西玛津标准品 Simetryn 0.25 g C16950000 Simetryn (10 ug/ml乙腈) 10 ml L16950000AL Simaine (100 ug/ml乙腈) 10 ml XA16950000AL Atraine desisopropyl 0.25 g C10320300 Simaine-2-hydroxy 50 mg C16955000