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Impurities Metabolites and labeled Isotopes of following API’s are offered. If you don’t find your requirement please send a mail at or fill and send Request A Quote  form , to know possibility of them being custom synthesized.
Products are offered from few milligrams to 500mg packing, higher scale could be offered on request.
 Imatinib Mesylate

N-Desmethyl Imatinib 



Imatinib N-Oxide

N-Desmethyl Impiramine


Imipramine N-Oxide

N-Desmethyl Loperamide


Loperamide Impurity F

Loperamide Impurity H



Levomepromazine Impurity A

Levomepromazine Impurity B

N-Desmethyl Levomepromazine

O-Desmethyl Levomepromazine

Levomepromazine - d3



Loratidine Impurity A

N - Methyl loratidine

Loratidine Impurity B


Lofepramine Impurity A

Lofepramine Impurity B

Lofepramine Impurity C

Lofepramine Impurity D

Lofepramine Impurity E

Lofepramine Impurity F

Lofepramine Impurity G

Lofepramine Impurity H
 Lansoprazole Sulfone

Lansoprazole Sulfone N –Oxide


Losartan Carboxaldehyde

Losartan Carboxylic Acid

Leflunomide metabolite (A77 1726)
Leflunomide metabolite (A77 1726) –D3

Leflunomide Related Compound

5-Methylisoxazole-4-carboxylic acid

Leflunomide Related Compound

3-Methyl-N-[4-trifluoromethyl)phenyl]-4-isoxazole carboxamide


Metoprolol Impurity A

Metoprolol Impurity B

Metoprolol Impurity C

Metoprolol Impurity D

Metoprolol Impurity E

Metoprolol Impurity F

Metoprolol Impurity G

N-Desmethyl   Meanserin

8-Hydroxy Meanserin

Mebendazole Impurity A

Mebendazole Impurity B

Mebendazole Impurity C

Mebendazole Impurity D

Mebendazole Impurity E

Mebendazole Impurity G

 Miconazole Nitrate


 CAS number 22916-47-8

 Miconazole Nitrate Impurity A


Miconazole Nitrate Impurity B

1-[(2RS)-2-[(4-Chlorobenzyl)oxy]-2-(2,4-dichlorophenyl)-ethyl]-1H-imidazole Nitrate (Econazole Nitrate)

Miconazole Nitrate Impurity C


Miconazole Nitrate Impurity D

1-[(2RS)-2-[(2,6-Dichlorobenzyl)oxy]-2-(2,4-dichlorophenyl)-ethyl]-1H-imidazole Nitrate (Isoconazole Nitrate)

Miconazole Nitrate Impurity E

Miconazole Nitrate Impurity F

1-[(2RS)-2-[(3,4-Dichlorobenzyl)oxy]-2-(2,4-dichlorophenyl) ethyl]-1H-imidazole Nitrate

Miconazole Nitrate Impurity G

1-[(2RS)-2-[(2,5- Dichlorobenzyl)oxy]-2-(2,4-dichlorophenyl) ethyl]-1H-imidazole Nitrate

Miconazole Nitrate Impurity H

1-[(2RS)-2-Benzyloxy-2-(2,4-dichlorophenyl)ethyl]-1Himidazole Nitrate

Miconazole Nitrate Impurity I

1-[(2RS)-2-[(2-Chlorobenzyl)oxy]-2-(2,4-dichlorophenyl) ethyl]-1H-imidazole Nitrate

Miconazole Impurity 1-(2,4-Dichlorobenzoylmethyl)imidazole



CAS number   71320-77-9

Moclobemide Related Impurity A

{4-Chloro-N (2-hydroxyethyl) benzamide} 

Moclobemide N-Oxide 


 AC1L4SF6, AC1Q3N96, AR-1G1871, Ro-12-5637, A837738
Molecular Formula: C13H17ClN2O3   Molecular Weight: 284.73868

Moclobemide Metabolite

4-chloro-n-[2-(3-oxomorpholin-4-yl)ethyl]benzamide, 97221-06-2, AC1L2Q1W, AC1Q3N98, AR-1G1870, Ro-12-8095

Molecular Formula: C13H15ClN2O3   Molecular Weight: 282.7228

Moclobemide Impurity {4-Chloro-N (2-Chloroethyl) benzamide}

Maprotiline Impurity E

Maprotiline Impurity D

N-Desmethyl Maprotiline

Maprotiline –D3
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All Impurities,Metabolites & Labelled Isotopes are supplied with COA, Mass & H1NMR data, additional data would be provided at request with Nominal cost.

All Impurities,Metabolites & Labelled Isotopes listed are  compound synthesized for pharmaceutical research 
and  analytical testing only and are not intended for Diagnostic or Therapeutic use.

Copyright © Alfa-Omega Pharma. All rights reserved.