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Cleanchem is a trusted provider of premium pharmaceutical reference materials, specializing in Nirmatrelvir and its associated compounds. Our catalog includes pharmacopeial and non-pharmacopeial Nirmatrelvir impurities, metabolites, nitrosamine derivatives (N-NO compounds), and stable isotope-labeled products. These reference standards play a critical role in pharmaceutical R&D, supporting activities such as product formulation, ANDA and DMF submissions, quality assurance, analytical method development, and stability assessments.
All Nirmatrelvir-related substances undergo comprehensive characterization and are delivered with complete Certificates of Analysis and supporting analytical documentation to ensure regulatory adherence. Upon request, we can offer EP/USP traceable standards. Our products are routinely re-evaluated to maintain consistent quality and performance.

Nirmatrelvir

CAT No: CL-NMTV-01 CAS No: 2628280-40-8 Mol Wt: 499.5 Mol F: C23H32F3N5O4 Inv Status: Custom Synthesis

Chemical Name: (1R,2S,5S)-N-((S)-1-Cyano-2-((S)-2-oxopyrrolidin-3-yl)ethyl)-3-((S)-3,3-dimethyl-2-(2,2,2-trifluoroacetamido)butanoyl)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxamide

Nirmatrelvir Impurity 34

CAT No: CL-NMTV-02 CAS No: 2755812-45-2 Mol Wt: 364.4 Mol F: C16H23F3N2O4 Inv Status: Custom Synthesis

Chemical Name: (1R,2S,5S)-3-((S)-3,3-dimethyl-2-(2,2,2-trifluoroacetamido)butanoyl)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxylic acid

Nirmatrelvir Impurity 35

CAT No: CL-NMTV-03 CAS No: NA Mol Wt: 499.5 Mol F: C23H32F3N5O4 Inv Status: Custom Synthesis

Chemical Name: (1R,2S,5S)-N-((S)-1-cyano-2-((S)-2-oxopyrrolidin-3-yl)ethyl)-3-((R)-3,3-dimethyl-2-(2,2,2-trifluoroacetamido)butanoyl)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxamide

Nirmatrelvir Impurity B

CAT No: CL-NMTV-04 CAS No: 2755812-81-6 Mol Wt: 517.6 Mol F: C23H34F3N5O5 Inv Status: Custom Synthesis

Chemical Name: (1R,2S,5S)-N-((S)-1-Amino-1-oxo-3-((S)-2-oxopyrrolidin-3-yl)propan-2-yl)-3-((S)-3,3-dimethyl-2-(2,2,2-trifluoroacetamido)butanoyl)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxamide

Nirmatrelvir Methyl Ester

CAT No: CL-NMTV-05 CAS No: 2879641-46-8 Mol Wt: 532.6 Mol F: C24H35F3N4O6 Inv Status: Custom Synthesis

Chemical Name: Methyl (S)-2-((1R,2S,5S)-3-((S)-3,3-dimethyl-2-(2,2,2-trifluoroacetamido)butanoyl)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxamido)-3-((S)-2-oxopyrrolidin-3-yl)propanoate

Nirmatrelvir Acid Impurity

CAT No: CL-NMTV-06 CAS No: NA Mol Wt: 518.5 Mol F: C23H33F3N4O6 Inv Status: Custom Synthesis

Chemical Name: (S)-2-((1R,2S,5S)-3-((S)-3,3-Dimethyl-2-(2,2,2-trifluoroacetamido)butanoyl)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxamido)-3-((S)-2-oxopyrrolidin-3-yl)propanoic acid

Nirmatrelvir Chloro Impurity

CAT No: CL-NMTV-07 CAS No: NA Mol Wt: 536 Mol F: C23H33ClF3N5O4 Inv Status: Custom Synthesis

Chemical Name: (2S)-3-(2-chloropropan-2-yl)-N-((S)-1-cyano-2-((S)-2-oxopyrrolidin-3-yl)ethyl)-1-((S)-3,3-dimethyl-2-(2,2,2-trifluoroacetamido)butanoyl)pyrrolidine-2-carboxamide

