四水合钼酸铵, Ammonium molybdate (para) tetrahydrate

过铼酸铵, Ammonium perrhenate(VII)

L-(+)-酒石酸铵, Ammonium L-(+)-tartrate

四氟硼酸铵, Ammonium tetrafluoroborate

三氟醋酸铵, Ammonium trifluoroacetate

苯胺-2,5-二磺酸, Aniline-2,5-disulfonic acid

9-蒽醛, 9-Anthraldehyde

3-(9-蒽基)丙酸, 3-(9-Anthryl)propionic acid

氧化锑, Antimony(III) oxide

安替比林, Antipyrine

D-精氨酸, D-Arginine

硒化砷, Arsenic(III) selenide

碲化砷(III), Arsenic(III) telluride

DL-天门冬素一水化合物, DL-Asparagine Monohydrate

L-天门冬氨酸, L-Aspartic Acid