四氟硼酸铵, Ammonium tetrafluoroborate

硫氰酸铵, Ammonium Thiocyanate

α-当归内酯, alpha-Angelicalactone

蒽-9,10-二硼酸二频哪酯, Anthracene-9,10-diboronic acid bis(pinacol) ester

蒽酮, Anthrone

异丙氧基锑(III), Antimony(III) isopropoxide

碲化锑(III), Antimony(III) telluride

花生酸, Arachidic Acid

偶氮胂 III, Arsenazo III

硫化砷(III), Arsenic(III) sulfide

L-抗坏血酸 6-棕榈酸酯, L-Ascorbic acid 6-palmitate

D-天冬氨酸, D-Aspartic Acid

L-Aspartic acid 4-tert-butyl 1-methyl ester hydrochloride

金精三羧酸, Aurintricarboxylic acid

5-氮杂胞嘧啶, 5-Azacytosine