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
Metoprolol Related Compound B ((+/-)1-Chloro-2-hydroxy-3-[4-(2-methoxyethyl)phenoxy]-propane) REF: 45-1441243CAS: 56718-76-4	- - -	1,583.00 €	Tue 15 Oct 24
Loxapine N-Oxide (4-(2-Chlorodibenzo[b,f][1,4]oxazepin-11-yl)-1-methylpiperazine 1-oxide) REF: 45-1370699CAS: 25967-34-4	- - -	1,222.00 €	Tue 15 Oct 24
Rabeprazole Related Compound C (1H-Benzimidazole-2-thiol) REF: 45-1598042CAS: 583-39-1	- - -	1,477.00 €	Tue 15 Oct 24
Sulconazole Related Compound A (1-[2-(4-Chlorobenzyl)sulfinyl-2-(2,4-dichlorophenyl)ethyl]-1H-imidazole nitrate) REF: 45-1623692CAS: 77279-29-9	- - -	1,357.00 €	Tue 15 Oct 24
Levofloxacin Related Compound A ((S)-9-fluoro-3-methyl-10-(piperazin-1-yl)-7-oxo-2,3-dihydro-7H-pyrido[1,2,3-de][1,4]benzoxazine-6-carboxylic acid) REF: 45-1362114CAS: 117707-40-1	- - -	1,477.00 €	Tue 15 Oct 24
Telmisartan Related Compound A (1,7'-dimethyl-2'-propyl-1H,3'H-2,5'-bibenzo[d]imidazole monohydrate) REF: 45-1643420CAS: 1282554-35-1	- - -	1,371.00 €	Tue 15 Oct 24
Famotidine Related Compound C (3-[[2-(Diaminomethyleneamino)thiazol-4-yl]methylthio]-N-sulfamoylpropanamide hydrochloride) REF: 45-1269232CAS: 76824-17-4	- - -	1,477.00 €	Tue 15 Oct 24
Nimodipine Related Compound A (2-methoxyethyl-1-methylethyl 2,6-dimethyl-4-(3-nitrophenyl)pyridine-3,5-dicarboxylate) REF: 45-1463870CAS: 85677-93-6	- - -	1,371.00 €	Tue 15 Oct 24
Citalopram Related Compound A (1-(3-dimethylaminopropyl)-1-(4-fluorophenyl)-1,3-dihydroisobenzofuran-5-carboxamide) REF: 45-1134244CAS: 64372-56-1	- - -	1,477.00 €	Tue 15 Oct 24
Epilactose REF: 45-1236801CAS: 50468-56-9	- - -	1,593.00 €	Tue 15 Oct 24
Desloratadine Related Compound A (8-Bromo-6,11-dihydro-11-(piperidin-4-ylidene)-5H-benzo[5,6]cyclohepta[1,2-b]pyridine) REF: 45-1173053CAS: 117796-50-6	- - -	1,477.00 €	Tue 15 Oct 24
Phenyltoloxamine Related Compound A (2-(2-benzylphenoxy)ethylmethylamine hydrochloride) REF: 45-1534413	- - -	581.00 €	Tue 15 Oct 24
Risperidone Related Compounds Mixture REF: 45-1604676	- - -	1,441.00 €	Tue 15 Oct 24
Nebivolol Related Compound A (See USP Certificate for full Chemical Name) REF: 45-1457855	- - -	1,552.00 €	Tue 15 Oct 24
Clomipramine Related Compound C (3-(3-Chloro-5H-dibenzo[b,f]azepin-5-yl)-N,N-dimethylpropan-1-amine hydrochloride, monohydrate) REF: 45-1140269	- - -	1,552.00 €	Tue 15 Oct 24
Proguanil Related Compound D (1,5-bis(1-methylethyl)biguanide hydrochloride) REF: 45-1568062CAS: 35708-82-8	- - -	775.00 €	Tue 15 Oct 24
Nebivolol Stereoisomer Mixture REF: 45-1457797	- - -	1,426.00 €	Tue 15 Oct 24
Terbinafine Related Compound C ((2E)-N,6,6-Trimethyl-N-(naphthalen-2-ylmethyl)hept-2-en-4-yn-1-amine hydrochloride) REF: 45-1353215CAS: 877265-30-0	- - -	1,371.00 €	Tue 15 Oct 24
Azelastine Related Compound B (N'-(1-methylazepan-4-yl)benzohydrazide hydrochloride) REF: 45-1046170CAS: 117078-69-0	- - -	1,371.00 €	Tue 15 Oct 24
Topotecan Related Compound C ((S)-4-Ethyl-4-hydroxy-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinoline-3,14(4H,12H)-dione) REF: 45-1672280CAS: 7689-03-4	- - -	1,292.00 €	Tue 15 Oct 24

