Atazanavir

Atazanavir Related Products

Venkatasai is a leading innovator in the field of pharmaceutical reference standards, offering high-quality Reference Standards of Atazanavir, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope-labeled compounds, and nitrosamines (N-NO products). Our Atazanavir impurity reference standards play a vital role in pharmaceutical research, supporting product development, ANDA and DMF filings, quality control (QC), method validation, and stability studies. They are also instrumental in identifying unknown impurities and evaluating genotoxic potential. All Atazanavir-related products are thoroughly characterized and supplied with comprehensive Certificates of Analysis (COA) and analytical data that comply with regulatory standards. EP/USP traceable standards can also be provided upon request. Furthermore, all supplied products undergo periodic re-testing to ensure continued quality and reliability.

Atazanavir

Methyl [(5S,10S,11S,14S)-11-benzyl-5-tert-butyl-10-hydroxy-15,15-dimethyl-3,6,13-trioxo-8-[[4-(pyridin-2-yl)phenyl]methyl]-2-oxa-4,7,8,12-tetraazahexadecan-14-yl]carbamate (as per EP)
CAT No: VS-A092000
CAS No: 198904-31-3
Mol.F.: C38H52N6O7
Mol.Wt.: 704.9
Status: Custom Synthesis

Atazanavir Benzylidenehydrazine Analogue (RS)

(2R,3S)-3-amino-4-phenyl-1-(1-(4-(pyridin-2-yl)benzyl)-2-((E)-4-(pyridin-2-yl)benzylidene)hydrazinyl)butan-2-ol
CAT No: VS-A092025
CAS No: N/A
Mol.F.: C34H33N5O
Mol.Wt.: 527.7
Status: Custom Synthesis

Atazanavir benzylidenehydrazine carbamate (RSS)

Methyl ((S)-1-(((2S,3R)-3-hydroxy-1-phenyl-4-(1-(4-(pyridin-2-yl)benzyl)-2-((E)-4-(pyridin-2-yl)benzylidene)hydrazinyl)butan-2-yl)amino)-3,3-dimethyl-1-oxobutan-2-yl)carbamate
CAT No: VS-A092028
CAS No: N/A
Mol.F.: C42H46N6O4
Mol.Wt.: 698.9
Status: Custom Synthesis

Atazanavir Di-tert-Butyl Impurity

N'(3-TertButoxycarbonyl amino-2hydroxy-4-phenyl-butyl) N'-(4-pyridin-2-yl-benzyl) hyrazine carboxylic acid sec-butyl ester
CAT No: VS-A092063
CAS No: NA
Mol.F.: C32H42N4O5?
Mol.Wt.: 562.7
Status: Custom Synthesis

Atazanavir Diol Impurity

Tert-butyl (3,4-dihydroxy-1-phenylbutan-2-yl)carbamate
CAT No: VS-A092031
CAS No: 73488-74-1
Mol.F.: C15H23NO4
Mol.Wt.: 281.4
Status: Custom Synthesis

Atazanavir EP Impurity A

4-(pyridin-2-yl)benzoic acid (as per EP)
CAT No: VS-A092002
CAS No: 4385-62-0
Mol.F.: C12H9NO2
Mol.Wt.: 199.2
Status: Custom Synthesis

Atazanavir EP Impurity B

4-(pyridin-2-yl)benzaldehyde (as per EP)
CAT No: VS-A092003
CAS No: 127406-56-8
Mol.F.: C12H9NO
Mol.Wt.: 183.2
Status: Custom Synthesis

Atazanavir EP Impurity C

Methyl [(5S,10S,11S,14S)-11-benzyl-5-tert-butyl-10-hydroxy-15,15-dimethyl-3,6,13-trioxo-2-oxa-4,7,8,12-tetraazahexadecan-14-yl]carbamate (as per EP)
CAT No: VS-A092004
CAS No: 1192224-24-0
Mol.F.: C26H43N5O7?
Mol.Wt.: 537.7
Status: Custom Synthesis

Atazanavir EP Impurity D

(2S,3S)-3-amino-4-phenyl-1-[(E)-1-[[4-(pyridin-2-yl)phenyl]methyl]-2-[[4-(pyridin-2-yl)phenyl]methylidene]hydrazin-1-yl]butan-2-ol (as per EP)
CAT No: VS-A092005
CAS No: N/A
Mol.F.: C34H33N5O?
Mol.Wt.: 527.7
Status: Custom Synthesis

