Oseltamivir

Venkatasai is a leading provider of pharmaceutical reference standards, specializing in the supply of high-purity Oseltamivir reference materials. Our portfolio includes both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope-labeled compounds, and nitrosamine derivatives (N-NO products). These reference standards play a crucial role in pharmaceutical R&D, aiding in formulation development, ANDA/DMF submissions, quality control, method validation, stability studies, and impurity profiling—including the identification and assessment of potentially genotoxic impurities.

Each Oseltamivir-related product is rigorously characterized and delivered with a detailed Certificate of Analysis (COA) and comprehensive analytical data to ensure regulatory compliance. Upon request, we also offer EP/USP traceable standards. To maintain the highest quality standards, all materials are subject to periodic re-testing and continuous quality monitoring.

Oseltamivir Phosphate

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CAT No: VS-O023001
CAS No: 204255-11-8
Mol.F.: C16H28N2O4 : H3PO4
Mol.Wt.: 312.4 : 98.0
Status: Custom Synthesis

Oseltamivir EP Impurity A

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CAT No: VS-O023002
CAS No: 1364932-19-3
Mol.F.: C14H24N2O4
Mol.Wt.: 284.4
Status: In Stock

Oseltamivir EP Impurity B

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CAT No: VS-O023003
CAS No: N/A
Mol.F.: C16H29N5O4
Mol.Wt.: 355.4
Status: In Stock

Oseltamivir EP Impurity C

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CAT No: VS-O023004
CAS No: 187227-45-8
Mol.F.: C14H24N2O4
Mol.Wt.: 284.4
Status: In Stock

Oseltamivir EP Impurity D

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CAT No: VS-O023005
CAS No: 1346604-18-9
Mol.F.: C11H13NO4
Mol.Wt.: 223.2
Status: In Stock

Oseltamivir EP Impurity E

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CAT No: VS-O023006
CAS No: 208720-71-2
Mol.F.: C15H26N2O4
Mol.Wt.: 298.4
Status: Custom Synthesis

Oseltamivir EP Impurity G

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CAT No: VS-O023007
CAS No: 956267-10-0
Mol.F.: C16H28N2O4
Mol.Wt.: 312.4
Status: Custom Synthesis

Oseltamivir EP Impurity F

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CAT No: VS-O023008
CAS No: 1052063-37-2
Mol.F.: C15H26N2O4
Mol.Wt.: 298.3
Status: In Stock

Oseltamivir EP Impurity H

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CAT No: VS-O023009
CAS No: 814-29-9
Mol.F.: C12H27OP
Mol.Wt.: 218.3
Status: In Stock

5-Azido Oseltamivir

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CAT No: VS-O023010
CAS No: 204255-06-1
Mol.F.: C16H26N4O4
Mol.Wt.: 338.4
Status: Custom Synthesis

Oseltamivir Citric acid Adduct

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CAT No: VS-O023011
CAS No: N/A
Mol.F.: C22H34N2O10
Mol.Wt.: 486.5
Status: Custom Synthesis

Oseltamivir Citric Acid Adduct-2

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CAT No: VS-O023012
CAS No: N/A
Mol.F.: C22H34N2O10
Mol.Wt.: 486.5
Status: Custom Synthesis

Oseltamavir Diamine Impurity

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CAT No: VS-O023013
CAS No: 212504-89-7
Mol.F.: C14H26N2O3
Mol.Wt.: 270.4
Status: Custom Synthesis

Oseltamivir RSS Isomer

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CAT No: VS-O023014
CAS No: 2413185-97-2
Mol.F.: C26H44N2O4
Mol.Wt.: 448.6
Status: Custom Synthesis

Oseltamivir RSR Isomer

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CAT No: VS-O023015
CAS No: 2413185-98-3
Mol.F.: C26H44N2O4
Mol.Wt.: 448.6
Status: Custom Synthesis

Oseltamivir RRR Isomer

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CAT No: VS-O023016
CAS No: 2413185-96-1
Mol.F.: C26H44N2O4
Mol.Wt.: 448.6
Status: Custom Synthesis

Oseltamavir Citric Acid Adduct Mix

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CAT No: VS-O023017
CAS No: N/A
Mol.F.: C22H34N2O10
Mol.Wt.: 486.5
Status: Custom Synthesis

Oseltamivir Glucose Adduct-1

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CAT No: VS-O023018
CAS No: N/A
Mol.F.: C22H38N2O9
Mol.Wt.: 474.6
Status: Custom Synthesis