Nirmatrelvir Isopropyl Ester

CAT No: CL-NMTV-08 CAS No: NA Mol Wt: 560.6 Mol F: C26H39F3N4O6 Inv Status: Custom Synthesis

Chemical Name: Isopropyl (S)-2-((1R,2S,5S)-3-((S)-3,3-dimethyl-2-(2,2,2-trifluoroacetamido)butanoyl)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxamido)-3-((S)-2-oxopyrrolidin-3-yl)propanoate

Nirmatrelvir R-Isomer

CAT No: CL-NMTV-09 CAS No: 2755812-41-8 Mol Wt: 499.5 Mol F: C23H32F3N5O4 Inv Status: Custom Synthesis

Chemical Name: (1R,2S,5S)-N-((R)-1-cyano-2-((S)-2-oxopyrrolidin-3-yl)ethyl)-3-((S)-3,3-dimethyl-2-(2,2,2-trifluoroacetamido)butanoyl)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxamide

Nirmatrelvir Impurity 1

CAT No: CL-NMTV-10 CAS No: 2889532-78-7 Mol Wt: 171.2 Mol F: C7H13N3O2 Inv Status: Custom Synthesis

Chemical Name: (R)-2-Amino-3-((R)-2-oxopyrrolidin-3-yl)propanamide

Nirmatrelvir Impurity 2

CAT No: CL-NMTV-11 CAS No: NA Mol Wt: 499.5 Mol F: C23H32F3N5O4 Inv Status: Custom Synthesis

Chemical Name: (1S,2S,5R)-N-((R)-1-Cyano-2-((S)-2-oxopyrrolidin-3-yl)ethyl)-3-((S)-3,3-dimethyl-2-(2,2,2-trifluoroacetamido)butanoyl)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxamide

Nirmatrelvir Impurity 3

CAT No: CL-NMTV-12 CAS No: NA Mol Wt: 345.4 Mol F: C16H22F3N3O2 Inv Status: Custom Synthesis

Chemical Name: N-((S)-1-((1R,2S,5S)-2-Cyano-6,6-dimethyl-3-azabicyclo[3.1.0]hexan-3-yl)-3,3-dimethyl-1-oxobutan-2-yl)-2,2,2-trifluoroacetamide

Nirmatrelvir Impurity 4

CAT No: CL-NMTV-13 CAS No: NA Mol Wt: 536 Mol F: C23H33ClF3N5O4 Inv Status: Custom Synthesis

Chemical Name: (2S,3S)-3-(2-Chloropropan-2-yl)-N-((S)-1-cyano-2-((S)-2-oxopyrrolidin-3-yl)ethyl)-1-((S)-3,3-dimethyl-2-(2,2,2-trifluoroacetamido)butanoyl)pyrrolidine-2-carboxamide

Nirmatrelvir Impurity 9

CAT No: CL-NMTV-14 CAS No: 2798910-03-7 Mol Wt: 172.2 Mol F: C7H12N2O3 Inv Status: Custom Synthesis

Chemical Name: (S)-2-Amino-3-((S)-2-oxopyrrolidin-3-yl)propanoic acid

Nirmatrelvir Impurity 10

CAT No: CL-NMTV-15 CAS No: 1027601-37-1 Mol Wt: 186.2 Mol F: C8H14N2O3 Inv Status: Custom Synthesis

Chemical Name: Methyl (S)-2-amino-3-((S)-2-oxopyrrolidin-3-yl)propanoate

Nirmatrelvir Impurity 11

CAT No: CL-NMTV-16 CAS No: NA Mol Wt: 214.3 Mol F: C10H18N2O3 Inv Status: Custom Synthesis

Chemical Name: Isopropyl (S)-2-amino-3-((S)-2-oxopyrrolidin-3-yl)propanoate

Nirmatrelvir Impurity 12

CAT No: CL-NMTV-17 CAS No: 2742706-72-3 Mol Wt: 153.2 Mol F: C7H11N3O Inv Status: Custom Synthesis

