Desacetyl DesMethyl LacosaMide Lacosamide Impurity 5(Lacosamide EP Impurity E) Lacosamide imp E Lacosamide impurity 5/Lacosamide EP Impurity E/Desacetyl Desmethyl Lacosamide/(2R)-2-Amino-3-hydroxy-N-(phenylmethyl)-propanamide Deacetyldesmethyllaccoamide (R)-2-Amino-N-benzyl-3-hydroxypropanamide Propanamide, 2-amino-3-hydroxy-N-(phenylmethyl)-, (2R)- (R)-2-amino-N-benzyl-3-hydroxypropanamide hydrochloride