Atazanavir EP Impurity E

Methyl [(5S,10R,11S,14S)-11-benzyl-5-tert-butyl-10-hydroxy-15,15-dimethyl-3,6,13-trioxo-8-[[4-(pyridin-2-yl)phenyl]methyl]-2-oxa-4,7,8,12-tetraazahexadecan-14-yl]carbamate (as per EP)
CAT No: VS-A092006
CAS No: 1292296-09-3
Mol.F.: C38H52N6O7
Mol.Wt.: 704.9
Status: Custom Synthesis

Atazanavir EP Impurity F

Methyl [(5R,10S,11S,14S)-11-benzyl-5-tert-butyl-10-hydroxy-15,15-dimethyl-3,6,13-trioxo-8-[[4-(pyridin-2-yl)phenyl]methyl]-2-oxa-4,7,8,12-tetraazahexadecan-14-yl]carbamate (as per EP)
CAT No: VS-A092007
CAS No: 1332981-14-2
Mol.F.: C38H52N6O7?
Mol.Wt.: ?704.9
Status: Custom Synthesis

Atazanavir EP Impurity G

Methyl [(5S,10S,11S,14R)-11-benzyl-5-tert-butyl-10-hydroxy-15,15-dimethyl-3,6,13-trioxo-8-[[4-(pyridin-2-yl)phenyl]methyl]-2-oxa-4,7,8,12-tetraazahexadecan-14-yl]carbamate (as per EP)
CAT No: VS-A092008
CAS No: 1332981-16-4
Mol.F.: C38H52N6O7?
Mol.Wt.: ?704.9
Status: Custom Synthesis

Atazanavir EP Impurity H

Methyl [(5S,10R,11R,14S)-11-benzyl-5-tert-butyl-10-hydroxy-15,15-dimethyl-3,6,13-trioxo-8-[[4-(pyridin-2-yl)phenyl]methyl]-2-oxa-4,7,8,12-tetraazahexadecan-14-yl]carbamate (as per EP)
CAT No: VS-A092009
CAS No: N/A
Mol.F.: C38H52N6O7
Mol.Wt.: ?704.9
Status: Custom Synthesis

Atazanavir EP Impurity I

Methyl [(2S)-1-[[(2S,3S)-3-hydroxy-1-phenyl-4-[(E)-1-[[4-(pyridin-2-yl)phenyl]methyl]-2-[[4-(pyridin-2-yl)phenyl]methylidene]hydrazin-1-yl]butan-2-yl]amino]-3,3-dimethyl-1-oxobutan-2-yl]carbamate (as per EP)
CAT No: VS-A092010
CAS No: N/A
Mol.F.: C42H46N6O4?
Mol.Wt.: 698.9
Status: Custom Synthesis

Atazanavir EP Impurity J

Tert-butyl 2-[(2S,3S)-3-(tert-butoxyformamido)-2-hydroxy-4-phenylbutyl]-2-[[4-(pyridin-2-yl)phenyl]methyl]hydrazine-1-carboxylate (as per EP)
CAT No: VS-A092011
CAS No: 198904-86-8
Mol.F.: C32H42N4O5?
Mol.Wt.: ?562.7
Status: Custom Synthesis

Atazanavir EP Impurity K

(2S)-2-(Methoxyformamido)-3,3-dimethylbutanoic acid (as per EP) (S)-2-[(Methoxycarbonyl)amino]-3,3-dimethylbutanoic acid (as per USP)
CAT No: VS-A092012
CAS No: 162537-11-3
Mol.F.: C8H15NO4?
Mol.Wt.: ?189.2
Status: Custom Synthesis

Atazanavir Hydrazine Analog

(2S,3S)-3-amino-4-phenyl-1-(1-(4-(pyridin-2-yl)benzyl)hydrazinyl)butan-2-ol
CAT No: VS-A092001
CAS No: 437713-06-9
Mol.F.: C22H26N4O
Mol.Wt.: 362.5
Status: Custom Synthesis

