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Perfluoro-1,3-dim...
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DOPA-Phe-Phe-OH
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(2R,3R,4S,5R)-2-(...
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Properties | |
Properties | 【外观性状】无色至白色结晶或白色结晶性粉末,无臭或稍有香气。味极甜,稀释10000倍的水溶液仍有甜味。其稀溶液的甜度约为蔗糖的500倍,后味微苦。熔点228℃(分解)。饱和水溶液0.25%)呈酸性(pH值2.0)。在酸性条件下(pH值3.8以下)很不稳定(分解)。遇碱或其水溶液加热均可使之分解(碱比酸稳定)。微溶于水(25℃,1g/290ml;沸水,1g/25m1)而溶于碱性溶液(氨、氢氧化碱、碳酸碱等)。略溶于乙醇(1g/31m1),微溶于氯仿和乙醚。【熔点 】226-229 °C(lit.)【密度 】0.828【水溶解性 】3.3 g/L (20 ºC)【Merck 】14,8311【BRN 】6888 |
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Update | 2018-11-11sxy2019-1-19wf |