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
Lufenuron Related Compound G (2,5-Dichloro-4-[3-(2,6-difluorobenzoyl)ureido]phenyl phenyl carbonate) REF: 45-1370780	- - -	1,441.00 €	Tue 15 Oct 24
Zoledronic Acid Related Compound A (2-(1H-Imidazol-1-yl)acetic acid) REF: 45-1724838CAS: 22884-10-2	- - -	1,477.00 €	Tue 15 Oct 24
Bisoprolol Related Compound A (1-[4-(Hydroxymethyl)phenoxy]-3-(isopropylamino)propan-2-ol) REF: 45-1075768CAS: 62572-93-4	- - -	1,583.00 €	Tue 15 Oct 24
Darifenacin Related Compound G (5-(2-Bromoethyl)-2,3-dihydrobenzofuran) REF: 45-1164233CAS: 127264-14-6	- - -	1,357.00 €	Tue 15 Oct 24
Tetrahydrozoline Related Compound B (2-(1,2,3,4-Tetrahydronaphthalen-1-yl)-1H-imidazole) REF: 45-1652023CAS: 945389-41-3	- - -	1,222.00 €	Tue 15 Oct 24
Ticagrelor Related Compound A ((1R,2S)-2-(3,4-difluorophenyl)cyclopropan-1-amine (R)-mandelate) REF: 45-1667188CAS: 376608-71-8	- - -	1,866.00 €	Tue 15 Oct 24
Azelastine Related Compound D (4-(4-chlorobenzyl)phthalazin-1(2H)-one) REF: 45-1046191CAS: 53242-88-9	- - -	1,371.00 €	Tue 15 Oct 24
Nitazoxanide Related Compound B (2-Hydroxy-N-(5-nitrothiazol-2-yl) benzamide) REF: 45-1463982CAS: 173903-47-4	- - -	1,371.00 €	Tue 15 Oct 24
Fluvastatin Related Compound B ([R,S-E]-(+/-)-7-[3-(4-fluorophenyl)-1-methylethyl-1H-indol-2-yl]-3,5-dihydroxy-6-heptenoic acid 1,1, dimethylethyl ester) REF: 45-1285964CAS: 129332-29-2	- - -	795.00 €	Tue 15 Oct 24
Lamotrigine Related Compound B (2,3-dichlorobenzoic acid) REF: 45-1356778CAS: 50-45-3	- - -	1,477.00 €	Tue 15 Oct 24
Dinoprostone Related Compound C ((E)-7-{(1R,2R,3R)-3-Hydroxy-2-[(S,E)-3-hydroxyoct-1-en-1-yl]-5-oxocyclopentyl}hept-5-enoic acid) REF: 45-1213136CAS: 36150-00-2	- - -	1,346.00 €	Tue 15 Oct 24
Ketorolac Related Compound A (5-Benzoyl-N-(1,3-dihydroxy-2-(hydroxymethyl)propan-2-yl)-2,3-dihydro-1H-pyrrolizine-1-carboxamide) REF: 45-1356315CAS: 167105-80-8	- - -	1,477.00 €	Tue 15 Oct 24
Loratadine Related Compound B (8-Chloro-11-(1-methylpiperidin-4-ylidene)-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridine) REF: 45-1370291	- - -	1,627.00 €	Tue 15 Oct 24
Prednicarbate Related Compound C (prednisolone-21-propionate) REF: 45-1554931CAS: 5740-62-5	- - -	581.00 €	Tue 15 Oct 24
Doxepin Related Compound C ((E,Z)-3-(Dibenzo[b,e]oxepin-11(6H)-ylidene)-N-methylpropan-1-amine hydrochloride) REF: 45-1225533CAS: 2887-91-4	- - -	1,371.00 €	Tue 15 Oct 24
Flurazepam Related Compound F (7-chloro-5-(2-fluorophenyl)-1,3-dihydro-2H-1,4-benzodiazepin-2-one) REF: 45-1285603CAS: 2886-65-9	- - -	1,292.00 €	Tue 15 Oct 24
Cefuroxime Axetil E-isomers ((1RS,6R,7R)-1-Acetoxyethyl 3-[(carbamoyloxy)methyl]-7-[(E)-2-(furan-2-yl)-2-(methoxyimino)acetamido]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate) REF: 45-1098253CAS: 97232-96-7	- - -	1,411.00 €	Tue 15 Oct 24
Zidovudine Related Compound B (3'-chloro-3'-deoxythymidine) REF: 45-1724521CAS: 25526-94-7	- - -	1,371.00 €	Tue 15 Oct 24
Urea REF: 45-1706698CAS: 57-13-6	- - -	434.00 €	Tue 15 Oct 24
Voriconazole Related Compound F ({(1RS,4SR)-7,7-Dimethyl-2-oxobicyclo[2.2.1]hept-1-yl}methanesulfonic acid) REF: 45-1718063CAS: 5872-08-2	- - -	1,371.00 €	Tue 15 Oct 24

