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
Azaerythromycin A (9-Deoxo-9a-aza-9a-homoerythromycin A) REF: 45-1045600CAS: 76801-85-9	- - -	1,477.00 €	Tue 15 Oct 24
Candesartan Cilexetil Related Compound A (Ethyl 1-{[2'-(1H-tetrazol-5-yl)biphenyl-4-yl]methyl}-2-ethoxybenzimidazole-7-carboxylate) REF: 45-1087814	- - -	1,477.00 €	Tue 15 Oct 24
Aniline REF: 45-1036110CAS: 62-53-3	- - -	1,371.00 €	Tue 15 Oct 24
Famotidine Related Compound B (3,5-Bis[2-[[2-[(diaminomethylene)amino]thiazol-4-yl]methylthio]ethyl]-4H-1,2,4,6-thiatriazine 1,1-dioxide) REF: 45-1269221CAS: 89268-62-2	- - -	1,477.00 €	Tue 15 Oct 24
Carprofen Related Compound A (Carbazole) REF: 45-1096702CAS: 86-74-8	- - -	1,371.00 €	Tue 15 Oct 24
Testosterone Related Compound I (17β-Hydroxyandrosta-4,6-dien-3-one) REF: 45-1646097CAS: 2484-30-2	- - -	1,390.00 €	Tue 15 Oct 24
Anagrelide Related Compound C (Ethyl 2-(5,6-dichloro-2-imino-1,2-dihydroquinazolin-3(4H)-yl)acetate) REF: 45-1034771CAS: 70381-75-8	- - -	1,477.00 €	Tue 15 Oct 24
Methimazole Related Compound C (1-Methyl-2-(methylthio)-1H-imidazole) REF: 45-1411038CAS: 14486-52-3	- - -	1,477.00 €	Tue 15 Oct 24
Ranolazine Related Compound D (2,2'-(Piperazine-1,4-diyl)bis[N-(2,6-dimethylphenyl)acetamide]) REF: 45-1598788CAS: 380204-72-8	- - -	1,552.00 €	Tue 15 Oct 24
Milnacipran Related Compound C ((1RS ,2SR)-2-[(1,3-Dioxoisoindolin-2-yl)methyl]-N,N-diethyl-1-phenylcyclopropane-1-carboxamide) REF: 45-1443680CAS: 105310-75-6	- - -	775.00 €	Tue 15 Oct 24
Praziquantel Related Compound B (2-(cyclohexylcarbonyl)-2,3,6,7-tetrahydro-4H-pyrazino [2,1-a]isoquinolin-4-one) REF: 45-1554669CAS: 125273-86-1	- - -	1,477.00 €	Tue 15 Oct 24
Zonisamide Related Compound A (1,2-benzisoxazole-3-methanesulfonic acid sodium salt) REF: 45-1725014CAS: 73101-64-1	- - -	1,441.00 €	Tue 15 Oct 24
Atenolol Related Compound F (2,2'-[{[(Isopropylazanediyl)bis(2-hydroxypropane-3,1-diyl)]bis(oxy)}bis(4,1-phenylene)]diacetamide) REF: 45-1044367CAS: 87619-83-8	- - -	1,282.00 €	Tue 15 Oct 24
Losartan Related Compound E (5-[4'-({2-Butyl-5-[(5-{4'-[(2-butyl-4-chloro-5-hydroxymethyl-1H-imidazol-1-yl)methyl]biphenyl-2-yl}-2H-tetrazol-2-yl)methyl]-4-chloro-1H-imidazol-1-yl}methyl)biphenyl-2-yl]tetrazol, potassium salt) REF: 45-1370510	- - -	1,441.00 €	Tue 15 Oct 24
Cloxacillin Related Compound D (3-(2-Chlorophenyl)-5-methylisoxazole-4-carboxylic acid) REF: 45-1144951CAS: 23598-72-3	- - -	1,477.00 €	Tue 15 Oct 24
Palonosetron Related Compound E (2-[(3S)-Quinuclidin-3-yl]-2,4,5,6-tetrahydro-1H-benzo[de]isoquinolin-1-one hydrochloride) REF: 45-1492266CAS: 135729-55-4	- - -	1,477.00 €	Tue 15 Oct 24
Furosemide Related Compound B (4-Chloro-5-sulfamoylanthranilic Acid) REF: 45-1287030CAS: 3086-91-7	- - -	1,371.00 €	Tue 15 Oct 24
Articaine Related Compound E (Methyl 3-[2-(isopropylamino)propanamido]-4-methylthiophene-2-carboxylate) REF: 45-1042962CAS: 1796888-45-3	- - -	1,441.00 €	Tue 15 Oct 24
Dexmedetomidine Related Compound C (5-[1-(2,3-Dimethylphenyl)ethyl]-1-ethyl-1H-imidazole) REF: 45-1176002CAS: 2250243-24-2	- - -	1,554.00 €	Tue 15 Oct 24
Olopatadine Related Compound B ((Z)-3-{2-(carboxymethyl)dibenzo[b,e]oxepin-11(6H)-ylidene}-N,N-dimethylpropan-1-amine oxide) REF: 45-1478425CAS: 173174-07-7	- - -	1,482.00 €	Tue 15 Oct 24

