Atazanavir Related Compounds & Impurities

Atazanavir is an azapeptide HIV-1 protease inhibitor distinguished by once-daily dosing, used in combination antiretroviral regimens.

Simson Pharma Limited along with its subsidiary offices Simson Pharma Global Ltd. (UK) and Simson Pharma Global LLC (USA) is a trusted manufacturer and supplier of high-quality pharmaceutical reference standards, offering a comprehensive portfolio of Atazanavir reference standards, pharmacopeial and non-pharmacopeial Atazanavir impurities, related compounds, related substances, metabolites, stable isotope-labelled compounds, deuterium labelled compounds and nitrosamine (N-NO) reference standards.

These materials support pharmaceutical research and development, product development, ANDA and DMF submissions, quality control (QC), analytical method development and validation, stability studies, impurity identification, and genotoxic impurity assessment.

Our Atazanavir-related reference standards are thoroughly characterized using advanced analytical techniques and are supplied with comprehensive Certificates of Analysis (COA) and supporting analytical data from our USFDA certified, ISO 17025 and ISO 17034 accredited Lab, to meet global regulatory expectations. EP and USP traceable reference standards can also be provided upon request, subject to availability. Simson is also a provider of EP and USP traceable standards. To ensure consistent quality and reliability, our reference standards are periodically re-tested according to established quality management procedures.

