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US 12,606,518 B2Granted
Crystalline form of L-serine and process of preparing same
AssigneeAstrogen, Inc.
InventorsHyung Chul Ryu, Su-Kyeong Hwang
Life of this patent
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Abstract
A novel crystalline form of L-serine and a method for preparing the same are disclosed. The novel crystalline form of L-serine has improved hygroscopicity and can be usefully used in the preparation of pharmaceutical agents.
Claims12
A crystalline form of L-serine represented by Formula 1 below:
- wherein the crystalline form has diffraction peaks at diffraction angles (2θ) of 19.06, 20.76, 22.86, 28.28, and 30.58 as determined by X-ray powder diffraction, and
- wherein the crystalline form has an additional diffraction peak at one or more diffraction angles (2θ) selected from the group consisting of 18.49, 36.89, 42.13, 42.96, and 44.17.
Dependencies are inferred from the claim text.