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Lufenuron Related Compound G (2,5-Dichloro-4-[3-(2,6-difluorobenzoyl)ureido]phenyl phenyl carbonate)

Ureines and their derivatives; salts thereof

Formula:

C₂₁H₁₂Cl₂F₂N₂O₅

Color and Shape:

Powder

Molecular weight:

480.00913

Ref: 45-1370780

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Zoledronic Acid Related Compound A (2-(1H-Imidazol-1-yl)acetic acid)

CAS:22884-10-2

Compounds containing an unfused pyridine ring in the structure, nesoi

Formula:

C₅H₆N₂O₂

Color and Shape:

White Powder

Molecular weight:

126.04293

Ref: 45-1724838

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Bisoprolol Related Compound A (1-[4-(Hydroxymethyl)phenoxy]-3-(isopropylamino)propan-2-ol)

CAS:62572-93-4

Amino-alcohols, other than those containing more than one kind of oxygen function, their ethers and …

Formula:

C₁₃H₂₁NO₃

Color and Shape:

Beige Solid

Molecular weight:

239.15214

Ref: 45-1075768

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Darifenacin Related Compound G (5-(2-Bromoethyl)-2,3-dihydrobenzofuran)

CAS:127264-14-6

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

Formula:

C₁₀H₁₁BrO

Color and Shape:

White Pale Yellow Powder

Molecular weight:

225.99933

Ref: 45-1164233

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Tetrahydrozoline Related Compound B (2-(1,2,3,4-Tetrahydronaphthalen-1-yl)-1H-imidazole)

CAS:945389-41-3

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

Formula:

C₁₃H₁₄N₂

Color and Shape:

Off-White White Powder

Molecular weight:

198.1157

Ref: 45-1652023

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Ticagrelor Related Compound A ((1R,2S)-2-(3,4-difluorophenyl)cyclopropan-1-amine (R)-mandelate)

CAS:376608-71-8

Aromatic monoamines not elsewhere specified or included and their derivatives, salts therof

Formula:

C₉H₉F₂N·C₈H₈O₃

Color and Shape:

White Yellow Solid

Molecular weight:

321.11765

Ref: 45-1667188

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Azelastine Related Compound D (4-(4-chlorobenzyl)phthalazin-1(2H)-one)

CAS:53242-88-9

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

Formula:

C₁₅H₁₁ClN₂O

Color and Shape:

White Powder

Molecular weight:

270.05599

Ref: 45-1046191

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Nitazoxanide Related Compound B (2-Hydroxy-N-(5-nitrothiazol-2-yl) benzamide)

CAS:173903-47-4

Compounds containing an unfused thiazole ring (whether or not hydrogenated) in the structure

Formula:

C₁₀H₇N₃O₄S

Color and Shape:

Pale Yellow Powder

Molecular weight:

265.01573

Ref: 45-1463982

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Fluvastatin Related Compound B ([R*,S*-E]-(+/-)-7-[3-(4-fluorophenyl)-1-methylethyl-1H-indol-2-yl]…

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Fluvastatin Related Compound B ([R,S-E]-(+/-)-7-[3-(4-fluorophenyl)-1-methylethyl-1H-indol-2-yl]-3,5-dihydroxy-6-heptenoic acid 1,1, dimethylethyl ester)

