十二水合硫酸铁(III)铵, Ammonium iron(III) sulfate dodecahydrate

水合钼酸铵 (para), Ammonium molybdate (para) hydrate

磺酸铵, Ammonium Sulfamate

四氟硼酸铵, Ammonium tetrafluoroborate

三氟醋酸铵, Ammonium trifluoroacetate

茴香偶酰, Anisil

9,10-蒽并醌-2-磺酸钠盐水合物, 9,10-Anthraquinone-2-sulfonic acid sodium salt hydrate

氧化锑(III), Antimony(III) oxide

磷灰石, Apatite

L-精氨酸单盐酸盐, L-Arginine monohydrochloride

硫化砷(III), Arsenic(III) sulfide

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

L-天冬氨酸 4-苄酯, L-Aspartic Acid 4-Benzyl Ester

L-天冬氨酸 4-甲基酯 盐酸盐, L-Aspartic acid 4-methyl ester hydrochloride

4-氮杂吲哚, 4-Azaindole