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Towards Exhaustive and Automated High-Throughput Screening for Crystalline Polymorphs

机译:进行详尽,自动化的高通量筛选结晶多晶型物

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Methods capable of exhaustively screening for crystal polymorphism remain an elusive goal in solid-state chemistry. Particularly promising among the new generation of approaches is polymer-induced heteronucleation (PIHn), a tool utilizing hundreds of unique polymers for granting kinetic access to polymorphs. Here PIHn is redeployed in a high density format in which 288 distinct polymers, each acting as a heteronucleant, are arrayed on one substrate. This format allows determining the outcome of thousands of crystallizations in an automated fashion with only a few milligrams of sample. This technology enables the study of a broader range of targets, including preclinical candidates, facilitating determination of polymorphism propensity much earlier in the drug development process. Here the efficacy of this approach is demonstrated using four pharmaceutically relevant compounds: acetaminophen, tolfenamic acid, ROY, and curcumin,
机译:能够详尽筛选晶体多态性的方法仍然是固态化学中一个遥不可及的目标。在新一代方法中,特别有希望的是聚合物诱导的异核(PIHn),该工具利用数百种独特的聚合物为多晶型物提供动力学通道。在这里,PIHn以高密度格式进行了重新部署,其中将288种不同的聚合物(各自充当异核清洁剂)排列在一个基材上。这种格式可以仅几毫克的样品就可以自动确定数千种结晶的结果。这项技术可以研究更广泛的靶标,包括临床前候选药物,从而有助于在药物开发过程中更早地确定多态性倾向。在这里,使用四种与药物相关的化合物证明了该方法的有效性:对乙酰氨基酚,甲苯磺酸,ROY和姜黄素,

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