Erythromycin

Erythromycin is the founding macrolide antibiotic produced by Saccharopolyspora erythraea, inhibiting bacterial 50S ribosomal protein synthesis, used for respiratory and skin infections and as a promotility agent. Simson Pharma's Erythromycin reference standard and impurities support the comprehensive compendial testing this complex multi-component natural antibiotic demands.

Simson Pharma Global Ltd. (UK) and Simson Pharma Global LLC (USA) supply high-quality Erythromycin Reference Standards, pharmacopoeial reference materials, and its related impurities to pharmaceutical manufacturers, CROs, analytical laboratories, universities, and regulatory organizations worldwide. To service the Europe and America market efficiently, Simson Pharma Limited has set up Simson Pharma Global Ltd. in United Kingdom and Simson Pharma Global LLC in USA respectively.

Pharmaceutical Reference Standards / Impurity Standards

Erythromycin
Erythromycin
  • CAT. No.E080000
  • CAS. No.114-07-8
  • Mol. F.C37H67NO13
  • Mol. W.733.93 g/mol
  • Stock Status:Instock
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Erythromycin Estolate
Erythromycin Estolate
  • CAT. No.E080001
  • CAS. No.3521-62-8
  • Mol. F.C40H71NO14.C12H26O4S
  • Mol. W.1056.39 g/mol
  • Stock Status:Instock
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Erythromycin A 6,9-Imino Ether
Erythromycin A 6,9-Imino Ether
  • CAT. No.E080002
  • CAS. No.99290-97-8
  • Mol. F.C37H66N2O12
  • Mol. W.730.93 g/mol
  • Stock Status:Instock
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Erythromycin Stearate
Erythromycin Stearate
  • CAT. No.E080003
  • CAS. No.643-22-1
  • Mol. F.C55H103NO15
  • Mol. W.1018.40 g/mol
  • Stock Status:Instock
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Erythromycin Ethylsuccinate EP Impurity G
Erythromycin Ethylsuccinate EP Impurity G
  • CAT. No.E080004
  • CAS. No.NA
  • Mol. F.C42H73NO16
  • Mol. W.848.03 g/mol
  • Stock Status:Instock
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Erythromycin EP Impurity H
Erythromycin EP Impurity H
  • CAT. No.E080005
  • CAS. No.992-65-4
  • Mol. F.C37H67NO14
  • Mol. W.249.93 g/mol
  • Stock Status:Instock
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Erythromycin EP Impurity F
Erythromycin EP Impurity F
  • CAT. No.E080006
  • CAS. No.105882-69-7
  • Mol. F.C37H65NO12
  • Mol. W.715.91 g/mol
  • Stock Status:Instock
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Erythromycin A oxime
Erythromycin A oxime
  • CAT. No.E080007
  • CAS. No.13127-18-9
  • Mol. F.C37H68N2O13
  • Mol. W.748.94 g/mol
  • Stock Status:Instock
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Erythromycin B
Erythromycin B
  • CAT. No.E080008
  • CAS. No.527-75-3
  • Mol. F.C37H67NO12
  • Mol. W.717.93 g/mol
  • Stock Status:Limited Stock
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Erythromycin C
Erythromycin C
  • CAT. No.E080009
  • CAS. No.1675-02-1
  • Mol. F.C36H65NO13
  • Mol. W.719.90 g/mol
  • Stock Status:Limited Stock
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Erythromycin EP Impurity D
Erythromycin EP Impurity D
  • CAT. No.E080010
  • CAS. No.23893-13-2
  • Mol. F.C37H65NO12
  • Mol. W.715.91 g/mol
  • Stock Status:Instock
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Erythromycin EP Impurity B
Erythromycin EP Impurity B
  • CAT. No.E080011
  • CAS. No.992-62-1
  • Mol. F.C36H65NO13
  • Mol. W.719.90 g/mol
  • Stock Status:Instock
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Erythromycin EP Impurity E
Erythromycin EP Impurity E
  • CAT. No.E080012
  • CAS. No.33396-29-1
  • Mol. F.C37H65NO12
  • Mol. W.715.92 g/mol
  • Stock Status:Instock
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Erythromycin ethyl succinate
Erythromycin ethyl succinate
