Active pharmaceutical ingredient (API) impurities for research

All products contained in this category are intended for laboratory use only, and are not meant for human consumption.

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Product data	Purity	Price range	Estimated delivery
Linezolid Related Compound A ((R)-5-(azidomethyl)-3-(3-fluoro-4-morpholinophenyl)oxazolidin-2-one) REF: 45-1367570CAS: 168828-84-0	- - -	1,371.00 €	Fri 27 Dec 24
Cefprozil Related Compound D ((6R,7R)-7-amino-8-oxo-3-[(Z)-prop-1-enyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid) REF: 45-1097986CAS: 106447-44-3	- - -	1,371.00 €	Fri 27 Dec 24
Cilostazol Related Compound B (6-[4-(1-Cyclohexyl-1H-tetrazol-5-yl)-butoxy]-1H-quinolin-2-one) REF: 45-1134175CAS: 73963-62-9	- - -	1,371.00 €	Fri 27 Dec 24
Diluted Isosorbide Mononitrate Related Compound A (1,4:3,6-Dianhydro-D-glucitol 2-nitrate in lactose) REF: 45-1353113CAS: 16106-20-0	- - -	1,596.00 €	Fri 27 Dec 24
Cidofovir Enantiomer (1-[(R)-3-Hydroxy-2-(phosphonomethoxy)propyl]cytosine dihydrate) REF: 45-1133864	- - -	589.00 €	Fri 27 Dec 24
Verapamil Related Compound A (3,4-Dimethoxy-α-[3-(methylamino)propyl]-α-(1-methylethyl)-benzeneacetonitrile monohydrochloride) REF: 45-1711304CAS: 67775-97-7	- - -	1,371.00 €	Fri 27 Dec 24
Rivastigmine Related Compound F (3-Vinylphenyl ethyl(methyl)carbamate) REF: 45-1604961CAS: 1346602-84-3	- - -	1,477.00 €	Fri 27 Dec 24
Cefprozil (E)-Isomer REF: 45-1098049CAS: 111900-24-4	- - -	1,441.00 €	Fri 27 Dec 24
Fentanyl Related Compound A ((2-bromoethyl)benzene) REF: 45-1269913CAS: 103-63-9	- - -	1,477.00 €	Fri 27 Dec 24
Fluoroquinolonic Acid REF: 45-1278302CAS: 86393-33-1	- - -	1,371.00 €	Fri 27 Dec 24
Allopurinol Related Compound A (3-Amino-4-carboxamidopyrazole Hemisulfate) REF: 45-1013024CAS: 27511-79-1	- - -	1,371.00 €	Fri 27 Dec 24
Palonosetron Related Compound B ((3S)-3-(1-Oxo-5,6-dihydro-1H-benzo[de]isoquinolin-2(4H)-yl)quinuclidine 1-oxide) REF: 45-1492233CAS: 1021456-82-5	- - -	1,477.00 €	Fri 27 Dec 24
Antipyrine Related Compound A (3-Methyl-1-phenyl-1H-pyrazol-5(4H)-one) REF: 45-1040016CAS: 89-25-8	- - -	1,477.00 €	Fri 27 Dec 24
Tigecycline Related Compound B ((4S,4aS,5aR,12aS)-9-Amino-4,7-bis(dimethylamino)-3,10,12,12a-tetrahydroxy-1,11-dioxo-1,4,4a,5,5a,6,11,12a-octahydrotetracene-2- carboxamide hydrochloride (1:x)) REF: 45-1667665CAS: 149934-21-4	- - -	1,477.00 €	Fri 27 Dec 24
Flumazenil Related Compound B (Ethyl 8-hydroxy-5,6-dihydro-5-methyl-6-oxo-4H-imidazol-[1,5-a][1,4]benzodiazepine-3-carboxylate) REF: 45-1273820CAS: 131666-45-0	- - -	1,728.00 €	Fri 27 Dec 24
Zileuton Related Compound B (2-(Benzo[b]thien-2-oyl)benzo[b]thiophene) REF: 45-1724678CAS: 97978-07-9	- - -	1,379.00 €	Fri 27 Dec 24
Candesartan Cilexetil Related Compound F (1-(Cyclohexyloxycarbonyloxy)ethyl 2-ethoxy-1-{[2'-(2-ethyl-2H-tetrazol-5-yl)biphenyl-4-yl]methyl}-1H-benzimidazole-7-carboxylate) REF: 45-1087869CAS: 914613-36-8	- - -	1,477.00 €	Fri 27 Dec 24
D-Valganciclovir (2-[(2-amino-1,6-dihydro-6-oxo-9H-purin-9-yl)-methoxy]-3-hydroxypropyl D-valine ester monohydrochloride) REF: 45-1708015	- - -	1,411.00 €	Fri 27 Dec 24
Temazepam Related Compound G (7-Chloro-1,4-dimethyl-5-phenyl-4,5-dihydro-1H-1,4-benzodiazepine-2,3-dione) REF: 45-1646375CAS: 93329-92-1	- - -	775.00 €	Fri 27 Dec 24
Losartan Related Compound D (5-[4'-({2-Butyl-5-[(5-{4'-[(2-butyl-4-chloro-5-hydroxymethyl-1H-imidazol-1-yl)methyl]biphenyl-2-yl}-1H-tetrazol-1-yl)methyl]-4-chloro-1H-imidazol-1-yl}methyl)biphenyl-2-yl]tetrazol, potassium salt) REF: 45-1370509	- - -	1,552.00 €	Fri 27 Dec 24

