2,2',3,4,4',5',6-七氯联苯

865-47-4 95%

521-61-9 分析标准品，>98%

7440-05-3 5.0% Pd basis

7440-05-3 10% Pd basis

7447-40-7 SP

7758-11-4 AR，98%

7790-62-7 98% 调货6-8周

333-20-0 GR，99%

75-58-1 98%

149-73-5 99.56%，无水级

9004-35-7 乙酰基39.8 wt % ，羟基3.5 wt %，M=4万

85712-15-8 95%

17865-85-9 97%

541-01-5 96%

995-82-4 95%

70374-39-9 99%

40g/L

136379-59-4 100μg/mL in acetonitrile：H2O(1:1)

120068-37-3 见证书 订货1-2周

1217449-45-0 0.5ppm 订货1-2周