Atazanavir Hydrazine Analog

(2R,3S)-3-amino-4-phenyl-1-(1-(4-(pyridin-2-yl)benzyl)hydrazinyl)butan-2-ol
CAT No: VS-A092024
CAS No: N/A
Mol.F.: C22H26N4O
Mol.Wt.: 362.5
Status: Custom Synthesis

Atazanavir Hydrazine imp

(2S,3S)-3-Amino-4-phenyl-1-(1-(4-(pyridin-2-yl)benzyl)hydrazinyl)butan-2-ol Trihydrochloride
CAT No: VS-A092054
CAS No: 198904-87-9
Mol.F.: C22H26N4O.3HCl
Mol.Wt.: 471.85
Status: Custom Synthesis

Atazanavir Impuirty 5

(3R,4R,5S,6R)-5-(((4aR,7R,8R,8aR)-7,8-dihydroxy-2-(4-(pyridin-2-yl)phenyl)hexahydropyrano[3,2-d][1,3]dioxin-6-yl)oxy)-6-(hydroxymethyl)tetrahydro-2H-pyran-2,3,4-triol
CAT No: VS-A092035
CAS No: N/A
Mol.F.: C24H29NO11?
Mol.Wt.: 507.5
Status: Custom Synthesis

Atazanavir Impurity 10 (4S,5R-Diasteroisomer of DIBOC)

Tert-butyl 2-((2S,3R)-3-((tert-butoxycarbonyl)amino)-2-hydroxy-4-phenylbutyl)-2-(4-(pyridin-2-yl)benzyl)hydrazine-1-carboxylate
CAT No: VS-A092041
CAS No: N/A
Mol.F.: C32H42N4O5?
Mol.Wt.: ?562.7
Status: Custom Synthesis

Atazanavir Impurity 11

Tert-butyl 2-(4-(piperidin-2-yl)benzyl)hydrazine-1-carboxylate
CAT No: VS-A092042
CAS No: 2307732-33-6
Mol.F.: C17H27N3O2?
Mol.Wt.: 305.4
Status: Custom Synthesis

Atazanavir Impurity 12

Tert-butyl (E)-2-(4-(pyridin-2-yl)benzylidene)hydrazine-1-carboxylate
CAT No: VS-A092043
CAS No: 198904-84-6
Mol.F.: C17H19N3O2?
Mol.Wt.: ?297.4
Status: Custom Synthesis

Atazanavir Impurity 13

(E)-2-(4-(hydrazonomethyl)phenyl)pyridine
CAT No: VS-A092044
CAS No: 257907-05-4
Mol.F.: C12H11N3?
Mol.Wt.: 197.2
Status: Custom Synthesis

Atazanavir Impurity 14

2-(4-(hydrazinylmethyl)phenyl)piperidine
CAT No: VS-A092045
CAS No: 2307784-33-2
Mol.F.: C12H19N3?
Mol.Wt.: 205.3
Status: Custom Synthesis

Atazanavir Impurity 15

2-?[(2S,?3S)?-?3-?amino-?2-?hydroxy-?4-?phenylbutyl]?-?2-?[[4-?(2-?pyridinyl)?phenyl]?methyl]?hydrazide
CAT No: VS-A092046
CAS No: 857900-54-0
Mol.F.: C30H39N5O4
Mol.Wt.: 533.7
Status: Custom Synthesis

Atazanavir Impurity 16

(5S,10S,11S,14S)-11-benzyl-5,14-di-tert-butyl-3,6,13,16-tetraoxo-8-(4-(pyridin-2-yl)benzyl)-2,17-dioxa-4,7,8,12,15-pentaazaoctadecan-10-yl (S)-2-((methoxycarbonyl)amino)-3,3-dimethylbutanoate
CAT No: VS-A092047
CAS No: 2131010-71-2
Mol.F.: C46H65N7O10
Mol.Wt.: 876.1
Status: Custom Synthesis

Atazanavir Impurity 17 (RSSSS)

Dimethyl ((3R,8S,9S,13S,14S,19S)-9,13-dibenzyl-8,14-dihydroxy-2,2,20-trimethyl-4,11,18-trioxo-6,16-bis(4-(pyridin-2-yl)benzyl)-5,6,10,12,16,17-hexaazahenicosane-3,19-diyl)dicarbamate
CAT No: VS-A092048
CAS No: N/A
Mol.F.: C60H74N10O9
Mol.Wt.: 1079.3
Status: Custom Synthesis