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Linezolid Related Compound A ((R)-5-(azidomethyl)-3-(3-fluoro-4-morpholinophenyl)oxazolidin-2-one)

CAS:168828-84-0

Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, nesoi

Formula:

C₁₄H₁₆FN₅O₃

Color and Shape:

White Powder

Molecular weight:

321.12372

Ref: 45-1367570

Estimated delivery in United States, on Friday 27 Dec 2024

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Cefprozil Related Compound D ((6R,7R)-7-amino-8-oxo-3-[(Z)-prop-1-enyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid)

CAS:106447-44-3

Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, nesoi

Formula:

C₁₀H₁₂N₂O₃S

Color and Shape:

White Off-White Powder

Molecular weight:

240.05686

Ref: 45-1097986

Estimated delivery in United States, on Friday 27 Dec 2024

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Cilostazol Related Compound B (6-[4-(1-Cyclohexyl-1H-tetrazol-5-yl)-butoxy]-1H-quinolin-2-one)

CAS:73963-62-9

Aromatic cyclic amides (including cyclic carbamates) and their derivatives; salts thereof

Formula:

C₂₀H₂₅N₅O₂

Color and Shape:

White Brown Powder

Molecular weight:

367.20083

Ref: 45-1134175

Estimated delivery in United States, on Friday 27 Dec 2024

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Diluted Isosorbide Mononitrate Related Compound A (1,4:3,6-Dianhydro-D-glucitol 2-nitrate in lactose)

CAS:16106-20-0

Heterocyclic compounds with oxygen hetero-atom(s) only, nesoi

Formula:

C₆H₉NO₆

Color and Shape:

White Powder

Molecular weight:

191.04299

Ref: 45-1353113

Estimated delivery in United States, on Friday 27 Dec 2024

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Cidofovir Enantiomer (1-[(R)-3-Hydroxy-2-(phosphonomethoxy)propyl]cytosine dihydrate)

Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, …

Formula:

C₈H₁₄N₃O₆P·2H₂O

Color and Shape:

White Off-White Powder

Molecular weight:

315.08315

Ref: 45-1133864

Estimated delivery in United States, on Friday 27 Dec 2024

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Verapamil Related Compound A (3,4-Dimethoxy-α-[3-(methylamino)propyl]-α-(1-methylethyl)-benzeneacetonitrile monohydrochloride)

CAS:67775-97-7

Nitrile function compounds, not elsewhere specified or

Formula:

C₁₇H₂₆N₂O₂·HCl

Color and Shape:

White Powder

Molecular weight:

290.19943

Ref: 45-1711304

Estimated delivery in United States, on Friday 27 Dec 2024

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Rivastigmine Related Compound F (3-Vinylphenyl ethyl(methyl)carbamate)

CAS:1346602-84-3

Aromatic cyclic amides (including cyclic carbamates) and their derivatives; salts thereof

Formula:

C₁₂H₁₅NO₂

Color and Shape:

Colorless Liquid

Molecular weight:

205.11028

Ref: 45-1604961

Estimated delivery in United States, on Friday 27 Dec 2024

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Cefprozil (E)-Isomer

CAS:111900-24-4

Antibiotics nesoi

Formula:

C₁₈H₁₉N₃O₅S·H₂O

Color and Shape:

Yellow Powder

Molecular weight:

389.10454

Ref: 45-1098049

Estimated delivery in United States, on Friday 27 Dec 2024

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Fentanyl Related Compound A ((2-bromoethyl)benzene)

CAS:103-63-9

Halogenated derivatives of aromatic hydrocarbons not el

Formula:

C₈H₉Br

Color and Shape:

Liquid

Molecular weight:

185.07 g/mol

Ref: 45-1269913

Estimated delivery in United States, on Friday 27 Dec 2024

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Fluoroquinolonic Acid

CAS:86393-33-1

Compounds (excluding drugs and pesticides) containing a

Formula:

C₁₃H₉ClFNO₃

Color and Shape:

Beige Powder

Molecular weight:

281.0255

Ref: 45-1278302

Estimated delivery in United States, on Friday 27 Dec 2024

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Allopurinol Related Compound A (3-Amino-4-carboxamidopyrazole Hemisulfate)

CAS:27511-79-1

Compounds containing an unfused pyrazole ring, whether or not hydrogenated, in the structure, nesoi

Formula:

C₄H₆N₄OH₂O₄S

Color and Shape:

Off-White Yellow Powder

Molecular weight:

350.31

Ref: 45-1013024

Estimated delivery in United States, on Friday 27 Dec 2024

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Palonosetron Related Compound B ((3S)-3-(1-Oxo-5,6-dihydro-1H-benzo[de]isoquinolin-2(4H)-yl)quinuclidine 1-oxide)

CAS:1021456-82-5

Lactams not elsewhere specified or included

Formula:

C₁₉H₂₂N₂O₂

Color and Shape:

Yellow Powder

Molecular weight:

310.16813

Ref: 45-1492233

Estimated delivery in United States, on Friday 27 Dec 2024

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Antipyrine Related Compound A (3-Methyl-1-phenyl-1H-pyrazol-5(4H)-one)

CAS:89-25-8

Aromatic or modified aromatic compounds containg an unfused pyrazolering (whether or not hydrogenated) in the …

Formula:

C₁₀H₁₀N₂O

Color and Shape:

White Pale Yellow Powder

Molecular weight:

174.07931

Ref: 45-1040016

Estimated delivery in United States, on Friday 27 Dec 2024

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Tigecycline Related Compound B ((4S,4aS,5aR,12aS)-9-Amino-4,7-bis(dimethylamino)-3,10,12,12a-tetrahydroxy-1,11-dioxo-1,4,4a,5,5a,6,11,12a-octahydrotetracene-2- carboxamide hydrochloride (1:x))

CAS:149934-21-4

Aromatic cyclic amides (including cyclic carbamates) and their derivatives; salts thereof

Formula:

C₂₃H₂₈N₄O₇·HCl

Color and Shape:

Off-White Powder

Molecular weight:

472.1958

Ref: 45-1667665

Estimated delivery in United States, on Friday 27 Dec 2024

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Flumazenil Related Compound B (Ethyl 8-hydroxy-5,6-dihydro-5-methyl-6-oxo-4H-imidazol-[1,5-a][1,4]benzodiazepine-3-carboxylate)

CAS:131666-45-0

Heterocyclic compounds with nitrogen hetero-atom(s) only, aromatic or modified aromatic, nesoi

Formula:

C₁₅H₁₅N₃O₄

Color and Shape:

White Powder

Molecular weight:

301.10626

Ref: 45-1273820

Estimated delivery in United States, on Friday 27 Dec 2024

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Zileuton Related Compound B (2-(Benzo[b]thien-2-oyl)benzo[b]thiophene)

CAS:97978-07-9

Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, nesoi

Formula:

C₁₇H₁₀OS₂

Color and Shape:

Yellow Brown Powder

Molecular weight:

294.01731

Ref: 45-1724678

Estimated delivery in United States, on Friday 27 Dec 2024

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Candesartan Cilexetil Related Compound F (1-(Cyclohexyloxycarbonyloxy)ethyl 2-ethoxy-1-{[2'-(2-ethyl-2H-tetrazol-5-yl)biphenyl-4-yl]methyl}-1H-benzimidazole-7-carboxylate)

CAS:914613-36-8

Heterocyclic compounds with nitrogen hetero-atom(s) only, aromatic or modified aromatic, nesoi

Formula:

C₃₅H₃₈N₆O₆

Color and Shape:

White Off-White Powder

Molecular weight:

638.28528

Ref: 45-1087869

Estimated delivery in United States, on Friday 27 Dec 2024

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D-Valganciclovir (2-[(2-amino-1,6-dihydro-6-oxo-9H-purin-9-yl)-methoxy]-3-hydroxypropyl D-valine ester monohydrochloride)

Compounds containing a pyrimidine ring (whether or not

Formula:

C₁₄H₂₃ClN₆O₅

Color and Shape:

Off-White Powder

Molecular weight:

390.82

Ref: 45-1708015

Estimated delivery in United States, on Friday 27 Dec 2024

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Temazepam Related Compound G (7-Chloro-1,4-dimethyl-5-phenyl-4,5-dihydro-1H-1,4-benzodiazepine-2,3-dione)

CAS:93329-92-1

Heterocyclic compounds (excluding aromatic or modified

Formula:

C₁₇H₁₅ClN₂O₂

Color and Shape:

Powder

Molecular weight:

314.08221

Ref: 45-1646375

Estimated delivery in United States, on Friday 27 Dec 2024

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Losartan Related Compound D (5-[4'-({2-Butyl-5-[(5-{4'-[(2-butyl-4-chloro-5-hydroxymethyl-1H-imidazol-1-yl)methyl]biphenyl-2-yl}-1H-tetrazol-1-yl)methyl]-4-chloro-1H-imidazol-1-yl}methyl)biphenyl-2-yl]tetrazol, potassium salt)

Compounds containing an unfused imidazole ring, whether or not hydrogenated, in the structure, nesoi

Formula:

C₄₄H₄₃Cl₂KN₁₂O

Color and Shape:

Powder

Molecular weight:

864.26969

Ref: 45-1370509

Estimated delivery in United States, on Friday 27 Dec 2024

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