Erythromycin Impurities

  • Erythromycin Impurities

  • Impurity: Erythromycin EP Impurity B (Erythromycin USP Related Compound N)
  • CAS No: 992-62-1
  • Chemical Name: (3R,4S,5S,6R,7R,9R,11R,12R,13S,14R)-4-[(2,6-dideoxy-3-C-methyl-3-O-methyl-a-L-ribo-hexopyranosyl)oxy]-14-ethyl-7,12,13-trihydroxy-3,5,7,9,11,13-hexamethyl-6-[[3,4,6-trideoxy-3-(methylamino)-ß-D-xylo-hexopyranosyl]oxy]oxacyclotetradecane-2,10-dione (3?-N-demethylerythromycin A)

  • Erythromycin EP Impurities

  • Impurity: Erythromycin EP Impurity D (Anhydro Erythromycin A)
  • CAS No: 23893-13-2
  • Chemical Name: (1S,2R,3R,4S,5R,8R,9S,10S,11R,12R,14R)-9-[(2,6-dideoxy-3-C-methyl-3-O-methyl-a-L-ribo-hexopyranosyl)oxy]-5-ethyl-3-hydroxy-2,4,8,10,12,14-hexamethyl-11-[[3,4,6-trideoxy-3-(dimethylamino)-ß-D-xylo-hexopyranosyl]oxy]-6,15,16-trioxatricyclo[10.2.1.11,4]hexadecan-7-one (anhydroerythromycin A)

  • Erythromycin EP Impurities

  • Impurity: Erythromycin EP Impurity E (Erythromycin A Enol Ether)
  • CAS No: 33396-29-1
  • Chemical Name: (2R,3R,4S,5R,8R,9S,10S,11R,12R)-9-[(2,6-dideoxy-3-C-methyl-3-O-methyl-a-L-ribo-hexopyranosyl)oxy]-5-ethyl-3,4-dihydroxy-2,4,8,10,12,14-hexamethyl-11-[[3,4,6-trideoxy-3-(dimethylamino)-ß-D-xylo-hexopyranosyl]oxy]-6,15-dioxabicyclo[10.2.1]pentadec-1(14)-en-7-one (erythromycin A enol ether)

  • Erythromycin EP Impurities

  • Impurity: Erythromycin EP Impurity F (Pseudoerythromycin A Enol Ether)
  • CAS No: 105882-69-7
  • Chemical Name: (2R,3R,6R,7S,8S,9R,10R)-7-[(2,6-dideoxy-3-C-methyl-3-O-methyl-a-L-ribo-hexopyranosyl)oxy]-3-[(1R,2R)-1,2-dihydroxy-1-methylbutyl]-2,6,8,10,12-pentamethyl-9-[[3,4,6-trideoxy-3-(dimethylamino)-ß-D-xylo-hexopyranosyl]oxy]-4,13-dioxabicyclo[8.2.1]tridec-1(12)-en-5-one (pseudoerythromycin A enol ether),

  • Erythromycin EP Impurities

  • Impurity: Erythromycin EP Impurity G
  • CAS No: N/A
  • Chemical Name: ethyl 4-(((2S,3R,4S,6R)-2-(((3R,4S,5S,6R,7R,9R,11R,12R,13S,14R)-14-ethyl-7,12,13-trihydroxy-4-(((2R,4R,5S,6S)-5-hydroxy-4-methoxy-4,6-dimethyltetrahydro-2H-pyran-2-yl)oxy)-3,5,7,9,11,13-hexamethyl-2,10-dioxooxacyclotetradecan-6-yl)oxy)-3-hydroxy-6-methyltetrahydro-2H-pyran-4-yl)(methyl)amino)-4-oxobutanoate

  • Erythromycin EP Impurities

  • Impurity: Erythromycin EP Impurity H(Erythromycin N-Oxide)
  • CAS No: 992-65-4
  • Chemical Name: (2S,3R,4S,6R)-2-((3R,4S,5S,6R,7R,9R,11R,12R,13S,14R)-14-ethyl-7,12,13- trihydroxy-4-((2R,4R,5S,6S)-5-hydroxy-4-methoxy-4,6- dimethyltetrahydro-2H-pyran-2-yloxy)-3,5,7,9,11,13-hexamethyl-2,10- dioxooxacyclotetradecan-6-yloxy)-3-hydroxy-N,N,6-trimethyltetrahydro- 2H-pyran-4-amine oxide