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Metoprolol Related Compound B ((+/-)1-Chloro-2-hydroxy-3-[4-(2-methoxyethyl)phenoxy]-propane)

CAS:56718-76-4

Ether-alcohols and their halogenated, sulfonated, nitrated or nitrosated derivatives not elsewhere specified or included

Formula:

C₁₂H₁₇ClO₃

Color and Shape:

Pale Yellow Clear Liquid

Molecular weight:

244.08662

Ref: 45-1441243

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Loxapine N-Oxide (4-(2-Chlorodibenzo[b,f][1,4]oxazepin-11-yl)-1-methylpiperazine 1-oxide)

CAS:25967-34-4

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

Formula:

C₁₈H₁₈ClN₃O₂

Color and Shape:

White Off-White Pale Yellow Solid

Molecular weight:

343.10875

Ref: 45-1370699

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Rabeprazole Related Compound C (1H-Benzimidazole-2-thiol)

CAS:583-39-1

Aromatic or modified aromatic heterocyclic compounds wi

Formula:

C₇H₆N₂S

Color and Shape:

White Light Yellow Powder

Molecular weight:

150.02517

Ref: 45-1598042

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Sulconazole Related Compound A (1-[2-(4-Chlorobenzyl)sulfinyl-2-(2,4-dichlorophenyl)ethyl]-1H-imidazole nitrate)

CAS:77279-29-9

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

Formula:

C₁₈H₁₅Cl₃N₂OS·HNO₃

Color and Shape:

Powder

Molecular weight:

474.99271

Ref: 45-1623692

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Levofloxacin Related Compound A ((S)-9-fluoro-3-methyl-10-(piperazin-1-yl)-7-oxo-2,3-dihydro-7H-pyrido[1,2,3-de][1,4]benzoxazine-6-carboxylic acid)

CAS:117707-40-1

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

Formula:

C₁₇H₁₈FN₃O₄

Color and Shape:

White Powder

Molecular weight:

347.12813

Ref: 45-1362114

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Telmisartan Related Compound A (1,7'-dimethyl-2'-propyl-1H,3'H-2,5'-bibenzo[d]imidazole monohydrat…

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Telmisartan Related Compound A (1,7'-dimethyl-2'-propyl-1H,3'H-2,5'-bibenzo[d]imidazole monohydrate)

CAS:1282554-35-1

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

Formula:

C₁₉H₂₀N₄·H₂O

Color and Shape:

Off-White Solid

Molecular weight:

322.17936

Ref: 45-1643420

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Famotidine Related Compound C (3-[[2-(Diaminomethyleneamino)thiazol-4-yl]methylthio]-N-sulfamoylpropanamide hydrochloride)

CAS:76824-17-4

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

Formula:

C₈H₁₅ClN₆O₃S₃

Color and Shape:

White Off-White Powder

Molecular weight:

374.00563

Ref: 45-1269232

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Nimodipine Related Compound A (2-methoxyethyl-1-methylethyl 2,6-dimethyl-4-(3-nitrophenyl)pyridine-3,5-dicarboxylate)

CAS:85677-93-6

Compounds containing an unfused pyridine ring in the structure, nesoi

Formula:

C₂₁H₂₄N₂O₇

Color and Shape:

Liquid

Molecular weight:

