Lincomycin EP Impurity A

(2S,4R)-N-((1R,2R)-1-((3aS,4R,6R,7R,7aR)-2,7-dihydroxy-6-(methylthio)-2-oxidotetrahydro-3aH-[1,3,2]dioxaphospholo[4,5-c]pyran-4-yl)-2-hydroxypropyl)-1-methyl-4-propylpyrrolidine-2-carboxamide

(2R,3R,4S,5R,6R)-2-((1R,2R)-1-amino-2-hydroxypropyl)-6-(methylthio)tetrahydro-2H-pyran-3,4,5-triol

(S)-N-((1R,2R)-2-hydroxy-1-((2R,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(methylthio)tetrahydro-2H-pyran-2-yl)propyl)-1-methyl-4-propylidenepyrrolidine-2-carboxamide

Methyl 6,8-dideoxy-2,4-O-(hydroxyphosphoryl)-6-[[[(2S,4R)-1-methyl-4-propylpyrrolidin-
2-yl]carbonyl]amino]-1-thio-D-erythro-α-D-galacto-octopyranoside; (2S,4R)-N-((1R,2R)-1-((1R,5R,6R,8R,9S)-3,9-dihydroxy-8-(methylthio)-3-oxido-2,4,7-trioxa-3-phosphabicyclo[3.3.1]nonan-6-yl)-2-hydroxypropyl)-1-methyl-4-propylpyrrolidine-2-carboxamide

(2R,3R,4S,5R,6R)-4,5-dihydroxy-6-((1R,2R)-1-((2S,4R)-1-methyl-4-propylpyrrolidine-2-carboxamido)-2-(palmitoyloxy)propyl)-2-(methylthio)tetrahydro-2H-pyran-3-ylpalmitate