S-乙酰基硫代碘化胆碱, S-Acetylthiocholine iodide

N-乙酰-DL-色氨酸, N-Acetyl-DL-tryptophan

顺-乌头酸, cis-Aconitic acid

4-丙烯酰吗啉, 4-Acryloylmorpholine

1-金刚烷乙酸, 1-Adamantaneacetic Acid

1-金刚烷甲醇, 1-Adamantanemethanol

2-(1-金刚烷基)-4-甲基苯酚, 2-(1-Adamantyl)-4-methylphenol

腺苷-5'-三磷酸二钠盐水合物, Adenosine-5'-triphosphate disodium salt hydrate

琼脂粉, Agar powder

琼脂糖ME,用作大分子电泳, Agarose ME

L-丙胺酸, L-Alanine

DL-丙氨酸乙酯盐酸盐, DL-Alanine ethyl ester hydrochloride

β-丙氨酸甲酯 盐酸盐, beta-Alanine methyl ester hydrochloride

海藻酸钠, Alginic acid sodium salt

尿囊素, Allantoin