small molecule

Non-polymeric molecules.

Specific

alcohol aldehyde amide amidine amine aminidine ammonium compound anhydride carbamate carbon monoxide (CO) carboxylate Cl2 (chlorine gas) coenzyme cyanate diborane (B2H6) DNA base lesion ester ether fluorescent dye halogenated hydrocarbon hydrazine hydrocarbon hydrogen sulfide (H2S) imine intermediary metabolite ketone methyl mercury (MeHg, HgCH3) molecular anion molecular carrier N2 (molecular nitrogen, nitrogen gas) nitric oxide (NO, endothelium derived relaxation factor {EDRF}) nitrile nitrite nitro compound nitrogen dioxide (NO2.) nitrosourea organochloride organoselenium compound oxide oxime ozone (O3) phenylarsine oxide; oxyphenylarsine phosphate phospine; phosphane; phosphorus trihydride quinone ring structure selenide semicarbazide; aminourea silicon dioxide (silica, SiO2, quartz) sulfur compound thiocarbamate thioether triazene unclassified molecule urea (carbamide)