L-(+)-抗坏血酸, L-(+)-Ascorbic acid

D-(-)-天冬酰胺 单水合物, D-(-)-Asparagine monohydrate

L-天冬氨酸钠一水合物, L-Aspartic acid monosodium salt monohydrate

D-天冬氨酸二甲酯盐酸盐，98％, D-Aspartic acid dimethyl ester hydrochloride

(7-氮杂-1H-苯并三唑-1-基氧)三(1-吡咯烷基)磷 六氟磷酸盐, (7-Aza-1H-benzotriazol-1-yloxy)tri(1-pyrrolidinyl)phosphonium hexafluorophosphate

6-Azaindole

6-氮尿嘧啶, 6-Azauracil

(S)-(-)-氮杂环丁烷-2-甲酸, (S)-(-)-Azetidine-2-carboxylic acid

11-叠氮基十一烷基三甲氧基硅烷, 11-Azidoundecyltrimethoxysilane

薁, Azulene

氧化铝钡, Barium aluminum oxide

碳酸钡, Barium carbonate

钡铁氧体, Barium dodecairon nonadecaoxide

偏磷酸钡, Barium metaphosphate

硫酸钡, Barium sulfate