四氟硼酸铵, Ammonium tetrafluoroborate

钨酸铵水合物, Ammonium metatungstate hydrate

蒽-9-羧酸, Anthracene-9-carboxylic acid

蒽酮, Anthrone

氧化锑(III), Antimony(III) oxide

D-(+)-阿糖醇, D-(+)-Arabitol

偶氮胂 III, Arsenazo III

碲化砷(III), Arsenic(III) telluride

L-(+)-天冬酰胺酸,一水合物, L-(+)-Asparagine monohydrate

L-天冬氨酸 4-叔-丁基酯, L-Aspartic Acid 4-tert-Butyl Ester

4-氮杂苯并咪唑, 4-Azabenzimidazole

6-Azaindole

壬二酸, Azelaic Acid

12-叠氮基十二烷基磷酸, 12-Azidododecylphosphonic acid

氧化偶氮苯, Azoxybenzene