Pharmaceutical Reference Standards / Impurity Standards

Atazanavir
Atazanavir
  • CAT. No.A370000
  • CAS. No.198904-31-3
  • Mol. F.C38H52N6O7
  • Mol. W.704.85 g/mol
  • Stock Status:Instock
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Atazanavir sulphate
Atazanavir sulphate
  • CAT. No.A370000A
  • CAS. No.229975-97-7
  • Mol. F.C38H52N6O7.H2SO4
  • Mol. W.802.93 g/mol
  • Stock Status:Instock
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Atazanavir Impurity 24
Atazanavir Impurity 24
  • CAT. No.A370002
  • CAS. No.154212-60-9
  • Mol. F.C8H14N2S
  • Mol. W.170.28 g/mol
  • Stock Status:Instock
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(3R,8S,9S,12S)-Atazanavir
(3R,8S,9S,12S)-Atazanavir
  • CAT. No.A370005
  • CAS. No.1332981-14-2
  • Mol. F.C38H52N6O7
  • Mol. W.704.86 g/mol
  • Stock Status:Instock
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(3S,8S,9S,12R)-Atazanavir
(3S,8S,9S,12R)-Atazanavir
  • CAT. No.A370006
  • CAS. No.1332981-16-4
  • Mol. F.C38H52N6O7
  • Mol. W.704.86 g/mol
  • Stock Status:Under Synthesis
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Atazanavir EP Impurity D
Atazanavir EP Impurity D
  • CAT. No.A370008
  • CAS. No.NA
  • Mol. F.C34H33N5O
  • Mol. W.527.66 g/mol
  • Stock Status:Instock
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Atazanavir EP Impurity B
Atazanavir EP Impurity B
  • CAT. No.A370009
  • CAS. No.127406-56-8
  • Mol. F.C12H9NO
  • Mol. W.183.21 g/mol
  • Stock Status:Instock
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Atazanavir Impurity 12
Atazanavir Impurity 12
  • CAT. No.A370010
  • CAS. No.198904-84-6
  • Mol. F.C17H19N3O2
  • Mol. W.297.35 g/mol
  • Stock Status:Custom Synthesis
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tert-Butyl Carbazate
tert-Butyl Carbazate
  • CAT. No.A370011
  • CAS. No.870-46-2
  • Mol. F.C5H12N2O2
  • Mol. W.132.16 g/mol
  • Stock Status:Custom Synthesis
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Atazanavir EP Impurity J
Atazanavir EP Impurity J
  • CAT. No.A370012
  • CAS. No.198904-86-8
  • Mol. F.C32H42N4O5
  • Mol. W.562.70 g/mol
  • Stock Status:Under Synthesis
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Dealkyl Atazanavir
Dealkyl Atazanavir
  • CAT. No.A370013
  • CAS. No.1192224-24-0
  • Mol. F.C26H43N5O7
  • Mol. W.537.65 g/mol
  • Stock Status:Instock
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5-Hydroxymethyl-2-furancarboxaldehyde
5-Hydroxymethyl-2-furancarboxaldehyde
  • CAT. No.A370014
  • CAS. No.67-47-0
  • Mol. F.C6H6O3
  • Mol. W.126.11 g/ mol
  • Stock Status:Instock
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Atazanavir Pyridinyl benzaldehyde lactose acetal
Atazanavir Pyridinyl benzaldehyde lactose acetal
  • CAT. No.A370015
  • CAS. No.NA
  • Mol. F.C24H29NO11
  • Mol. W.507.49 g/ mol
  • Stock Status:Limited Stock
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(3R,8S,9S,12R)-Atazanavir
(3R,8S,9S,12R)-Atazanavir
  • CAT. No.A370017
  • CAS. No.1292296-11-7
  • Mol. F.C38H52N6O7
  • Mol. W.704.86 g/mol
  • Stock Status:Limited Stock
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Atazanavir S,S,R,S-Diastereomer
Atazanavir S,S,R,S-Diastereomer
  • CAT. No.A370018
  • CAS. No.1292296-10-6
  • Mol. F.C38H52N6O7
  • Mol. W.704.86 g/mol
  • Stock Status:Instock
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Atazanavir EP Impurity E
Atazanavir EP Impurity E
  • CAT. No.A370019
  • CAS. No.1292296-09-3
  • Mol. F.C38H52N6O7
  • Mol. W.704.86 g/mol
  • Stock Status:Instock
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Atazanavir Hydrazine Analog
Atazanavir Hydrazine Analog
  • CAT. No.A370020
  • CAS. No.437713-06-9
  • Mol. F.C22H26N4O
  • Mol. W.362.47 g/mol
  • Stock Status:Under Synthesis
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Atazanavir Hydrazine Analog Trihydrochloride
Atazanavir Hydrazine Analog Trihydrochloride
  • CAT. No.A370020A
  • CAS. No.198904-87-9
  • Mol. F.C22H26N4O.3HCl
  • Mol. W.471.85 g/mol
  • Stock Status:Instock
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Atazanavir Benzylidenehydrazine Carbamate
Atazanavir Benzylidenehydrazine Carbamate
  • CAT. No.A370021
  • CAS. No.NA
  • Mol. F.C42H46N6O4
  • Mol. W.698.85 g/mol
  • Stock Status:Limited Stock
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Atazanavir Keto Diamine Impurity
Atazanavir Keto Diamine Impurity
  • CAT. No.A370022
  • CAS. No.NA
  • Mol. F.C22H24N4O
  • Mol. W.360.45 g/mol
  • Stock Status:Custom Synthesis
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Atazanavir KSM- 2 R , R isomer
Atazanavir KSM- 2 R , R isomer
  • CAT. No.A370023
  • CAS. No.98818-34-9
  • Mol. F.C15H21NO3
  • Mol. W.263.33 g/mol
  • Stock Status:Instock
