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Phosphite ester
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<p>In <a href="/facts/Organic_chemistry/djxhxaNg">organic chemistry</a>, a phosphite ester or organophosphite usually refers to an <a href="/facts/Organophosphorous/u4U9GS4z">organophosphorous</a> compound with the formula P(OR)3. They can be considered as <a href="/facts/Ester/FoUAIIw4">esters</a> of an unobserved tautomer <a href="/facts/Phosphorous_acid/4A4bHBTw">phosphorous acid</a>, H3PO3, with the simplest example being <a href="/facts/Trimethylphosphite/FQoRU3kM">trimethylphosphite</a>, P(OCH3)3. Some phosphites can be considered esters of the dominant tautomer of phosphorous acid (HP(O)(OH)2). The simplest representative is <a href="/facts/Dimethylphosphite/VPnvmlH2">dimethylphosphite</a> with the formula HP(O)(OCH3)2. Both classes of phosphites are usually colorless liquids. </p>