cyclohexanediol
1-(2-Chloroethyl)piperidine Hydro-chloride
1-(2-Pyridinyl)piperazine
1-Adamantanol
1-Chloromethyl Naphthalene
1-Hydroxy-2-naphthoic Acid
1-Indanone