公开(公告)号：US12234254B2

公开(公告)日：2025-02-25

申请号：US17603759

申请日：2020-04-15

Applicant: BASF SE

Inventor： Brian Michael Green ,  Rachel Melissa Witek ,  Nadejda Pavlova ,  Matthew Richard Oberholzer

IPC: C07F9/30 ,  C12N9/06

Abstract: Methods for preparing crystalline L-glufosinate ammonium monohydrate are disclosed. The methods include forming a mixture comprising water, a water-miscible organic solvent, ammonium hydroxide, and a glufosinate starting material containing L-glufosinate ammonium and D-glufosinate ammonium. L-Glufosinate ammonium monohydrate is crystallized and separated from the mixture, providing L-glufosinate ammonium monohydrate Form B. Compositions and methods employing the crystalline L-glufosinate ammonium monohydrate are also described.

公开(公告)号：US20220177499A1

公开(公告)日：2022-06-09

申请号：US17603759

申请日：2020-04-15

Applicant: BASF SE

Inventor： Brian Michael Green ,  Rachel Melissa Witek ,  Nadejda Pavlova ,  Matthew Richard Oberholzer

IPC: C07F9/30 ,  C12N9/06

Abstract: Methods for preparing crystalline L-glufosinate ammonium monohydrate are disclosed. The methods include forming a mixture comprising water, a water-miscible organic solvent, ammonium hydroxide, and a glufosinate starting material containing L-glufosinate ammonium and D-glufosinate ammonium. L-Glufosinate ammonium monohydrate is crystallized and separated from the mixture, providing L-glufosinate ammonium monohydrate Form B. Compositions and methods employing the crystalline L-glufosinate ammonium monohydrate are also described.