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Methyl ((R)-1-(((2R,3R)-3-hydroxy-1-phenyl-4-(1-(4-(pyridin-2-yl)benzyl)hydrazinyl)butan-2-yl)amino)-3,3-dimethyl-1-oxobutan-2-yl)carbamate
Methyl ((R)-1-(((2R,3R)-3-hydroxy-1-phenyl-4-(1-(4-(pyridin-2-yl)benzyl)hydrazinyl)butan-2-yl)amino)-3,3-dimethyl-1-oxobutan-2-yl)carbamate
  • CAT. No.A370025
  • CAS. No.NA
  • Mol. F.C22H24N4O
  • Mol. W.360.45 g/mol
  • Stock Status:Custom Synthesis
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Atazanavir EP Impurity K
Atazanavir EP Impurity K
  • CAT. No.A370027
  • CAS. No.162537-11-3
  • Mol. F.C8H15NO4
  • Mol. W.189.21 g/mol
  • Stock Status:Instock
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(R)-2-Amino-3,3-dimethylbutyric Acid
(R)-2-Amino-3,3-dimethylbutyric Acid
  • CAT. No.A370028
  • CAS. No.26782-71-8
  • Mol. F.C6H13NO2
  • Mol. W.131.17 g/mol
  • Stock Status:Instock
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(2S,3S)-3-(Boc-amino)-1,2-epoxy-4-phenylbutane
(2S,3S)-3-(Boc-amino)-1,2-epoxy-4-phenylbutane
  • CAT. No.A370029
  • CAS. No.98737-29-2
  • Mol. F.C15H21NO3
  • Mol. W.263.33 g/mol
  • Stock Status:Custom Synthesis
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Atazanavir R,R,R,R Isomer
Atazanavir R,R,R,R Isomer
  • CAT. No.A370030
  • CAS. No.NA
  • Mol. F.C38H52N6O7
  • Mol. W.704.86 g/mol
  • Stock Status:Instock
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Atazanavir Impurity 16
Atazanavir Impurity 16
  • CAT. No.A370031
  • CAS. No.2131010-71-2
  • Mol. F.C46H65N7O10
  • Mol. W.876.05 g/mol
  • Stock Status:Instock
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(3R,8S,9R,12R)-Atazanavir
(3R,8S,9R,12R)-Atazanavir
  • CAT. No.A370032
  • CAS. No.NA
  • Mol. F.C38H52N6O7
  • Mol. W.704.87 g/mol
  • Stock Status:Custom Synthesis
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Atazanavir impurity 7
Atazanavir impurity 7
  • CAT. No.A370034
  • CAS. No.NA
  • Mol. F.C36H50N6O5
  • Mol. W.646.82 g/mol
  • Stock Status:Custom Synthesis
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Atazanavir Amine Analog
Atazanavir Amine Analog
  • CAT. No.A370036
  • CAS. No.1028634-76-5
  • Mol. F.C36H50N6O5
  • Mol. W.646.82 g/mol
  • Stock Status:Custom Synthesis
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Atazanavir Impurity 7 Hydrochloride
Atazanavir Impurity 7 Hydrochloride
  • CAT. No.A370037
  • CAS. No.1233885-61-4
  • Mol. F.C36H50N6O5.HCl
  • Mol. W.683.28 g/mol
  • Stock Status:Custom Synthesis
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Atazanavir N,N-Di-BOC-Protected Keto Diamine Impurity
Atazanavir N,N-Di-BOC-Protected Keto Diamine Impurity
  • CAT. No.A370038
  • CAS. No.NA
  • Mol. F.C32H40N4O5
  • Mol. W.560.68 g/mol
  • Stock Status:Instock
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(2R,3R)-3-[(t-Butoxycarbonyl)amino]-4-phenyl-1,2-epoxybutane
(2R,3R)-3-[(t-Butoxycarbonyl)amino]-4-phenyl-1,2-epoxybutane
  • CAT. No.A370040
  • CAS. No.156474-21-4
  • Mol. F.C15H21NO3
  • Mol. W.263.33 g/mol
  • Stock Status:Custom Synthesis
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Tert-butyl 2-(4-(pyridine-2-yl)benzyl)hydrazinecarboxylate
Tert-butyl 2-(4-(pyridine-2-yl)benzyl)hydrazinecarboxylate
  • CAT. No.A370041
  • CAS. No.198904-85-7
  • Mol. F.C17H21N3O2
  • Mol. W.299.37 g/mol
  • Stock Status:Custom Synthesis
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Atazanavir Impurity C
Atazanavir Impurity C
  • CAT. No.A370042
  • CAS. No.98760-08-8
  • Mol. F.C15H21NO3
  • Mol. W.263.34 g/mol
  • Stock Status:Instock
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Atazanavir RS8 Impurity
Atazanavir RS8 Impurity
  • CAT. No.A370043
  • CAS. No.1292296-12-8
  • Mol. F.C37H48N6O6
  • Mol. W.672.81 g/mol
  • Stock Status:Custom Synthesis
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Atazanavir RS9 Impurity
Atazanavir RS9 Impurity
  • CAT. No.A370044
  • CAS. No.1292296-13-9
  • Mol. F.C37H48N6O6
  • Mol. W.672.81 g/mol
  • Stock Status:Custom Synthesis
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Atazanavir Diol Impurity
Atazanavir Diol Impurity
  • CAT. No.A370045
  • CAS. No.73488-74-1
  • Mol. F.C15H23NO4
  • Mol. W.281.35 g/mol
  • Stock Status:Instock
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Atazanavir Impurity 39
Atazanavir Impurity 39
  • CAT. No.A370046
  • CAS. No.1191091-65-2
  • Mol. F.C8H15NO4
  • Mol. W.189.21 g/mol
  • Stock Status:Custom Synthesis
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Atazanavir Impurity 15
Atazanavir Impurity 15
  • CAT. No.A370047
  • CAS. No.857900-54-0
  • Mol. F.C30H39N5O4
  • Mol. W.533.66 g/mol
  • Stock Status:Instock
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Atazanavir S,R,R,S-Diastereomer
