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Trioctylphosphine oxide (TOPO) is an organophosphorus compound with the formula OP(C8H17)3. It is an air-stable white solid at room temperature.
T 2267 (OTTO) Trioctylphosphine oxide, GR 99%+ Cas 78-50-2 - used as an extraction or stabilizing agent; also useful as a capping ligand for the production of quantum dots such as CdSe.