  • CAT. No.E080013
  • CAS. No.1264-62-6
  • Mol. F.C43H75NO16
  • Mol. W.862.05 g/mol
  • Stock Status:Under Synthesis
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N-Demethyl-N-(ethylsuccinyl) Erythromycin
N-Demethyl-N-(ethylsuccinyl) Erythromycin
  • CAT. No.E080014
  • CAS. No.NA
  • Mol. F.C42H73NO16
  • Mol. W.848.03 g/mol
  • Stock Status:Custom Synthesis
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Erythromycin EP Impurity J
Erythromycin EP Impurity J
  • CAT. No.E080015
  • CAS. No.111321-02-9
  • Mol. F.C38H70N2O12
  • Mol. W.746.97 g/mol
  • Stock Status:Custom Synthesis
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Erythromycin thiocyanate
Erythromycin thiocyanate
  • CAT. No.E080017
  • CAS. No.7704-67-8
  • Mol. F.C38H68N2O13S
  • Mol. W.793.02 g/mol
  • Stock Status:Instock
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Erythromycin EP Impurity A
Erythromycin EP Impurity A
  • CAT. No.E080021
  • CAS. No.82230-93-1
  • Mol. F.C37H67NO14
  • Mol. W.749.94 g/mol
  • Stock Status:Under Synthesis
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Erythromycin EP Impurity C
Erythromycin EP Impurity C
  • CAT. No.E080022
  • CAS. No.41451-91-6
  • Mol. F.C37H65NO14
  • Mol. W.747.93 g/mol
  • Stock Status:Under Synthesis
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Pseudoerythromycin A Hemiketal
Pseudoerythromycin A Hemiketal
  • CAT. No.E080023
  • CAS. No.105900-46-7
  • Mol. F.C37H67NO13
  • Mol. W.733.93 g/mol
  • Stock Status:Instock
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Erythromycin Impurity E
Erythromycin Impurity E
  • CAT. No.E080024
  • CAS. No.857839-61-3
  • Mol. F.C37H65NO12
  • Mol. W.715.93 g/mol
  • Stock Status:Custom Synthesis
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Erythromycin A 9-methoxime
Erythromycin A 9-methoxime
  • CAT. No.E080025
  • CAS. No.53066-26-5
  • Mol. F.C38H70N2O13
  • Mol. W.762.97 g/mol
  • Stock Status:Custom Synthesis
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Erythromycin EP Impurity L
Erythromycin EP Impurity L
  • CAT. No.E080026
  • CAS. No.127955-44-6
  • Mol. F.C37H65NO14
  • Mol. W.747.91 g/mol
  • Stock Status:Instock
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Erythromycin Impurity M
Erythromycin Impurity M
  • CAT. No.E080027
  • CAS. No.NA
  • Mol. F.C37H67NO13
  • Mol. W.733.94 g/mol
  • Stock Status:Limited Stock
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2,4-O-Bis(trimethylsilyl)-6-O-methylerythromycin A 9-[O-(1- methoxy-1-methylethyl) Oxime
2,4-O-Bis(trimethylsilyl)-6-O-methylerythromycin A 9-[O-(1- methoxy-1-methylethyl) Oxime
  • CAT. No.E080028
  • CAS. No.119699-81-9
  • Mol. F.C48H94N2O14Si2
  • Mol. W.979.44 g/mol
  • Stock Status:Custom Synthesis
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2,4-O-Bis(trimethylsilyl)erythromycin A 9-O-(1-Ethoxy-1-methylethyl)oxime
2,4-O-Bis(trimethylsilyl)erythromycin A 9-O-(1-Ethoxy-1-methylethyl)oxime
  • CAT. No.E080029
  • CAS. No.119665-78-0
  • Mol. F.C48H94N2O14Si2
  • Mol. W.979.44 g/mol
  • Stock Status:Custom Synthesis
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Erythromycin EP Impurity I
Erythromycin EP Impurity I
  • CAT. No.E080030
  • CAS. No.546-57-6
  • Mol. F.C29H49NO8
  • Mol. W.539.70 g/mol
  • Stock Status:Instock
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Erythromycin Stearate for Impurity S Identification
Erythromycin Stearate for Impurity S Identification
  • CAT. No.E080031
  • CAS. No.643-22-1
  • Mol. F.C37H67NO13.C18H36O2
  • Mol. W.1018.40 g/mol
  • Stock Status:Under Synthesis
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Erythromycin A 9,11-Imino Ether
Erythromycin A 9,11-Imino Ether
  • CAT. No.E080032
  • CAS. No.161193-44-8
  • Mol. F.C37H66N2O12