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Azaerythromycin A (9-Deoxo-9a-aza-9a-homoerythromycin A)

CAS:76801-85-9

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

Formula:

C₃₇H₇₀N₂O₁₂

Color and Shape:

White Powder

Molecular weight:

734.49288

Ref: 45-1045600

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Candesartan Cilexetil Related Compound A (Ethyl 1-{[2'-(1H-tetrazol-5-yl)biphenyl-4-yl]methyl}-2-ethoxybenzimidazole-7-carboxylate)

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

Formula:

C₂₆H₂₄N₆O₃

Color and Shape:

Powder

Molecular weight:

468.19099

Ref: 45-1087814

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Aniline

CAS:62-53-3

Aniline (aminobenzene) and its salts

Formula:

C₆H₇N

Color and Shape:

Colorless Pale Yellow Liquid

Molecular weight:

93.05785

Ref: 45-1036110

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Famotidine Related Compound B (3,5-Bis[2-[[2-[(diaminomethylene)amino]thiazol-4-yl]methylthio]ethy…

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Famotidine Related Compound B (3,5-Bis[2-[[2-[(diaminomethylene)amino]thiazol-4-yl]methylthio]ethyl]-4H-1,2,4,6-thiatriazine 1,1-dioxide)

CAS:89268-62-2

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

Formula:

C₁₆H₂₃N₁₁O₂S₅

Color and Shape:

Yellow White Powder

Molecular weight:

561.06397

Ref: 45-1269221

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Carprofen Related Compound A (Carbazole)

CAS:86-74-8

Carbazole

Formula:

C₁₂H₉N

Color and Shape:

Beige Powder

Molecular weight:

167.0735

Ref: 45-1096702

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Testosterone Related Compound I (17β-Hydroxyandrosta-4,6-dien-3-one)

CAS:2484-30-2

Adrenal cortical hormones and their derivatives nesoi

Formula:

C₁₉H₂₆O₂

Color and Shape:

Powder

Molecular weight:

286.19328

Ref: 45-1646097

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Anagrelide Related Compound C (Ethyl 2-(5,6-dichloro-2-imino-1,2-dihydroquinazolin-3(4H)-yl)acetate)

CAS:70381-75-8

Drugs containing a pyrimidine ring (whether or not hydr

Formula:

C₁₂H₁₃Cl₂N₃O₂·HBr

Color and Shape:

Light Yellow Powder

Molecular weight:

301.03848

Ref: 45-1034771

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Methimazole Related Compound C (1-Methyl-2-(methylthio)-1H-imidazole)

CAS:14486-52-3

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

Formula:

C₅H₈N₂S

Color and Shape:

Clear Pale Yellow Liquid

Molecular weight:

128.04082

Ref: 45-1411038

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Ranolazine Related Compound D (2,2'-(Piperazine-1,4-diyl)bis[N-(2,6-dimethylphenyl)acetamide])

CAS:380204-72-8

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

Formula:

C₂₄H₃₂N₄O₂

Color and Shape:

White Off-White Powder

Molecular weight:

408.25253

Ref: 45-1598788

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Milnacipran Related Compound C ((1RS ,2SR)-2-[(1,3-Dioxoisoindolin-2-yl)methyl]-N,N-diethyl-1-phen…

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Milnacipran Related Compound C ((1RS ,2SR)-2-[(1,3-Dioxoisoindolin-2-yl)methyl]-N,N-diethyl-1-phenylcyclopropane-1-carboxamide)

CAS:105310-75-6

Imides and their derivatives (excluding sacharin), salt thereof

Formula:

C₂₃H₂₄N₂O₃

Color and Shape:

Solid

Molecular weight:

376.17869

Ref: 45-1443680

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Praziquantel Related Compound B (2-(cyclohexylcarbonyl)-2,3,6,7-tetrahydro-4H-pyrazino [2,1-a]isoquinolin-4-one)

CAS:125273-86-1

Compounds containing a pyrimidine ring (whether or not

Formula:

C₁₉H₂₂N₂O₂

Color and Shape:

Pale Yellow Powder

Molecular weight:

310.16813

Ref: 45-1554669

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Zonisamide Related Compound A (1,2-benzisoxazole-3-methanesulfonic acid sodium salt)

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Zonisamide Related Compound A (1,2-benzisoxazole-3-methanesulfonic acid sodium salt)

CAS:73101-64-1

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

Formula:

C₈H₇NO₄S

Color and Shape:

Off-White White Powder

Molecular weight:

213.00958

Ref: 45-1725014

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Atenolol Related Compound F (2,2'-[{[(Isopropylazanediyl)bis(2-hydroxypropane-3,1-diyl)]bis(oxy)}bis(4,1-phenylene)]diacetamide)

CAS:87619-83-8

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

Formula:

C₂₅H₃₅N₃O₆

Color and Shape:

White Powder

Molecular weight:

473.25259

Ref: 45-1044367

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Losartan Related Compound E (5-[4'-({2-Butyl-5-[(5-{4'-[(2-butyl-4-chloro-5-hydroxymethyl-1H-imidazol-1-yl)methyl]biphenyl-2-yl}-2H-tetrazol-2-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: 45-1370510

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Cloxacillin Related Compound D (3-(2-Chlorophenyl)-5-methylisoxazole-4-carboxylic acid)

CAS:23598-72-3

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

Formula:

C₁₁H₈ClNO₃

Color and Shape:

Powder

Molecular weight:

237.01927

Ref: 45-1144951

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Palonosetron Related Compound E (2-[(3S)-Quinuclidin-3-yl]-2,4,5,6-tetrahydro-1H-benzo[de]isoquinolin-1-one hydrochloride)

CAS:135729-55-4

Lactams, nesoi

Formula:

C₁₉H₂₂N₂O·HCl

Color and Shape:

Yellow Solid

Molecular weight:

330.14989

Ref: 45-1492266

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Furosemide Related Compound B (4-Chloro-5-sulfamoylanthranilic Acid)

CAS:3086-91-7

Sulfonamides, nesoi

Formula:

C₇H₇ClN₂O₄S

Color and Shape:

White Yellow Powder

Molecular weight:

249.98151

Ref: 45-1287030

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Articaine Related Compound E (Methyl 3-[2-(isopropylamino)propanamido]-4-methylthiophene-2-carboxylate)

CAS:1796888-45-3

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

Formula:

C₁₃H₂₀N₂O₃S

Color and Shape:

White Powder

Molecular weight:

284.11946

Ref: 45-1042962

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Dexmedetomidine Related Compound C (5-[1-(2,3-Dimethylphenyl)ethyl]-1-ethyl-1H-imidazole)

CAS:2250243-24-2

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

Formula:

C₁₅H₂₀N₂

Color and Shape:

White Solid

Molecular weight:

228.16265

Ref: 45-1176002

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Olopatadine Related Compound B ((Z)-3-{2-(carboxymethyl)dibenzo[b,e]oxepin-11(6H)-ylidene}-N,N-dimethylpropan-1-amine oxide)

CAS:173174-07-7

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

Formula:

C₂₁H₂₃NO₄

Color and Shape:

White Powder

Molecular weight:

353.16271

Ref: 45-1478425

Estimated delivery in United States, on Tuesday 15 Oct 2024

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