Chemical Name: (S)-2-Amino-3-((S)-2-oxopyrrolidin-3-yl)propanenitrile

Nirmatrelvir Impurity 13

CAT No: CL-NMTV-18 CAS No: NA Mol Wt: 517.6 Mol F: C23H34F3N5O5 Inv Status: Custom Synthesis

Chemical Name: (1R,2S,5S)-N-((2S)-1-Amino-1-oxo-3-(2-oxopyrrolidin-3-yl)propan-2-yl)-3-((S)-3,3-dimethyl-2-(2,2,2-trifluoroacetamido)butanoyl)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxamide

Nirmatrelvir Impurity 14

CAT No: CL-NMTV-19 CAS No: NA Mol Wt: 576.8 Mol F: C21H27Cl3F3N5O4 Inv Status: Custom Synthesis

Chemical Name: (2S)-N-((S)-1-Cyano-2-((S)-2-oxopyrrolidin-3-yl)ethyl)-1-((S)-3,3-dimethyl-2-(2,2,2-trifluoroacetamido)butanoyl)-3-(trichloromethyl)pyrrolidine-2-carboxamide

Nirmatrelvir Impurity 15

CAT No: CL-NMTV-20 CAS No: NA Mol Wt: 499.5 Mol F: C23H32F3N5O4 Inv Status: Custom Synthesis

Chemical Name: (1S,2R,5R)-N-((S)-1-Cyano-2-((S)-2-oxopyrrolidin-3-yl)ethyl)-3-((R)-3,3-dimethyl-2-(2,2,2-trifluoroacetamido)butanoyl)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxamide

Nirmatrelvir Impurity 16

CAT No: CL-NMTV-21 CAS No: NA Mol Wt: 499.5 Mol F: C23H32F3N5O4 Inv Status: Custom Synthesis

Chemical Name: (1S,2R,5R)-N-((S)-1-Cyano-2-((S)-2-oxopyrrolidin-3-yl)ethyl)-3-((S)-3,3-dimethyl-2-(2,2,2-trifluoroacetamido)butanoyl)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxamide

Nirmatrelvir Impurity 17

CAT No: CL-NMTV-22 CAS No: NA Mol Wt: 499.5 Mol F: C23H32F3N5O4 Inv Status: Custom Synthesis

Chemical Name: (1S,2R,5R)-N-((R)-1-cyano-2-((R)-2-oxopyrrolidin-3-yl)ethyl)-3-((R)-3,3-dimethyl-2-(2,2,2-trifluoroacetamido)butanoyl)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxamide

Nirmatrelvir Impurity 18

CAT No: CL-NMTV-23 CAS No: NA Mol Wt: 499.5 Mol F: C23H32F3N5O4 Inv Status: Custom Synthesis

Chemical Name: (1R,2R,5S)-N-((S)-1-cyano-2-((S)-2-oxopyrrolidin-3-yl)ethyl)-3-((S)-3,3-dimethyl-2-(2,2,2-trifluoroacetamido)butanoyl)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxamide

Nirmatrelvir Impurity 19

CAT No: CL-NMTV-24 CAS No: NA Mol Wt: 515.6 Mol F: C24H36F3N5O4 Inv Status: Custom Synthesis

Chemical Name: (2S)-3-(tert-butyl)-N-((S)-1-cyano-2-((S)-2-oxopyrrolidin-3-yl)ethyl)-1-((S)-3,3-dimethyl-2-(2,2,2-trifluoroacetamido)butanoyl)pyrrolidine-2-carboxamide

Nirmatrelvir Impurity 20

CAT No: CL-NMTV-25 CAS No: NA Mol Wt: 261.2 Mol F: C11H14F3N3O Inv Status: Custom Synthesis

Chemical Name: (1S,2S,5R)-3-((R)-2-amino-3,3,3-trifluoropropanoyl)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carbonitrile

