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

sigma试剂 Potassium thiocyanate ，硫氰酸钾P2713 - BioXtra, ≥99.0%

sigma试剂三丁基膦 Tributylphosphine,247049 - mixture of isomers, 97%

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

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

Sigma试剂 E-Toxate™ Endotoxin standard，货号：E8029

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

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

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

sigma试剂Pesticide Surrogate Spike Mix,农药替代加标混标,48460 - analytical standard, 200 μg/mL each component in acetone, ampule of 1 mL