Sigma A4529 Aprotinin bovine lung 抑肽酶 1MGSigma A5960 Ascorbic acid L-维生素C 25G

Sigma A1153 Aprotinin bovine lung 抑肽酶 1MG

Sigma A8674 Antimycin A from Streptomyces sp. 25MG

Sigma A6426 Antifoam 204 消泡剂204 500G

Sigma A4559 Amyloid b-Protein Fragment 25-35 beta-淀粉样蛋白片断25-35 1MG

Sigma A1075 Amyloid b Protein Fragment 1-40 beta淀粉样蛋白片段1-40 .1MG

Sigma A9913 Amyloglucosidase solution Aspergillus niger 淀粉葡萄糖苷酶 10ML

Sigma A4382 4-Aminoantipyrine 4-氨基安替比林 50G

Sigma A8523 Amoxicillin 阿莫西林 1G

Sigma P8765 Ammonium pyrrolidinedithiocarbamate 吡咯烷二硫代氨基甲酸铵 5G

Sigma A3648 (3-Aminopropyl)triethoxysilane 3-氨基丙基三乙氧基硅烷 100ML

Sigma A7752 β-Alanine β-丙胺酸 100G

Sigma A7752 β-Alanine β-丙胺酸 100G

Sigma A7752 β-Alanine β-丙胺酸 100G

Sigma A6316 Alloxan tetrahydrate 阿脲,四氧嘧啶 10G

Sigma A7413 Alloxan monohydrate 阿脲,四氧嘧啶 10G