Patent ID: 11919884
Assignee: ZHEJIANG HUAHAI PHARMACEUTICAL CO., LTD
Field: Organic fine chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 9:
10. The method according to claim 1, wherein in the crystal enriched with L-camphorsulfonate of (2S,3R)-2-(2,4-difluorophenyl)-3-(5-fluoropyrimidin-4-yl)-1-(1H-1,2,4-triazol-1-yl)-2-butanol, in step (a) and step (a′) of the method 2, a ratio of L-camphorsulfonate of (2S,3R)-2-(2,4-difluorophenyl)-3-(5-fluoropyrimidin-4-yl)-1-(1H-1,2,4-triazol-1-yl)-2-butanol to L-camphorsulfonate of (2R,3S)-2-(2,4-difluorophenyl)-3-(5-fluoropyrimidin-4-yl)-1-(1H-1,2,4-triazol-1-yl)-2-butanol is greater than 1.