  • Erythromycin EP Impurities

  • Impurity: Erythromycin EP Impurity I(erythralosamine)
  • CAS No: 546-57-6
  • Chemical Name: (1S,4S,5R,8R,9S,10S,11R,12R,14R)-5-ethyl-9-hydroxy-2,4,8,10,12,14-hexamethyl-11-[[3,4,6-trideoxy-3-(dimethylamino)-ß-D-xylo-hexopyranosyl]oxy]-6,15,16-trioxatricyclo[10.2.1.11,4]hexadec-2-en-7-one (erythralosamine)

  • Erythromycin EP Impurities

  • Impurity: Erythromycin EP Impurity J( Pseudoerythromycin A hemiketal)
  • CAS No: 105900-46-7
  • Chemical Name: (1RS,2R,3R,6R,7S,8S,9R,10R,12R)-7-[(2,6-dideoxy-3-C-methyl-3-O-methyl-a-L-ribo-hexopyranosyl)oxy]-3-[(1R,2R)-1,2-dihydroxy-1-methylbutyl]-1-hydroxy-2,6,8,10,12-pentamethyl-9-[[3,4,6-trideoxy-3-(dimethylamino)-ß-D-xylo-hexopyranosyl]oxy]-4,13-dioxabicyclo[8.2.1]tridecan-5-one (pseudoerythromycin A hemiketal)

  • Erythromycin EP Impurities

  • Impurity: Erythromycin EP Impurity K(Erythromycin D)
  • CAS No: 33442-56-7
  • Chemical Name: (3R,4S,5S,6R,7R,9R,11R,12S,13R,14R)-4-[(2,6-dideoxy-3-C-methyl-a-L-ribo-hexopyranosyl)oxy]-14-ethyl-7,12-dihydroxy-3,5,7,9,11,13-hexamethyl-6-[[3,4,6-trideoxy-3-(dimethylamino)-ß-D-xylo-hexopyranosyl]oxy]oxacyclotetradecane-2,10-dione

  • Erythromycin EP Impurities

  • Impurity: Erythromycin EP Impurity L(N-Formyl Erythromycin )
  • CAS No: 127955-44-6
  • Chemical Name: (3R,4S,5S,6R,7R,9R,11R,12R,13S,14R)-4-[(2,6-dideoxy-3-C-methyl-3-O-methyl-a-L-ribo-hexopyranosyl)oxy]-14-ethyl-7,12,13-trihydroxy-3,5,7,9,11,13-hexamethyl-6-[[3,4,6-trideoxy-3-(formylmethylamino)-ß-D-xylohexopyranosyl]oxy]oxacyclotetradecane-2,10-dione (3?-N-demethyl-3-N-formyl erythromycin A)

  • Erythromycin Impurities

  • Impurity: Erythromycin(Erythromycin A)
  • CAS No: 114-07-8
  • Chemical Name: (3R,4S,5S,6R,7R,9R,11R,12R,13S,14R)-4-[(2,6-Dideoxy-3-C-methyl-3-O-methyl-a-L-ribo-hexopyranosyl)oxy]-14-ethyl-7,12,13-trihydroxy-3,5,7,9,11,13-hexamethyl-6-[(3,4,6-trideoxy-3-dimethylamino-ß-D-xylo-hexopyranosyl)-oxy]oxacyclotetradecane-2,10-dione-pentamethyl-6-[[3,4,6-trideoxy-3-(dimethylamino)--D-xylo-hexop

  • Erythromycin Impurites

  • Impurity: Erythromycin B(12-Deoxy Erythromycin)
  • CAS No: 527-75-3
  • Chemical Name: (3R,4S,5S,6R,7R,9R,11R,12S,13S,14R)-4-[(2,6-Dideoxy-3-C-methyl-3-O-methyl-a-L-ribo-hexopyranosyl)oxy]-14-ethyl-7,13-dihydroxy-3,5,7,9,11,13-hexamethyl-6-[(3,4,6-trideoxy-3-dimethylamino-ß-D-xylo-hexopyranosyl)-oxy]oxacyclotetradecane-2,10-dione

  • Erythromycin Impurities

  • Impurity: Erythromycin C(3-O-Desmethyl Erythromycin)
  • CAS No: N/A
  • Chemical Name: (3R,4S,5S,6R,7R,9R,11R,12R,13S,14R)-4-[(2,6-Dideoxy-3-C-methyl-3-hydroxy-a-L-ribo-hexopyranosyl)oxy]-14-ethyl-7,12,13-trihydroxy-3,5,7,9,11,13-hexamethyl-6-[(3,4,6-trideoxy-3-dimethylamino-ß-D-xylo-hexopyranosyl)-oxy]oxacyclotetradecane-2,10-dione