筛选产品
4,4′-亚甲基双(N,N-二甲基苯胺), 97.5 - 102.5% purity, powder, crystals or chunks
4,4′-亚甲基双(N,N-二甲基苯胺), certified reference material, TraceCERT®, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland