sigma试剂 (R)-(+)-Atenolol ,(R)-(+)-阿替洛尔 ,330884 - 99%
sigma试剂 NG,NG-Dimethylarginine dihydrochloride,D4268-10MG,698.49元
sigma试剂 Chlorpyrifos-methyl ,甲基毒死蜱.45396 - PESTANAL®, analytical standard
sigma试剂 Push Button Valve ,按钮阀,22284 - for use with VICI Series C and D Pressure-Lok syringes
sigma试剂 Amylose from potato used as amylase substrate ,A0512 ,CAS号: 9005-82-7 ,线性分子式 (C6H10O5)n
Sigma试剂吲哚-3-甲醛 ,Indole-3-carboxaldehyde ,129445 - 97%