Oseltamivir Fructose Adduct-1

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CAT No: VS-O023019
CAS No: N/A
Mol.F.: C22H38N2O9
Mol.Wt.: 474.6
Status: Custom Synthesis

Oseltamivir Fructose Adduct-2

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CAT No: VS-O023020
CAS No: N/A
Mol.F.: C22H38N2O9
Mol.Wt.: 474.6
Status: Custom Synthesis

Oseltamivir Glucose Adduct-2

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CAT No: VS-O023021
CAS No: N/A
Mol.F.: C20H32N2O8
Mol.Wt.: 428.5
Status: Custom Synthesis

Oseltamivir Impurity 1

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CAT No: VS-O023022
CAS No: N/A
Mol.F.: C18H30N2O5
Mol.Wt.: 354.5
Status: Custom Synthesis

Oseltamivir Impurity 3

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CAT No: VS-O023023
CAS No: N/A
Mol.F.: C22H38N2O9
Mol.Wt.: 474.6
Status: Custom Synthesis

Oseltamivir Impurity 4

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CAT No: VS-O023024
CAS No: N/A
Mol.F.: C22H32N2O6
Mol.Wt.: 420.5
Status: Custom Synthesis

Oseltamivir Impurity 5

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CAT No: VS-O023025
CAS No: N/A
Mol.F.: C22H32N2O9
Mol.Wt.: 468.5
Status: Custom Synthesis

Oseltamivir Impurity 6

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CAT No: VS-O023026
CAS No: 651324-04-8
Mol.F.: C18H33NO4
Mol.Wt.: 327.5
Status: In Stock

Oseltamivir Impurity 7

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CAT No: VS-O023027
CAS No: N/A
Mol.F.: C22H32N2O6
Mol.Wt.: 420.5
Status: Custom Synthesis

Oseltamivir Impurity 8

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CAT No: VS-O023028
CAS No: 204254-96-6
Mol.F.: C14H22O4
Mol.Wt.: 254.3
Status: Custom Synthesis

Oseltamivir Impurity 9

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CAT No: VS-O023029
CAS No: N/A
Mol.F.: C22H32N2O6
Mol.Wt.: 420.5
Status: Custom Synthesis

Oseltamivir Impurity 10

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CAT No: VS-O023030
CAS No: N/A
Mol.F.: C17H28N2O4
Mol.Wt.: 324.4
Status: Custom Synthesis

Oseltamivir Impurity 11

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CAT No: VS-O023031
CAS No: 1266663-89-1
Mol.F.: C14H22O4
Mol.Wt.: 254.3
Status: Custom Synthesis

Oseltamivir Impurity 12

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CAT No: VS-O023032
CAS No: 2413185-89-2
Mol.F.: C14H22O4
Mol.Wt.: 254.3
Status: Custom Synthesis

Oseltamivir Impurity 13

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CAT No: VS-O023033
CAS No: 2413185-88-1
Mol.F.: C14H22O4
Mol.Wt.: 254.3
Status: Custom Synthesis

Oseltamivir Impurity 14

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CAT No: VS-O023034
CAS No: 2417645-75-9
Mol.F.: C18H31NO3
Mol.Wt.: 309.5
Status: In Stock

Oseltamivir Impurity 15

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CAT No: VS-O023035
CAS No: 651324-06-0
Mol.F.: C24H42N2O3
Mol.Wt.: 406.6
Status: In Stock

Oseltamivir Impurity 16

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CAT No: VS-O023036
CAS No: 651324-07-1
Mol.F.: C26H44N2O4
Mol.Wt.: 448.6
Status: Custom Synthesis

Oseltamivir Impurity 17

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CAT No: VS-O023037
CAS No: 1151665-78-9
Mol.F.: C14H20O3
Mol.Wt.: 236.3
Status: Custom Synthesis

Oseltamivir Impurity 18

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CAT No: VS-O023038
CAS No: N/A
Mol.F.: C26H44N2O3
Mol.Wt.: 432.6
Status: Custom Synthesis

Oseltamivir Impurity 19

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CAT No: VS-O023039
CAS No: N/A
Mol.F.: C26H44N2O3
Mol.Wt.: 432.6
Status: Custom Synthesis

Oseltamivir Impurity 20

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CAT No: VS-O023040
CAS No: 651324-08-2
Mol.F.: C26H44N2O4 : HCl
Mol.Wt.: 448.6 : 36.5
Status: Custom Synthesis

