![(2R,3R)-3-[(t-Butoxycarbonyl)amino]-4-phenyl-1,2-epoxybutane chemical structure](/media/structures/NVPOUMXZERMIJK-OLZOCXBDSA-N.svg)
(2R,3R)-3-[(t-Butoxycarbonyl)amino]-4-phenyl-1,2-epoxybutane
- CAS
- 156474-21-4
- Formula
- C15H21NO3
- MW
- 263.33 g/mol
VQ-047456
Impurity reference standards
Atazanavir impurities & reference standards
Characterised Atazanavir impurities, degradation products and related compounds for analytical method development, validation, QC release and regulatory filings.
42reference materials
1isotope-labelled
COAHPLC · NMR · MS on request
(2R,3S)-3-(tert-Butoxycarbonyl)amino-1,2-epoxy-4-phenylbutane
- CAS
- 98760-08-8
- Formula
- C15H21NO3
- MW
- 263.33 g/mol
VQ-024384
(2R,3S)-3-(tert-Butoxycarbonylamino)-1-chloro-2-hydroxy-4-phenylbutane
- CAS
- 162536-40-5
- Formula
- C15H22ClNO3
- MW
- 299.79 g/mol
VQ-025207
(2S,3R)-3-(tert-Butoxycarbonylamino)-1,2-epoxy-4-phenylbutane
- CAS
- 156474-22-5
- Formula
- C15H21NO3
- MW
- 263.33 g/mol
VQ-027124
![(2S)-2-[(Ethoxycarbonyl)amino]-3,3-dimethylbutanoic acid chemical structure](/media/structures/BGWONUWPOUBGIO-ZCFIWIBFSA-N.svg)
(2S)-2-[(Ethoxycarbonyl)amino]-3,3-dimethylbutanoic acid
- CAS
- 156990-58-8
- Formula
- C9H17NO4
- MW
- 203.24 g/mol
VQ-029233
(3S)-3-(tert-Butoxycarbonyl)amino-1-chloro-4-phenyl-2-butanone
- CAS
- 102123-74-0
- Formula
- C15H20ClNO3
- MW
- 297.78 g/mol
VQ-039057
![(S)-1H-Benzo[d][1,2,3]triazol-1-yl 2-((methoxycarbonyl)amino)-3,3-dimethylbutanoate](/media/pack/s-1h-benzod123triazol-1-yl-2-methoxycarbonylamino-33-dimethylbutanoate.svg?v=3)
(S)-1H-Benzo[d][1,2,3]triazol-1-yl 2-((methoxycarbonyl)amino)-3,3-dimethylbutanoate
- CAS
- 869285-68-7
- Formula
- C14H18N4O4
- MW
- 306.32 g/mol
VQ-029234
(S)-tert-Butyl (1-phenylbut-3-en-2-yl)carbamate
- CAS
- 107202-43-7
- Formula
- C15H21NO2
- MW
- 247.33 g/mol
VQ-035816
![2-[[4-(2-Pyridinyl)phenyl]methyl]hydrazinecarboxylic Acid 1,1-Dimethylethyl Ester chemical structure](/media/structures/GIMJTKJSKPENNG-UHFFFAOYSA-N.svg)
2-[[4-(2-Pyridinyl)phenyl]methyl]hydrazinecarboxylic Acid 1,1-Dimethylethyl Ester
- CAS
- 198904-85-7
- Formula
- C17H21N3O2
- MW
- 299.37 g/mol
VQ-024383
Atazanavir Impurity 6 (4R,5S-Diasteroisomer of DIBOC)
- CAS
- 1006868-81-0
- Formula
- C32H42N4O5
- MW
- 562.7 g/mol
VQ-024385
Des-N-(methoxycarbonyl)-L-tert-leucine Atazanavir Trihydrochloride
- CAS
- 198904-87-9
- Formula
- C22H29Cl3N4O
- MW
- 471.8 g/mol
VQ-029231
![Methyl N-[(2S)-1-[2-[(2S,3S)-3-[[(2S)-2-amino-3,3-dimethylbutanoyl]amino]-2-hydroxy-4-phenylbutyl]-2-[(4-pyridin-2-ylphenyl)methyl]hydrazinyl]-3,3-dimethyl-1-oxobutan-2-yl]carbamate chemical structure](/media/structures/CUXBSWCTEGIRQD-SYQUUIDJSA-N.svg)
Methyl N-[(2S)-1-[2-[(2S,3S)-3-[[(2S)-2-amino-3,3-dimethylbutanoyl]amino]-2-hydroxy-4-phenylbutyl]-2-[(4-pyridin-2-ylphenyl)methyl]hydrazinyl]-3,3-dimethyl-1-oxobutan-2-yl]carbamate
- CAS
- 1192224-26-2
- Formula
- C36H50N6O5
- MW
- 646.8 g/mol
VQ-043985
Mono de-protected impurity of Atazanavir Sulfate
- CAS
- 857904-20-2
- Formula
- C27H34N4O3
- MW
- 462.6 g/mol
VQ-024386
N-Methyl-2-(1-methylethyl)-4-thiazolemethanamine dihydrochloride
- CAS
- 1185167-55-8
- Formula
- C8H16Cl2N2S
- MW
- 243.2 g/mol
VQ-029236
FAQs — Atazanavir impurities
Which Atazanavir impurities do you supply?
We list 42 Atazanavir-related reference materials, including process impurities, degradation products, stable-isotope-labelled standards and related compounds. Each is supplied with a COA, and characterisation data (HPLC, 1H-NMR, MS, IR) can be provided on request.
What are Atazanavir impurity standards used for?
They are used for analytical method development and validation, impurity identification and quantification, forced-degradation and stability studies, and to support ANDA, DMF and other regulatory submissions under ICH Q3A/Q3B (and ICH M7 for mutagenic impurities).
Can you synthesise a Atazanavir impurity that is not listed?
Yes. Our custom synthesis service can prepare and characterise unlisted impurities, metabolites and labelled analogues from milligram to gram scale. Share the structure or name and required quantity for a quotation.
Request Atazanavir impurity standards
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