  • Mol. W.730.93 g/mol
  • Stock Status:Custom Synthesis
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Erythromycin For Impurity M Identification
Erythromycin For Impurity M Identification
  • CAT. No.E080033
  • CAS. No.114-07-8
  • Mol. F.C37H67NO13
  • Mol. W.733.93 g/mol
  • Stock Status:Under Synthesis
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Erythronolide B
Erythronolide B
  • CAT. No.E080034
  • CAS. No.3225-82-9
  • Mol. F.C21H38O7
  • Mol. W.402.52 g/mol
  • Stock Status:Under Synthesis
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Erythromycin EP Impurity K
Erythromycin EP Impurity K
  • CAT. No.E080036
  • CAS. No.33442-56-7
  • Mol. F.C36H65NO12
  • Mol. W.703.90 g/mol
  • Stock Status:Under Synthesis
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Erythromycin EP Impurity L
Erythromycin EP Impurity L
  • CAT. No.E080038
  • CAS. No.127955-44-6
  • Mol. F.C37H65NO14
  • Mol. W.747.91 g/mol
  • Stock Status:Instock
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12-Deoxyerythromycin 9-Oxime
12-Deoxyerythromycin 9-Oxime
  • CAT. No.E080039
  • CAS. No.53274-43-4
  • Mol. F.C37H68N2O12
  • Mol. W.732.94 g/mol
  • Stock Status:Custom Synthesis
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Erythromycin ethyl fumarate
Erythromycin ethyl fumarate
  • CAT. No.E080040
  • CAS. No.122293-08-7
  • Mol. F.C43H73NO16
  • Mol. W.860.04 g/mol
  • Stock Status:Instock
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N-Nitroso Erythromycin EP Impurity B
N-Nitroso Erythromycin EP Impurity B
  • CAT. No.E080041
  • CAS. No.NA
  • Mol. F.C36H64N2O14
  • Mol. W.748.90 g/mol
  • Stock Status:Instock
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Erythromycin Impurity 3
Erythromycin Impurity 3
  • CAT. No.E080043
  • CAS. No.NA
  • Mol. F.C39H74N2O12
  • Mol. W.763.01 g/mol
  • Stock Status:Custom Synthesis
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Erythromycin Phthalate Impurity
Erythromycin Phthalate Impurity
  • CAT. No.E080045
  • CAS. No.NA
  • Mol. F.C45H71NO16
  • Mol. W.882.04 g/mol
  • Stock Status:Custom Synthesis
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Clarithromycin Impurity 2
Clarithromycin Impurity 2
  • CAT. No.E080046
  • CAS. No.1054651-74-9
  • Mol. F.C37H67NO13
  • Mol. W.733.93 g/mol
  • Stock Status:Custom Synthesis
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Clarithromycin Corresponding Impurity Of Erythromycin E
Clarithromycin Corresponding Impurity Of Erythromycin E
  • CAT. No.E080047
  • CAS. No.NA
  • Mol. F.C38H67NO14
  • Mol. W.761.94 g/mol
  • Stock Status:Custom Synthesis
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Clarithromycin Corresponding Impurity Of Erythromycin B
Clarithromycin Corresponding Impurity Of Erythromycin B
  • CAT. No.E080048
  • CAS. No.NA
  • Mol. F.C38H69NO12
  • Mol. W.731.95 g/mol
  • Stock Status:Custom Synthesis
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N-Nitroso-Desmethyl Erythromycin Ethyl Succinate
N-Nitroso-Desmethyl Erythromycin Ethyl Succinate
  • CAT. No.E080050
  • CAS. No.NA
  • Mol. F.C42H72N2O17
  • Mol. W.877.02 g/mol
  • Stock Status:Instock
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Erythromycin E N-oxide
Erythromycin E N-oxide
  • CAT. No.E080051
  • CAS. No.820978-34-5
  • Mol. F.C37H65NO15
  • Mol. W.763.91 g/mol
  • Stock Status:Custom Synthesis
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N,N-Didemethyl Erythromycin
N,N-Didemethyl Erythromycin
  • CAT. No.E080052
  • CAS. No.37152-22-0
  • Mol. F.C35H63NO13
  • Mol. W.705.90 g/mol
  • Stock Status:Custom Synthesis
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13-Desethyl,13-Propyl-Erythromycin A
13-Desethyl,13-Propyl-Erythromycin A
  • CAT. No.E080053
  • CAS. No.288584-78-1
