4,4'-(Piperazine-1,4-diyl)dianiline
https://www.sjzchem-pharm.com/shop/fm-3b-b6647-44-piperazine-14-diyl-dianiline-83822
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4,4'-(Piperazine-1,4-diyl)dianiline 1g : Aromatic diamine for epoxy curing, high-performance resins, coatings, and polymers.
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