Abacavir
 Abacavir sulfate
 Abscisic acid
 Aceclofenac
 Acemetacin
 Acenaphthenequinone
 Acesulfame
 2-(4-Acetamidobenzylidene)malononitrile-a-dicyanomethylene-4-acetotoluidide
 4-Acetamido-2-methylphenol
 3-Acetamido-5-nitrobenzoic acid
 3-Acetamidophenylboronic acid
 4-Acetamidophenylboronic acid
 2-Acetamidothiophene
 6-Acetamino-2,4-dichloro-3-methyl-phenol
 Acetobromo-alpha-D-glucuronic acid methyl ester
 Acetobromofucose
 4-Acetoxy-2-azetidinone
 9-[(2-Acetoxyethoxy)methyl]-N2-acetyl guanine
 (3R,4R,5R)-5-(Acetoxymethyl)-3-methyltetrahydrofuran-2,3,4-triyl triacetate
 4-Acetoxyindole
 2-(4-Acetoxyphenyl) benzothiophene
 1-(Acetoxy)pyrrolidine-2,5-dione
 (3S,4R)-4-Acetoxy-3-[(R)-1-(tert-butyl-dimethylsilyloxy)ethyl]azetidin-2-one
 2-Acetylaminophenylboronic acid pinacol ester
 3-Acetylaminophenylboronic acid pinacol ester
 4-Acetylaminophenylboronic acid pinacol ester
 2-Acetylbenzo[b]thiophene
 N-Acetyl carnosine
 Acetyl cedrene
 N-4-Acetylcytidine
 13-Acetyl-9-dihydrobaccatin III
 6-Acetyl-8-fluoro-2H-benzo[b][1,4]oxazin-3(4H)-one
 1-Acetyl-2-imidazolidinone
 4-Acetylimidazole hydrochlororide
 3-Acetylindole
 5-Acetylindole
 1-Acetyl-4-iodo-1H-pyrazole
 1-Acetyl-4-(methylamino)piperidine
 1-Acetylpiperazine
 4-(1-Acetylpiperazin-4-yl)phenol
 1-Acetylpiperidin-4-amine
 1-Acetyl-4-piperidinecarboxylic acid
 N-Acetyl-4-piperidone
 N-Acetyl-L-prolinamide
 N-Acetyl-L-proline
 4-Acetyl-2,3,4,5-tetrahydro-1H-1,4-benzodiazepine
 3-Acetylthianaphthene
 (2S)-1-(3-Acetylthio-2-methyl-1-oxopropyl) -L-proline
 5-Acetyl-2-thiopheneboronic acid
 N-Acetyl-L-tryptophan