关注微信公众号查券更方便
扬巴三乙醇胺97%TEOA冷却液原料水泥研磨助剂巴斯夫三乙醇胺99
R12001733 5-碘尿苷 1024-99-3 97% (HPLC)
α-松油烯 α-Terpinene CAS 99-86-5 97% 实验试剂 现货
R120014220 2-溴-5-氟苯胺 1003-99-2 Reagent,97%