1,4-Diamino-2,3-Dihydroanthraquinone
1,4-Diamino-2,3-dihydroanthraquinone is a partially reduced anthraquinone bearing two amino groups, supplied as a dark violet to black powder at 98% purity.
The molecule sits between the fully aromatic quinone and its leuco form: the saturated 2,3-positions interrupt conjugation, shifting the colour from deep blue to violet, and the two amino groups make it reactive towards oxidation, acylation and condensation. This makes it a valuable intermediate for building substituted aminoanthraquinone colourants and for studying redox behaviour in the anthraquinone series.
The powder should be kept in a closed container, away from light, heat and oxidising agents, since oxidation converts it towards the fully conjugated quinone.
• Anthraquinone dye synthesis: a precursor to aminoanthraquinone disperse dyes and solvent dyes with violet to blue shades.
• Oxidation substrate: oxidises to 1,4-diaminoanthraquinone, a widely used colourant intermediate for polyester and acetate fibres.
• Leuco dye and imaging chemistry: applied in redox-based colour-forming systems and in the preparation of latent image materials.
• Organic electronics research: used as a redox-active building block in studies of quinone-based semiconductors and charge-transfer salts.
Product Name: 1,4-Diamino-2,3-Dihydroanthraquinone
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