Nirmatrelvir Impurity 21

CAT No: CL-NMTV-26 CAS No: NA Mol Wt: 511.4 Mol F: C20H23F6N5O4 Inv Status: Custom Synthesis

Chemical Name: (1R,2S,5S)-N-((S)-1-cyano-2-((S)-2-oxopyrrolidin-3-yl)ethyl)-6,6-dimethyl-3-((R)-3,3,3-trifluoro-2-(2,2,2-trifluoroacetamido)propanoyl)-3-azabicyclo[3.1.0]hexane-2-carboxamide

Nirmatrelvir Impurity 22

CAT No: CL-NMTV-27 CAS No: NA Mol Wt: 403.5 Mol F: C21H33N5O3 Inv Status: Custom Synthesis

Chemical Name: (1R,2S,5S)-3-((S)-2-amino-3,3-dimethylbutanoyl)-N-((R)-1-cyano-2-((S)-2-oxopyrrolidin-3-yl)ethyl)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxamide

Nirmatrelvir Impurity 23

CAT No: CL-NMTV-28 CAS No: 943516-62-9 Mol Wt: 169.2 Mol F: C9H15NO2 Inv Status: Custom Synthesis

Chemical Name: Methyl (1S,2R,5R)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxylate

Nirmatrelvir Impurity 24

CAT No: CL-NMTV-29 CAS No: NA Mol Wt: 144.1 Mol F: C5H8N2O3 Inv Status: Custom Synthesis

Chemical Name: (1S,5S)-1-Amino-6-oxa-2-azabicyclo[3.1.0]hexane-5-carboxylic acid

Nirmatrelvir Impurity 25

CAT No: CL-NMTV-30 CAS No: 1932478-97-1 Mol Wt: 169.2 Mol F: C9H15NO2 Inv Status: Custom Synthesis

Chemical Name: Methyl (1S,2S,5R)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxylate

Nirmatrelvir Impurity 26

CAT No: CL-NMTV-31 CAS No: 911835-76-2 Mol Wt: 155.2 Mol F: C8H13NO2 Inv Status: Custom Synthesis

Chemical Name: (1R,2S,5S)-6,6-Dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxylic acid

Nirmatrelvir Impurity 27

CAT No: CL-NMTV-32 CAS No: 666832-71-9 Mol Wt: 226.2 Mol F: C8H11F3NO3 Inv Status: Custom Synthesis

Chemical Name: (S)-3,3-Dimethyl-2-(2,2,2-trifluoroacetamido)butanoate

Nirmatrelvir Impurity 28

CAT No: CL-NMTV-33 CAS No: 1037559-71-9 Mol Wt: 109.2 Mol F: C7H11N Inv Status: Custom Synthesis

Chemical Name: (1R,5S)-6,6-Dimethyl-3-azabicyclo[3.1.0]hex-2-ene

Nirmatrelvir Impurity 29

CAT No: CL-NMTV-34 CAS No: 1037621-90-1 Mol Wt: 191.2 Mol F: C7H13NO3S Inv Status: Custom Synthesis

Chemical Name: (1R,2R,5S)-6,6-Dimethyl-3-azabicyclo[3.1.0]hexane-2-sulfonic acid

Nirmatrelvir Impurity 30

CAT No: CL-NMTV-35 CAS No: 1037559-82-2 Mol Wt: 136.2 Mol F: C8H12N2 Inv Status: Custom Synthesis

Chemical Name: (1R,2S,5S)-6,6-Dimethyl-3-azabicyclo[3.1.0]hexane-2-carbonitrile

Nirmatrelvir Impurity 31

CAT No: CL-NMTV-36 CAS No: 943516-54-9 Mol Wt: 111.2 Mol F: C7H13N Inv Status: Custom Synthesis

Chemical Name: 6,6-Dimethyl-3-azabicyclo[3.1.0]hexane

Nirmatrelvir Impurity 32

CAT No: CL-NMTV-37 CAS No: 31557-26-3 Mol Wt: 209.2 Mol F: C8H10F3NO2 Inv Status: Custom Synthesis