CAS:129332-29-2

Aromatic or modified aromatic drugs with nitrogen heter

Formula:

C₂₈H₃₄FNO₄

Color and Shape:

Powder

Molecular weight:

467.24719

Ref: 45-1285964

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Lamotrigine Related Compound B (2,3-dichlorobenzoic acid)

CAS:50-45-3

Aromatic monocarboxylic acids, their anhydrides, halide

Formula:

C₇H₄Cl₂O₂

Color and Shape:

Beige Powder

Molecular weight:

189.95883

Ref: 45-1356778

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Dinoprostone Related Compound C ((E)-7-{(1R,2R,3R)-3-Hydroxy-2-[(S,E)-3-hydroxyoct-1-en-1-yl]-5-oxocyclopentyl}hept-5-enoic acid)

CAS:36150-00-2

Prostaglandins, thromboxanes and leukotrienes, their derivatives and structural analogues

Formula:

C₂₀H₃₂O₅

Color and Shape:

Solid

Molecular weight:

352.22497

Ref: 45-1213136

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Ketorolac Related Compound A (5-Benzoyl-N-(1,3-dihydroxy-2-(hydroxymethyl)propan-2-yl)-2,3-dihydro-1H-pyrrolizine-1-carboxamide)

CAS:167105-80-8

Aromatic or modified aromatic heterocyclic compounds withnitrogen hetero-atom(s) only nesoi

Formula:

C₁₉H₂₂N₂O₅

Color and Shape:

White Powder

Molecular weight:

358.15287

Ref: 45-1356315

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Loratadine Related Compound B (8-Chloro-11-(1-methylpiperidin-4-ylidene)-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridine)

Compounds containing an unfused pyridine ring in the structure, nesoi

Formula:

C₂₀H₂₁ClN₂

Color and Shape:

White Solid

Molecular weight:

324.13933

Ref: 45-1370291

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Prednicarbate Related Compound C (prednisolone-21-propionate)

CAS:5740-62-5

Adrenal cortical hormones and their derivatives nesoi

Formula:

C₂₄H₃₂₀₆

Color and Shape:

Powder

Molecular weight:

3519.08705

Ref: 45-1554931

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Doxepin Related Compound C ((E,Z)-3-(Dibenzo[b,e]oxepin-11(6H)-ylidene)-N-methylpropan-1-amine hydrochloride)

CAS:2887-91-4

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

Formula:

C₁₈H₁₉NO·HCl

Color and Shape:

Cream Powder

Molecular weight:

265.14666

Ref: 45-1225533

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Flurazepam Related Compound F (7-chloro-5-(2-fluorophenyl)-1,3-dihydro-2H-1,4-benzodiazepin-2-one)

CAS:2886-65-9

Aromatic or modified aromatic heterocyclic compounds withnitrogen hetero-atom(s) only nesoi

Formula:

C₁₅H₁₀ClFN₂O

Color and Shape:

White Powder

Molecular weight:

288.04657

Ref: 45-1285603

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Cefuroxime Axetil E-isomers ((1RS,6R,7R)-1-Acetoxyethyl 3-[(carbamoyloxy)methyl]-7-[(E)-2-(furan-2-yl)-2-(methoxyimino)acetamido]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate)

CAS:97232-96-7

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

Formula:

C₂₀H₂₂N₄O₁₀S

Color and Shape:

Pale Yellow Powder

Molecular weight:

510.10566

Ref: 45-1098253

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Zidovudine Related Compound B (3'-chloro-3'-deoxythymidine)

CAS:25526-94-7

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

Formula:

C₁₀H₁₃ClN₂O₄

Color and Shape:

White Off-White Powder

Molecular weight:

260.05638

Ref: 45-1724521

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Urea

CAS:57-13-6

Urea, whether or not in aqueous solution

Formula:

CH₄N₂O

Color and Shape:

White Powder Crystals

Molecular weight:

60.03236

Ref: 45-1706698

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Voriconazole Related Compound F ({(1RS,4SR)-7,7-Dimethyl-2-oxobicyclo[2.2.1]hept-1-yl}methanesulfo…

