Benzenamine, 4,4'-(9H-fluoren-9-ylidene)bis-
https://www.dgibt.com/shop/fm-in-da001niz-benzenamine-44-9h-fluoren-9-ylidene-bis-82518
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Fluorene-Based Diamine, high-purity monomer for polymer synthesis, epoxy resins, and lab applications.
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