Atazanavir Impurity 18 (SRS)

Methyl ((S)-1-(2-((2R,3S)-3-amino-2-hydroxy-4-phenylbutyl)-2-(4-(pyridin-2-yl)benzyl)hydrazinyl)-3,3-dimethyl-1-oxobutan-2-yl)carbamate
CAT No: VS-A092049
CAS No: 1003889-62-0
Mol.F.: C30H39N5O4
Mol.Wt.: 533.7
Status: Custom Synthesis

Atazanavir Impurity 19

11-benzyl-5,14-di-tert-butyl-3,6,13,16-tetraoxo-8-(4-(pyridin-2-yl)benzyl)-2,17-dioxa-4,7,8,12,15-pentaazaoctadecan-10-yl 2-amino-3,3-dimethylbutanoate
CAT No: VS-A092050
CAS No: N/A
Mol.F.: C44H63N7O8
Mol.Wt.: 818
Status: Custom Synthesis

Atazanavir Impurity 2

Methyl ((5S,10S,11S,14S)-11-benzyl-10-hydroxy-5-isopropyl-15,15-dimethyl-3,6,13-trioxo-8-(4-(pyridin-2-yl)benzyl)-2-oxa-4,7,8,12-tetraazahexadecan-14-yl)carbamate
CAT No: VS-A092032
CAS No: 198904-33-5
Mol.F.: C37H50N6O7
Mol.Wt.: 690.9
Status: Custom Synthesis

Atazanavir Impurity 24

(3aS,4R,7R,8S,9S,10R,11R,13R,16R,16aR)-10-(((2S,4S,6R)-4-(dimethylamino)-3-hydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-4-ethyl-2,11-dihydroxy-8-(((2R,4R,5S,6S)-5-hydroxy-4-methoxy-4,6-dimethyltetrahydro-2H-pyran-2-yl)oxy)-3a,7,9,11,13,15,16-heptamethyld
CAT No: VS-A092051
CAS No: N/A
Mol.F.: C38H71BN2O13
Mol.Wt.: 774.8
Status: Custom Synthesis

Atazanavir Impurity 25

((S)-1-(((2S,3S)-3-hydroxy-1-phenyl-4-(1-(4-(pyridin-2-yl)benzyl)-2-((E)-4-(pyridin-2-yl)benzylidene)hydrazinyl)butan-2-yl)amino)-3,3-dimethyl-1-oxobutan-2-yl)(methyl)carbamate
CAT No: VS-A092052
CAS No: N/A
Mol.F.: C42H45N6O4
Mol.Wt.: 697.9
Status: Custom Synthesis

Atazanavir Impurity 29

(S,R)-(1-Oxiranyl-2-phenyl-ethyl)-carbamic acid tert-butyl ester
CAT No: VS-A092061
CAS No: 156474-22-5
Mol.F.: C15H21NO3
Mol.Wt.: 263.3
Status: Custom Synthesis

Atazanavir Impurity 3

Methyl ((5R,10S,11S,14S)-11-benzyl-10-hydroxy-5-isopropyl-15,15-dimethyl-3,6,13-trioxo-8-(4-(pyridin-2-yl)benzyl)-2-oxa-4,7,8,12-tetraazahexadecan-14-yl)carbamate
CAT No: VS-A092033
CAS No: N/A
Mol.F.: C37H50N6O7
Mol.Wt.: 690.9
Status: Custom Synthesis

Atazanavir Impurity 30

(R)-2-((Methoxycarbonyl)amino)-3,3-dimethylbutanoic Acid
CAT No: VS-A092062
CAS No: 1191091-65-2
Mol.F.: C8H15NO4
Mol.Wt.: 189.21
Status: Custom Synthesis

Atazanavir Impurity 33

(S)-2-((S)-2-((methoxycarbonyl)amino)-3,3-dimethylbutanamido)-3,3-dimethylbutanoic acid
CAT No: VS-A092060
CAS No: NA
Mol.F.: C14H26N2O5
Mol.Wt.: 302.4
Status: Custom Synthesis