Oseltamivir Impurity 21

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CAT No: VS-O023041
CAS No: 347378-74-9
Mol.F.: C14H22O4
Mol.Wt.: 254.3
Status: Custom Synthesis

Oseltamivir Impurity 22

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CAT No: VS-O023042
CAS No: N/A
Mol.F.: C14H24N2O4 : H3O4P
Mol.Wt.: 284.4 : 98.0
Status: Custom Synthesis

Oseltamivir Impurity 23

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CAT No: VS-O023043
CAS No: 1035895-88-5
Mol.F.: C16H28N2O4
Mol.Wt.: 312.4
Status: Custom Synthesis

Oseltamivir Impurity 24

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CAT No: VS-O023044
CAS No: N/A
Mol.F.: C22H38N2O9
Mol.Wt.: 474.6
Status: Custom Synthesis

Oseltamivir Impurity 25

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CAT No: VS-O023045
CAS No: N/A
Mol.F.: C22H38N2O9
Mol.Wt.: 474.6
Status: Custom Synthesis

Oseltamivir Impurity 26

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CAT No: VS-O023046
CAS No: N/A
Mol.F.: C16H28N2O4 : HCl
Mol.Wt.: 312.4 : 36.5
Status: Custom Synthesis

Oseltamivir Impurity 27

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CAT No: VS-O023047
CAS No: N/A
Mol.F.: C16H28N2O4 : HCl
Mol.Wt.: 312.4 : 36.5
Status: Custom Synthesis

Oseltamivir Impurity 28

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CAT No: VS-O023048
CAS No: 2413185-95-0
Mol.F.: C16H28N2O4
Mol.Wt.: 312.4
Status: Custom Synthesis

Oseltamivir Impurity 29

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CAT No: VS-O023049
CAS No: 2081110-44-1
Mol.F.: C16H28N2O4
Mol.Wt.: 312.4
Status: Custom Synthesis

Oseltamivir Impurity 26

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CAT No: VS-O023050
CAS No: N/A
Mol.F.: C16H28N2O4 : HCl
Mol.Wt.: 312.4 : 36.5
Status: Custom Synthesis

Oseltamivir Impurity 27

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CAT No: VS-O023051
CAS No: N/A
Mol.F.: C14H24N2O4 : HCl
Mol.Wt.: 284.4 : 36.5
Status: Custom Synthesis

Oseltamivir Impurity 28

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CAT No: VS-O023052
CAS No: 204254-98-8
Mol.F.: C14H23N3O4
Mol.Wt.: 297.4
Status: Custom Synthesis

N-Desacetyl 5-Azido Oseltamivir

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CAT No: VS-O023053
CAS No: 204255-04-9
Mol.F.: C14H24N4O3
Mol.Wt.: 296.4
Status: Custom Synthesis

Oseltamivir Impurity 29

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CAT No: VS-O023054
CAS No: 204255-02-7
Mol.F.: C14H23NO3
Mol.Wt.: 253.3
Status: Custom Synthesis

Oseltamivir Nitroso Impurity 1

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CAT No: VS-O023055
CAS No: NA
Mol.F.: C14H22N2O4
Mol.Wt.: 282.3
Status: Custom Synthesis

Oseltamivir Impurity 30

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CAT No: VS-O023056
CAS No: NA
Mol.F.: C13H20O4
Mol.Wt.: 240.3
Status: Custom Synthesis

Oseltamivir

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CAT No: VS-O023057
CAS No: 196618-13-0
Mol.F.: C16H28N2O4
Mol.Wt.: 312.4
Status: Custom Synthesis

Oseltamivir Impurity 31

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CAT No: VS-O023058
CAS No: 204254-94-4
Mol.F.: C15H26O7S
Mol.Wt.: 350.4
Status: In Stock

Oseltamivir EP Impurity E (HCl)

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CAT No: VS-O023059
CAS No: 208720-78-9
Mol.F.: C15H26N2O4 : HCl
Mol.Wt.: 298.38 : 36.5
Status: In Stock

Oseltamivir Hydrochloride

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CAT No: VS-O023060
CAS No: 204255-09-4
Mol.F.: C16H28N2O4 : HCl
Mol.Wt.: 312.41 : 36.5
Status: In Stock

Oseltamivir Hydroxy Epoxide Impurity

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CAT No: VS-O023061
CAS No: 876014-27-6
Mol.F.: C9H12O4
Mol.Wt.: 184.2
Status: Custom Synthesis

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