4,4'-(Ethyne-1,2-diyl)diphthalic Anhydride
http://www.cosmoscience.org/shop/fm-3b-e1164-44-ethyne-12-diyl-diphthalic-anhydride-74873
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4,4'-(Ethyne-1,2-diyl)diphthalic Anhydride for polyimide, resin, and polymer synthesis. High-purity aromatic anhydride. Keywords: polyimide precursor, aromatic anhydride, high-performance polymer.
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diphthalic%20Anhydride?unique=f421631)