阅读说明：本技术 恶拉戈利与乙胺嘧啶的共晶型a及其制备方法和用途 (Co-crystal form A of oxaagolide and pyrimethamine, and preparation method and application thereof ) 是由 任国宾 季伟杰 弋东旭 黄嘉骏 于 2019-07-31 设计创作，主要内容包括：本发明涉及药物晶体技术领域,具体涉及一种恶拉戈利与乙胺嘧啶的共晶型A及其制备方法和用途,使用Cu-Kɑ辐射,所述共晶型A以2θ角度表示的X-射线粉末衍射,在8.1±0.2°、12.2±0.2°、13.3±0.2°、21.1±0.2°处有特征峰,本发明提供的共晶型A纯度较高,具有良好的光照稳定性、高温稳定性、高湿稳定性和加速稳定性,易保存,在相对低湿度的条件下引湿缓慢,相对湿度从0升至60％RH时,共晶型A的引湿增重不高于1.08％,方便对生产条件的控制,制备工艺简单,质量稳定,易于大规模工业生产。(The invention relates to the technical field of drug crystals, in particular to a co-crystal form A of oxagorskili and pyrimethamine and a preparation method and application thereof, wherein Cu-K alpha radiation is used, and X-ray powder diffraction represented by a 2 theta angle of the co-crystal form A has characteristic peaks at 8.1 +/-0.2 degrees, 12.2 +/-0.2 degrees, 13.3 +/-0.2 degrees and 21.1 +/-0.2 degrees.)