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露置空氣中逐漸變色。易溶于熱水、乙醇、乙醚和稀乙酸,微溶于冷水。3-Indolepropionic acid is an effective inhibitor of aggregation of misfolded β-amyloid protein (Abeta). Three-component one-pot procedure has been reported to assemble 3-indolepropionic acids.