کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9829413 | 1524490 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Growth promotion by H2O in organic solvent-selective isolation of a target polymorph
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This paper reports the marked promotion of crystal growth by small amounts of H2O in organic solvents for isolating the desired polymorph of a neurokinin-1 receptor antagonist. In dry organic solvents, regardless of solubility, the growth rate of the target polymorph was too slow for a robust and efficient crystallization process. It was found that the overall growth rate constant of the target polymorph increases linearly with H2O concentration in organic solvent along with a distinct crystal morphology transition from needles to platelets. An in situ real-time FTIR analyzer and an in situ real-time particle analyzer were employed in the growth kinetics measurements. The finding of this study enabled the rational design of a robust and efficient crystallization process with 100% polymorphic purity at >98% yield. The mechanistic role of H2O in the observed growth promotion is discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Crystal Growth - Volume 283, Issues 3â4, 1 October 2005, Pages 469-478
Journal: Journal of Crystal Growth - Volume 283, Issues 3â4, 1 October 2005, Pages 469-478
نویسندگان
Jian Wang, Christopher Loose, Jennifer Baxter, Dongwei Cai, Yaling Wang, Jean Tom, John Lepore,