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Voriconazole Related Compound F ({(1RS,4SR)-7,7-Dimethyl-2-oxobicyclo[2.2.1]hept-1-yl}methanesulfonic acid)

CAS:5872-08-2

Ketones and quinones, w/not with other oxygen function,and their halogenated,sulfated,nitrated,or nitrosated derivatives, nesoi

Formula:

C₁₀H₁₆O₄S

Color and Shape:

White Powder

Molecular weight:

232.07693

Ref: 45-1718063

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Active pharmaceutical ingredient (API) impurities for research

Lufenuron Related Compound G (2,5-Dichloro-4-[3-(2,6-difluorobenzoyl)ureido]phenyl phenyl carbonate)

Ref: 45-1370780

Zoledronic Acid Related Compound A (2-(1H-Imidazol-1-yl)acetic acid)

Ref: 45-1724838

Bisoprolol Related Compound A (1-[4-(Hydroxymethyl)phenoxy]-3-(isopropylamino)propan-2-ol)

Ref: 45-1075768

Darifenacin Related Compound G (5-(2-Bromoethyl)-2,3-dihydrobenzofuran)

Ref: 45-1164233

Tetrahydrozoline Related Compound B (2-(1,2,3,4-Tetrahydronaphthalen-1-yl)-1H-imidazole)

Ref: 45-1652023

Ticagrelor Related Compound A ((1R,2S)-2-(3,4-difluorophenyl)cyclopropan-1-amine (R)-mandelate)

Ref: 45-1667188

Azelastine Related Compound D (4-(4-chlorobenzyl)phthalazin-1(2H)-one)

Ref: 45-1046191

Nitazoxanide Related Compound B (2-Hydroxy-N-(5-nitrothiazol-2-yl) benzamide)

Ref: 45-1463982

Fluvastatin Related Compound B ([R*,S*-E]-(+/-)-7-[3-(4-fluorophenyl)-1-methylethyl-1H-indol-2-yl]-3,5-dihydroxy-6-heptenoic acid 1,1, dimethylethyl ester)

Ref: 45-1285964

Lamotrigine Related Compound B (2,3-dichlorobenzoic acid)

Ref: 45-1356778

Dinoprostone Related Compound C ((E)-7-{(1R,2R,3R)-3-Hydroxy-2-[(S,E)-3-hydroxyoct-1-en-1-yl]-5-oxocyclopentyl}hept-5-enoic acid)

Ref: 45-1213136

Ketorolac Related Compound A (5-Benzoyl-N-(1,3-dihydroxy-2-(hydroxymethyl)propan-2-yl)-2,3-dihydro-1H-pyrrolizine-1-carboxamide)

Ref: 45-1356315

Loratadine Related Compound B (8-Chloro-11-(1-methylpiperidin-4-ylidene)-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridine)

Ref: 45-1370291

Prednicarbate Related Compound C (prednisolone-21-propionate)

Ref: 45-1554931

Doxepin Related Compound C ((E,Z)-3-(Dibenzo[b,e]oxepin-11(6H)-ylidene)-N-methylpropan-1-amine hydrochloride)

Ref: 45-1225533

Flurazepam Related Compound F (7-chloro-5-(2-fluorophenyl)-1,3-dihydro-2H-1,4-benzodiazepin-2-one)

Ref: 45-1285603

Cefuroxime Axetil E-isomers ((1RS,6R,7R)-1-Acetoxyethyl 3-[(carbamoyloxy)methyl]-7-[(E)-2-(furan-2-yl)-2-(methoxyimino)acetamido]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate)

Ref: 45-1098253

Zidovudine Related Compound B (3'-chloro-3'-deoxythymidine)

Ref: 45-1724521

Urea

Ref: 45-1706698

Voriconazole Related Compound F ({(1RS,4SR)-7,7-Dimethyl-2-oxobicyclo[2.2.1]hept-1-yl}methanesulfonic acid)

Ref: 45-1718063

Fluvastatin Related Compound B ([R,S-E]-(+/-)-7-[3-(4-fluorophenyl)-1-methylethyl-1H-indol-2-yl]-3,5-dihydroxy-6-heptenoic acid 1,1, dimethylethyl ester)