416.15835

Ref: 45-1463870

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Citalopram Related Compound A (1-(3-dimethylaminopropyl)-1-(4-fluorophenyl)-1,3-dihydroisobenzofuran-5-carboxamide)

CAS:64372-56-1

Aromatic pesticides with oxygen hetero-atom(s) only ne

Formula:

C₂₀H₂₃FN₂O₂

Color and Shape:

Cream Powder

Molecular weight:

342.17436

Ref: 45-1134244

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Epilactose

CAS:50468-56-9

Sugars, chemically pure, other than sucrose, lactose, maltose, glucose and fructose; sugar ethers and sugar …

Formula:

C₁₂H₂₂O₁₁

Color and Shape:

White Crystalline Powder

Molecular weight:

342.11621

Ref: 45-1236801

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Desloratadine Related Compound A (8-Bromo-6,11-dihydro-11-(piperidin-4-ylidene)-5H-benzo[5,6]cyclohepta[1,2-b]pyridine)

CAS:117796-50-6

Compounds containing an unfused pyridine ring in the structure, nesoi

Formula:

C₁₉H₁₉BrN₂

Color and Shape:

Light Yellow Powder

Molecular weight:

354.07316

Ref: 45-1173053

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Phenyltoloxamine Related Compound A (2-(2-benzylphenoxy)ethylmethylamine hydrochloride)

Amino-naphthols and other amino-phenols, their ethers a

Ref: 45-1534413

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Risperidone Related Compounds Mixture

Diagnostic or lab reagents on a backing, prepared diagnostic or lab reagents whether or not …

Color and Shape:

White Off-White Powder

Ref: 45-1604676

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Nebivolol Related Compound A (See USP Certificate for full Chemical Name)

Aromatic pesticides with oxygen hetero

Formula:

C₂₂H₂₅F₂NO₄·HCl

Color and Shape:

Powder

Molecular weight:

441.15184

Ref: 45-1457855

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Clomipramine Related Compound C (3-(3-Chloro-5H-dibenzo[b,f]azepin-5-yl)-N,N-dimethylpropan-1-amine hydrochloride, monohydrate)

Aromatic or modified aromatic drugs with nitrogen hetero-atom(s) only, not elsewhere specified or included

Formula:

C₁₉H₂₁ClN₂·HCl

Color and Shape:

Yellow Powder

Molecular weight:

312.13933

Ref: 45-1140269

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Proguanil Related Compound D (1,5-bis(1-methylethyl)biguanide hydrochloride)

CAS:35708-82-8

Non-aromatic imines and their derivatives; salts thereo

Formula:

C₈H₁₉N₅·HCl

Color and Shape:

White Crystalline Powder

Molecular weight:

185.16405

Ref: 45-1568062

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Nebivolol Stereoisomer Mixture

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

Color and Shape:

White Powder

Ref: 45-1457797

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Terbinafine Related Compound C ((2E)-N,6,6-Trimethyl-N-(naphthalen-2-ylmethyl)hept-2-en-4-yn-1-amine hydrochloride)

CAS:877265-30-0

Aromatic monoamines and their derivatives, salts thereof, nesoi

Formula:

C₂₁H₂₅N·HCl

Color and Shape:

White Off-White Powder

Molecular weight:

327.17538

Ref: 45-1353215

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Azelastine Related Compound B (N'-(1-methylazepan-4-yl)benzohydrazide hydrochloride)

CAS:117078-69-0

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

Formula:

C₁₄H₂₁N₃O·HCl

Color and Shape:

White Powder

Molecular weight:

283.14514

Ref: 45-1046170

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Topotecan Related Compound C ((S)-4-Ethyl-4-hydroxy-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinoline…

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Topotecan Related Compound C ((S)-4-Ethyl-4-hydroxy-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinoline-3,14(4H,12H)-dione)

CAS:7689-03-4

Other alkaloids,natural or reproduced by synthesis, and their salts, ethers,esters&other derivatives, nesoi

Formula:

C₂₀H₁₆N₂O₄

Color and Shape:

Powder

Molecular weight:

348.11101

Ref: 45-1672280

Estimated delivery in United States, on Tuesday 15 Oct 2024

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