Chemical Name: 4-(Tert-butyl)-2-(trifluoromethyl)oxazol-5(2H)-one

Nirmatrelvir Impurity 33

CAT No: CL-NMTV-38 CAS No: NA Mol Wt: 595.5 Mol F: C25H31F6N5O5 Inv Status: Custom Synthesis

Chemical Name: (1R,2S,5S)-N-((S)-1-Cyano-2-((S)-2-oxopyrrolidin-3-yl)ethyl)-3-((S)-3,3-dimethyl-2-(2,2,2-trifluoroacetamido)butanoyl)-6,6-dimethyl-N-(2,2,2-trifluoroacetyl)-3-azabicyclo[3.1.0]hexane-2-carboxamide

Nirmatrelvir Impurity 36

CAT No: CL-NMTV-39 CAS No: 2883654-28-0 Mol Wt: 403.5 Mol F: C21H33N5O3 Inv Status: Custom Synthesis

Chemical Name: (1R,2S,5S)-3-((S)-2-amino-3,3-dimethylbutanoyl)-N-((S)-1-cyano-2-((S)-2-oxopyrrolidin-3-yl)ethyl)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxamide

Nirmatrelvir Impurity 37

CAT No: CL-NMTV-40 CAS No: NA Mol Wt: 171.2 Mol F: C7H13N3O2 Inv Status: Custom Synthesis

Chemical Name: (R)-2-amino-3-((S)-2-oxopyrrolidin-3-yl)propanamide

Nirmatrelvir Impurity 38

CAT No: CL-NMTV-41 CAS No: NA Mol Wt: 171.2 Mol F: C7H13N3O2 Inv Status: Custom Synthesis

Chemical Name: (S)-2-amino-3-((R)-2-oxopyrrolidin-3-yl)propanamide

Nirmatrelvir Impurity 39

CAT No: CL-NMTV-42 CAS No: 394735-37-6 Mol Wt: 368.5 Mol F: C19H32N2O5 Inv Status: Custom Synthesis

Chemical Name: (1R,2S,5S)-3-((S)-2-((tert-butoxycarbonyl)amino)-3,3-dimethylbutanoyl)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxylic acid

Nirmatrelvir Impurity 40

CAT No: CL-NMTV-43 CAS No: 1932411-98-7 Mol Wt: 169.2 Mol F: C9H15NO2 Inv Status: Custom Synthesis

Chemical Name: Methyl (1R,2R,5S)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxylate

Nirmatrelvir Impurity 41

CAT No: CL-NMTV-44 CAS No: NA Mol Wt: 190.2 : 23.0 Mol F: C7H12NO3S : Na Inv Status: Custom Synthesis

Chemical Name: Sodium (1S,2R,5R)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-sulfonate

Nirmatrelvir Impurity 42

CAT No: CL-NMTV-45 CAS No: 2742706-71-2 Mol Wt: 378.4 Mol F: C17H25F3N2O4 Inv Status: Custom Synthesis

Chemical Name: Methyl (1R,2S,5S)-3-((S)-3,3-dimethyl-2-(2,2,2-trifluoroacetamido)butanoyl)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxylate

Nirmatrelvir Impurity 43

CAT No: CL-NMTV-46 CAS No: 124655-17-0 Mol Wt: 231.3 Mol F: C11H21NO4 Inv Status: Custom Synthesis

Chemical Name: (R)-2-((Tert-butoxycarbonyl)amino)-3,3-dimethylbutanoic acid

Nirmatrelvir Impurity 44

CAT No: CL-NMTV-47 CAS No: NA Mol Wt: 499.5 Mol F: C23H32F3N5O4 Inv Status: Custom Synthesis

Chemical Name: (1R,2S,5S)-N-((R)-1-Cyano-2-((R)-2-oxopyrrolidin-3-yl)ethyl)-3-((S)-3,3-dimethyl-2-(2,2,2-trifluoroacetamido)butanoyl)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxamide

Type:Impurity Reference Standard

Total Products: 47

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