综合久久久久久I91视频在线免费观看I一区二区三区国产欧美I国产在线观看你懂得I中文免费在线观看Iav综合 日韩I香蕉视频在线观看免费

sigma試劑 1-Chlorobutane，1-氯丁烷，414255，-anhydrous, 99.5%

sigma試劑 Potassium thiocyanate ，硫氰酸鉀P2713 - BioXtra, ≥99.0%

sigma試劑三丁基膦 Tributylphosphine,247049 - mixture of isomers, 97%

sigma試劑 Cycloheximide,C7698 - from microbial, ≥94% （TLC）

sigma試劑 Cholera Toxin from Vibrio cholerae ,C8052 - ~95% （SDS-PAGE）, lyophilized powder, 1 × 105-1 × 106 units/mg protein

Sigma試劑 E-Toxate™ Endotoxin standard，貨號：E8029

sigma試劑β-乙基苯乙醇 ,β-Ethylphenethyl alcohol, 183482 - 98%

sigma試劑 α-Chlordane solution,α-氯丹 溶液,48192- analytical standard, 100 μg/mL in hexane, pkg of 1 mL

sigma試劑 γ-Chlordane solution,γ-氯丹 溶液,48193 - analytical standard, 100 μg/mL in hexane, ampule of 1 mL

sigma試劑Pesticide Surrogate Spike Mix,農藥替代加標混標,48460 - analytical standard, 200 μg/mL each component in acetone, ampule of 1 mL