Pregabalin Impurity 20

Chemical Name: 1-Deoxy-4-O-β-D-galactopyranosyl-1-[(4S)-4-(2-methylpropyl)-2-oxo-1-pyrrolidinyl]-β-D-fructose, Pyranose / Furanose Mixture

Smile: O[C@H]1[C@@H](CO)O[C@@H](O[C@@H]2[C@H](O)COC(CN3C[C@@H](CC(C)C)CC3=O)(O)[C@H]2O)[C@H](O)[C@H]1O.O[C@H]4[C@@H](CO)O[C@@H](O[C@H]5[C@H](O)C(CN6C[C@@H](CC(C)C)CC6=O)(O)O[C@@H]5CO)[C@H](O)[C@H]4O