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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.


Ramipril Cyclohexyl Analogue

Ramipril Diketo Analogue

Ramiprilate Hydrate

Ranitidine Sulfoxide

Ranitidine N-Oxide

Ropinirole Hydrochloride

Ropinirole N-Oxide

N-Despropyl Ropinirole

N-Didespropyl Ropinirole


Rabeprzole Thioether Impurity

O-Desmethyl Rabeprazole

O-Desmethyl Rabeprazole Thioether

Rabeprazole Sulfone

Rabeprazole Sulfone N-Oxide


Simvastatin Hydroxy Acid

Simvastatin Imp.D

Anhydro Simvastatin

Acetyl Simvastatin

Simvastatin Methyl Ester

Simvastatin Ethyl Ester

Simvastatin Butaneamide

8-Hydroxy Simvastatin
Sildinafil Citrate

Sildinafil N –Oxide

Sildinafil –D3

N-Desmethyl Sildinafil



Sibutramine Hydrochloride
Mono Desmethyl Sibutramine

N-Didesmethyl Sibutramine

4-(3,4-Dichlorophenyl)-3,4-dihydro-1(2H)- Naphthalenone

(±)Cis-N-Methyl-4-(3,4-dichlorophenyl)-1,2,3,4-tetrahydroNaphthalenamine Hydrochloride
Sumatriptan Succinate
 Sumatriptan Impurity B

N-Desmethyl Sumatriptan


Sumatriptan Impurity C

1-[3-(2-dimethylaminoethyl)-1-(Hydroxymethyl)-1H-indol-5-yl]- N-methyl-methanesulfonamide

Sumatriptan Impurity D

Sumatriptan N-Oxide

N,N-dimethyl-2-[5-[(methylsulphamoyl)methyl]-1H-indol-3-yl]ethanamine N-Oxide
Venlafaxin Hydrochloride
Venlafaxine Impurity C

N-Didesmethyl Venlafaxine . HCl

1-[1RS-2amino 1-(4-Methoxy phenyl)ethyl] cyclohexanol

Venlafaxine Impurity D

N-Desmethyl Venlafaxine . HCl

1-[1RS- 1-(4-Methoxy phenyl)-2-(methyl amino)ethyl] cyclohexanol

Venlafaxine Impurity H

1-[(1RS)-1-(4-methoxy phenyl)2-[[2-(4-methoxy phenyl ethyl]amino]ethyl ]cyclohexanol

Venlafaxine Impurity E

(5RS)-5-(4methoxy phenyl)-3-methyl-1oxa-3azaspiro(5.5)undecane

Venlafaxine Impurity F

(2RS)-2-(cyclohex-1-enyl)-2-methoxy phenyl)-N,N-dimethyl ethanamine
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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.