  • Mol. F.C38H69NO13
  • Mol. W.747.96 g/mol
  • Stock Status:Custom Synthesis
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13-Deethyl-13-methylerythromycin
13-Deethyl-13-methylerythromycin
  • CAT. No.E080054
  • CAS. No.229318-98-3
  • Mol. F.C36H65NO13
  • Mol. W.719.90 g/mol
  • Stock Status:Custom Synthesis
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11-Dehydroxy Erythromycin A
11-Dehydroxy Erythromycin A
  • CAT. No.E080055
  • CAS. No.40554-78-7
  • Mol. F.C37H65NO12
  • Mol. W.715.90 g/mol
  • Stock Status:Custom Synthesis
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Erythromycin EP Impurity I
Erythromycin EP Impurity I
  • CAT. No.E080056
  • CAS. No.NA
  • Mol. F.C29H49NO8
  • Mol. W.539.70 g/mol
  • Stock Status:Custom Synthesis
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Erythromycin Nitroso Impurity 1
Erythromycin Nitroso Impurity 1
  • CAT. No.E080057
  • CAS. No.NA
  • Mol. F.C36H62N2O13
  • Mol. W.730.90 g/mol
  • Stock Status:Custom Synthesis
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Erythromycin Impurity G
Erythromycin Impurity G
  • CAT. No.E080058
  • CAS. No.147702-49-6
  • Mol. F.C39H69NO14
  • Mol. W.775.96 g/mol
  • Stock Status:Custom Synthesis
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Erythromycin Impurity 1
Erythromycin Impurity 1
  • CAT. No.E080060
  • CAS. No.200420-00-4
  • Mol. F.C37H70N2O12
  • Mol. W.734.97 g/mol
  • Stock Status:Custom Synthesis
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Erythromycin Impurity 2
Erythromycin Impurity 2
  • CAT. No.E080061
  • CAS. No.NA
  • Mol. F.C37H68N2O12
  • Mol. W.732.94 g/mol
  • Stock Status:Custom Synthesis
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Erythromycin Impurity 4
Erythromycin Impurity 4
  • CAT. No.E080062
  • CAS. No.119665-62-2
  • Mol. F.C49H96N2O14Si2
  • Mol. W.993.48 g/mol
  • Stock Status:Custom Synthesis
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8a-erythromycin B 6,9-Iminoether
8a-erythromycin B 6,9-Iminoether
  • CAT. No.E080063
  • CAS. No.NA
  • Mol. F.C37H66N2O11
  • Mol. W.714.93 g/mol
  • Stock Status:Custom Synthesis
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8a-Erythromycin A 9,12-iminoether
8a-Erythromycin A 9,12-iminoether
  • CAT. No.E080064
  • CAS. No.NA
  • Mol. F.C37H66N2O12
  • Mol. W.730.93 g/mol
  • Stock Status:Custom Synthesis
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Erythromycin Propionate
Erythromycin Propionate
  • CAT. No.E400000
  • CAS. No.134-36-1
  • Mol. F.C40H71NO14
  • Mol. W.789.99 g/mol
  • Stock Status:Instock
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Metabolites

Flurithromycin
Flurithromycin
  • CAT. No.E080044
  • CAS. No.82664-20-8
  • Mol. F.C37H66FNO13
  • Mol. W.751.93 g/mol
  • Stock Status:Custom Synthesis
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Isotope Labelled Compounds

Erythromycin D6
Erythromycin D6
  • CAT. No.E080019
  • CAS. No.959119-25-6
  • Mol. F.C37H61D6NO13
  • Mol. W.739.96 g/mol
  • Stock Status:Custom Synthesis
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Erythromycin Ethyl Succinate-D6
Erythromycin Ethyl Succinate-D6
  • CAT. No.E080035
  • CAS. No.NA
  • Mol. F.C43H69D6NO16
  • Mol. W.868.09 g/mol
  • Stock Status:Custom Synthesis
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Erythromycin Ethylsuccinate-13C-D3
Erythromycin Ethylsuccinate-13C-D3
  • CAT. No.E080049
  • CAS. No.NA
  • Mol. F.C4213CH72D3NO16
  • Mol. W.866.06 g/mol
  • Stock Status:Custom Synthesis
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Erythromycin 13C,D3
Erythromycin 13C,D3
  • CAT. No.E080059
  • CAS. No.2378755-50-9
  • Mol. F.C3613CH64D3NO13
  • Mol. W.737.90 g/mol
  • Stock Status:Custom Synthesis
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