Atazanavir S,R,R,S-Diastereomer
  • CAT. No.A370048
  • CAS. No.NA
  • Mol. F.C38H52N6O7
  • Mol. W.704.86 g/mol
  • Stock Status:Instock
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Atazanavir Impurity 13
Atazanavir Impurity 13
  • CAT. No.A370049
  • CAS. No.257907-05-4
  • Mol. F.C12H11N3
  • Mol. W.197.24 g/mol
  • Stock Status:Instock
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Atazanavir Impurity 32
Atazanavir Impurity 32
  • CAT. No.A370050
  • CAS. No.NA
  • Mol. F.C17H21N3O2
  • Mol. W.299.37 g/mol
  • Stock Status:Custom Synthesis
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Atazanavir Hydrazone Semicarbazide Derivative (mixture of E/Z-isomers)
Atazanavir Hydrazone Semicarbazide Derivative (mixture of E/Z-isomers)
  • CAT. No.A370051
  • CAS. No.NA
  • Mol. F.C18H21N5O3
  • Mol. W.355.39 g/mol
  • Stock Status:Custom Synthesis
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(2S)-2-[(Ethoxycarbonyl)amino]-3,3-dimethylbutanoic acid
(2S)-2-[(Ethoxycarbonyl)amino]-3,3-dimethylbutanoic acid
  • CAT. No.A370052
  • CAS. No.156990-58-8
  • Mol. F.C9H17NO4
  • Mol. W.203.24 g/mol
  • Stock Status:Custom Synthesis
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Atazanavir Impurity 37
Atazanavir Impurity 37
  • CAT. No.A370053
  • CAS. No.869285-68-7
  • Mol. F.C14H18N4O4
  • Mol. W.306.32 g/mol
  • Stock Status:Custom Synthesis
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Atazanavir Hydroxy Analog trihydrochloride
Atazanavir Hydroxy Analog trihydrochloride
  • CAT. No.A370054
  • CAS. No.198904-87-9
  • Mol. F.C22H29Cl3N4O
  • Mol. W.471.85 g/mol
  • Stock Status:Custom Synthesis
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Atazanavir Impurity 6
Atazanavir Impurity 6
  • CAT. No.A370055
  • CAS. No.1006868-81-0
  • Mol. F.C32H42N4O5
  • Mol. W.562.70 g/mol
  • Stock Status:Custom Synthesis
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Atazanavir Impurity 35
Atazanavir Impurity 35
  • CAT. No.A370056
  • CAS. No.857904-20-2
  • Mol. F.C27H34N4O3
  • Mol. W.462.58 g/mol
  • Stock Status:Custom Synthesis
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N`-(3-tert-Butoxycarbonylamino-2-hydroxy-4-phenyl-butyl)-N`-(4-pyridin-2-yl-benzyl)-hydrazine carboxylic acid sec-butyl ester
N`-(3-tert-Butoxycarbonylamino-2-hydroxy-4-phenyl-butyl)-N`-(4-pyridin-2-yl-benzyl)-hydrazine carboxylic acid sec-butyl ester
  • CAT. No.A370057
  • CAS. No.NA
  • Mol. F.C32H42N4O5
  • Mol. W.562.70 g/mol
  • Stock Status:Custom Synthesis
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Atazanavir Impurity 28
Atazanavir Impurity 28
  • CAT. No.A370058
  • CAS. No.107202-43-7
  • Mol. F.C15H21NO2
  • Mol. W.247.33 g/mol
  • Stock Status:Custom Synthesis
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Atazanavir Impurity 33
Atazanavir Impurity 33
  • CAT. No.A370059
  • CAS. No.NA
  • Mol. F.C14H26N2O5
  • Mol. W.302.37 g/mol
  • Stock Status:Custom Synthesis
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Atazanavir Formyl Analog
Atazanavir Formyl Analog
  • CAT. No.A370060
  • CAS. No.NA
  • Mol. F.C37H50N6O6
  • Mol. W.674.80 g/mol
  • Stock Status:Custom Synthesis
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Atazanavir RS3 Impurity
Atazanavir RS3 Impurity
  • CAT. No.A370061
  • CAS. No.765254-57-7
  • Mol. F.C30H39N5O4
  • Mol. W.533.66 g/mol
  • Stock Status:Custom Synthesis
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Atazanavir Impurity 2
Atazanavir Impurity 2
  • CAT. No.A370062
  • CAS. No.1185167-55-8
  • Mol. F.C8H14N2S.2HCl
  • Mol. W.243.20 g/mol
  • Stock Status:Custom Synthesis
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Atazanavir Impurity 4
Atazanavir Impurity 4
  • CAT. No.A370063
  • CAS. No.NA
  • Mol. F.C8H15NO3
  • Mol. W.173.21 g/mol
  • Stock Status:Custom Synthesis
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Atazanavir Impurity 5
Atazanavir Impurity 5
  • CAT. No.A370064
  • CAS. No.NA
  • Mol. F.C14H26N2O5
  • Mol. W.302.37 g/mol
  • Stock Status:Custom Synthesis
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Metabolites

Atazanavir EP Impurity A
Atazanavir EP Impurity A
  • CAT. No.A370004
  • CAS. No.4385-62-0
  • Mol. F.C12H9NO2
  • Mol. W.199.21 g/mol
  • Stock Status:Instock
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Isotope Labelled Compounds

Atazanavir-D5
Atazanavir-D5
  • CAT. No.A370001
  • CAS. No.198904-31-3(unlabelled)
  • Mol. F.C38H47D5N6O7
  • Mol. W.709.89 g/mol
  • Stock Status:Custom Synthesis
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Atazanavir-D6
Atazanavir-D6
  • CAT. No.A370016
  • CAS. No.1092540-50-5
  • Mol. F.C38H46D6N6O7
  • Mol. W.710.89 g/mol
  • Stock Status:Under Synthesis
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