Atazanavir Impurity 35

Tert-butyl ((2S,3S)-3-hydroxy-1-phenyl-4-(1-(4-(pyridin-2-yl)benzyl)hydrazinyl)butan-2-yl)carbamate
CAT No: VS-A092057
CAS No: 857904-20-2
Mol.F.: C27H34N4O3
Mol.Wt.: 462.6
Status: Custom Synthesis

Atazanavir Impurity 36

(S)-2-((Thoxycarbonyl)amino)-3,3-dimethylbutanoic acid
CAT No: VS-A092053
CAS No: 156990-58-8
Mol.F.: C9H17NO4
Mol.Wt.: 203.2
Status: Custom Synthesis

Atazanavir Impurity 37

1H-Benzo[d][1,2,3]triazol-1-yl (S)-2-((methoxycarbonyl)amino)-3,3-dimethylbutanoate
CAT No: VS-A092064
CAS No: 869285-68-7
Mol.F.: C14H18N4O4
Mol.Wt.: 306.3
Status: Custom Synthesis

Atazanavir Impurity 4

(S)-1-(((2S,3S)-3-hydroxy-1-phenyl-4-(1-(4-(pyridin-2-yl)benzyl)-2-((E)-4-(pyridin-2-yl)benzylidene)hydrazinyl)butan-2-yl)amino)-3,3-dimethyl-1-oxobutan-2-yl methylcarbamate
CAT No: VS-A092034
CAS No: N/A
Mol.F.: C42H46N6O4?
Mol.Wt.: 698.9
Status: Custom Synthesis

Atazanavir Impurity 6 (4R,5S-Diasteroisomer of DIBOC)

Tert-butyl 2-((2R,3S)-3-((tert-butoxycarbonyl)amino)-2-hydroxy-4-phenylbutyl)-2-(4-(pyridin-2-yl)benzyl)hydrazine-1-carboxylate
CAT No: VS-A092036
CAS No: 1006868-81-0
Mol.F.: C32H42N4O5?
Mol.Wt.: ?562.7
Status: Custom Synthesis

Atazanavir Impurity 7

Methyl ((S)-1-(2-((2S,3S)-3-((S)-2-amino-3,3-dimethylbutanamido)-2-hydroxy-4-phenylbutyl)-2-(4-(pyridin-2-yl)benzyl)hydrazinyl)-3,3-dimethyl-1-oxobutan-2-yl)carbamate
CAT No: VS-A092037
CAS No: 1192224-26-2
Mol.F.: C36H50N6O5?
Mol.Wt.: 646.8
Status: Custom Synthesis

Atazanavir Impurity 8

Methyl ((S)-1-(((2S,3S)-4-(2-((S)-2-amino-3,3-dimethylbutanoyl)-1-(4-(pyridin-2-yl)benzyl)hydrazinyl)-3-hydroxy-1-phenylbutan-2-yl)amino)-3,3-dimethyl-1-oxobutan-2-yl)carbamate
CAT No: VS-A092038
CAS No: 1028634-76-5
Mol.F.: C36H50N6O5?
Mol.Wt.: ?646.8
Status: Custom Synthesis

Atazanavir Impurity 9 (4R,5R-Diasteroisomer of DIBOC)

Tert-butyl 2-((2R,3R)-3-((tert-butoxycarbonyl)amino)-2-hydroxy-4-phenylbutyl)-2-(4-(pyridin-2-yl)benzyl)hydrazine-1-carboxylate
CAT No: VS-A092039
CAS No: N/A
Mol.F.: C32H42N4O5?
Mol.Wt.: 562.7
Status: Custom Synthesis

Atazanavir Impurity A

N'-(4- Pyridin-2-yl-benzyl)-hydrazinecarboxylic acid sec-butyl ester
CAT No: VS-A092058
CAS No: NA
Mol.F.: C17H21N3O2
Mol.Wt.: 299.37
Status: Custom Synthesis

Atazanavir Impurity B

Tert-butyl 2-(4-(pyridin-2-yl)benzyl)hydrazine-1-carboxylate
CAT No: VS-A092013
CAS No: 198904-85-7
Mol.F.: C17H21N3O2?
Mol.Wt.: 299.4
Status: Custom Synthesis

