蒽醌-2-羧酸, Anthraquinone-2-carboxylic Acid

碘化锑(III), Antimony(III) iodide

硒化锑(III), Antimony(III) selenide

D-(+)-阿糖醇, D-(+)-Arabitol

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

硫化砷(III), Arsenic(III) sulfide

L-(+)-抗坏血酸, L-(+)-Ascorbic acid

L-(+)-无水天冬酰胺酸, L-(+)-Asparagine

L-天冬氨酸 4-苄酯 1-叔丁酯盐酸盐, L-Aspartic acid 4-benzyl ester 1-tert-butyl ester hydrochloride

L-Aspartic Acid 1-Methyl Ester

1-偶氮-15-冠-5, 1-Aza-15-crown-5

7-氮杂吲哚-5-硼酸频哪醇酯, 7-Azaindole-5-boronic acid pinacol ester

壬二酸, Azelaic Acid

3-氮杂环丁烷甲醇 盐酸盐, 3-Azetidinemethanol Hydrochloride

4,4'-偶氮双(4-氰基戊酸), 4,4'-Azobis(4-cyanovaleric acid)