Atazanavir Impurity C

Tert-butyl ((S)-1-((R)-oxiran-2-yl)-2-phenylethyl)carbamate
CAT No: VS-A092014
CAS No: 98760-08-8
Mol.F.: C15H21NO3?
Mol.Wt.: ?263.3
Status: Custom Synthesis

Atazanavir R,R,R,R Isomer

Methyl ((5R,8R,9R,14R)-8-benzyl-5-(tert-butyl)-9-hydroxy-15,15-dimethyl-3,6,13-trioxo-11-(4-(pyridin-2-yl)benzyl)-2-oxa-4,7,11,12-tetraazahexadecan-14-yl)carbamate
CAT No: VS-A092023
CAS No: N/A
Mol.F.: C38H52N6O7
Mol.Wt.: 704.9
Status: Custom Synthesis

Atazanavir R,R,S,R-Diastereomer

Methyl ((5R,10R,11S,14R)-11-benzyl-5-(tert-butyl)-10-hydroxy-15,15-dimethyl-3,6,13-trioxo-8-(4-(pyridin-2-yl)benzyl)-2-oxa-4,7,8,12-tetraazahexadecan-14-yl)carbamate
CAT No: VS-A092029
CAS No: N/A
Mol.F.: C38H52N6O7
Mol.Wt.: 704.9
Status: Custom Synthesis

Atazanavir R,R,S,S-Diastereomer

Methyl ((5S,8S,9R,14R)-8-benzyl-5-(tert-butyl)-9-hydroxy-15,15-dimethyl-3,6,13-trioxo-11-(4-(pyridin-2-yl)benzyl)-2-oxa-4,7,11,12-tetraazahexadecan-14-yl)carbamate
CAT No: VS-A092026
CAS No: N/A
Mol.F.: C38H52N6O7
Mol.Wt.: 704.9
Status: Custom Synthesis

Atazanavir R,S,R,R-Diastereomer

Methyl ((5R,8R,9S,14R)-8-benzyl-5-(tert-butyl)-9-hydroxy-15,15-dimethyl-3,6,13-trioxo-11-(4-(pyridin-2-yl)benzyl)-2-oxa-4,7,11,12-tetraazahexadecan-14-yl)carbamate
CAT No: VS-A092030
CAS No: N/A
Mol.F.: C38H52N6O7
Mol.Wt.: 704.9
Status: Custom Synthesis

Atazanavir R,S,S,R-Diastereomer

Methyl ((5R,10S,11S,14R)-11-benzyl-5-(tert-butyl)-10-hydroxy-15,15-dimethyl-3,6,13-trioxo-8-(4-(pyridin-2-yl)benzyl)-2-oxa-4,7,8,12-tetraazahexadecan-14-yl)carbamate
CAT No: VS-A092015
CAS No: 1292296-11-7
Mol.F.: C38H52N6O7?
Mol.Wt.: 704.9
Status: Custom Synthesis

Atazanavir RS12 Impurity

Dimethyl ((3R,6R,7R,15S,16S,19S)-6,16-dibenzyl-7,15-dihydroxy-2,2,20,20-tetramethyl-4,11,18-trioxo-9,13-bis(4-(pyridin-2-yl)benzyl)-5,9,10,12,13,17-hexaazahenicosane-3,19-diyl)dicarbamate
CAT No: VS-A092022
CAS No: N/A
Mol.F.: C61H76N10O9
Mol.Wt.: 1093.3
Status: Custom Synthesis

Atazanavir RS3 Impurity

Methyl (S)-1-((2S,3S)-3-hydroxy-1-phenyl-4-(1-(4-(pyridin-2-yl)benzyl)hydrazinyl)butan-2-ylamino)-3,3-dimethyl-1-oxobutan-2-ylcarbamate
CAT No: VS-A092019
CAS No: 765254-57-7
Mol.F.: C30H39N5O4
Mol.Wt.: 533.7
Status: Custom Synthesis

Atazanavir RS8 Impurity

Methyl (S)-1-((2S,3S)-4-(((R)-4-tert-butyl-2,5-dioxoimidazolidin-1-yl)(4-(pyridin-2-yl)benzyl)amino)-3-hydroxy-1-phenylbutan-2-ylamino)-3,3-dimethyl-1-oxobutan-2-ylcarbamate
CAT No: VS-A092018
CAS No: 1292296-12-8
Mol.F.: C37H48N6O6
Mol.Wt.: 672.8
Status: Custom Synthesis

Atazanavir RS9 Impurity

Methyl ((S)-1-(2-((2S,3S)-3-((R)-4-(tert-butyl)-2,5-dioxoimidazolidin-1-yl)-2-hydroxy-4-phenylbutyl)-2-(4-(pyridin-2-yl)benzyl)hydrazinyl)-3,3-dimethyl-1-oxobutan-2-yl)carbamate
CAT No: VS-A092021
CAS No: 1292296-13-9
Mol.F.: C37H48N6O6
Mol.Wt.: 672.8
Status: Custom Synthesis

Atazanavir S,R,S,R-Diastereomer

Methyl ((5R,8S,9R,14S)-8-benzyl-5-(tert-butyl)-9-hydroxy-15,15-dimethyl-3,6,13-trioxo-11-(4-(pyridin-2-yl)benzyl)-2-oxa-4,7,11,12-tetraazahexadecan-14-yl)carbamate
CAT No: VS-A092027
CAS No: N/A
Mol.F.: C38H52N6O7
Mol.Wt.: 704.9
Status: Custom Synthesis

Atazanavir S,S,R,S-Diastereomer

Methyl ((5S,10S,11R,14S)-11-benzyl-5-(tert-butyl)-10-hydroxy-15,15-dimethyl-3,6,13-trioxo-8-(4-(pyridin-2-yl)benzyl)-2-oxa-4,7,8,12-tetraazahexadecan-14-yl)carbamate
CAT No: VS-A092016
CAS No: 1292296-10-6
Mol.F.: C38H52N6O7?
Mol.Wt.: 704.9
Status: Custom Synthesis

Atazanavir sulfate

Methyl [(5S,10S,11S,14S)-11-benzyl-5-tert-butyl-10-hydroxy-15,15-dimethyl-3,6,13-trioxo-8-[[4-(pyridin-2-yl)phenyl]methyl]-2-oxa-4,7,8,12-tetraazahexadecan-14-yl]carbamate sulfate (as per EP)
CAT No: VS-A092020
CAS No: 229975-97-7
Mol.F.: C38H52N6O7 : H2SO4
Mol.Wt.: 704.9 : 98.1
Status: Custom Synthesis

5-Hydroxymethyl furfural

5-(hydroxymethyl)furan-2-carbaldehyde
CAT No: VS-A092017
CAS No: 67-47-0
Mol.F.: C6H6O3
Mol.Wt.: 126.1
Status: Custom Synthesis

N'-(4- Pyridin-2-yl-benzyl)-hydrazinecarboxylic acid sec-butyl ester

N'-(4- Pyridin-2-yl-benzyl)-hydrazinecarboxylic acid sec-butyl ester
CAT No: VS-A092055
CAS No: NA
Mol.F.: C17H21N3O2
Mol.Wt.: 299.37
Status: Custom Synthesis

N-(Methoxycarbonyl)-3-methyl-L-valine 2-[[4-(2-pyridinyl)phenyl]methyl]hydrazide

L-Valine,?N-(methoxycarbonyl)-3-methyl-, 2-[[4-(2-pyridinyl)phenyl]methyl]hydrazide
CAT No: VS-A092056
CAS No: 857904-02-0
Mol.F.: C20H26N4O3
Mol.Wt.: 370.45
Status: Custom Synthesis

rac-Atazanavir Impurity 9

Tert-butyl 2-(3-((tert-butoxycarbonyl)amino)-2-hydroxy-4-phenylbutyl)-2-(4-(pyridin-2-yl)benzyl)hydrazine-1-carboxylate
CAT No: VS-A092040
CAS No: 2666351-84-2
Mol.F.: C32H42N4O5?
Mol.Wt.: 562.7
Status: Custom Synthesis

S-Boc Olefin Impurity of Atazanavir

((S)-1-Benzyl-allyl)-carbamic acid tert-butyl ester(s-Boc Olefin)
CAT No: VS-A092059
CAS No: 107202-43-7
Mol.F.: C15H21NO2
Mol.Wt.: 247.3
Status: Custom Synthesis

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