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
Verapamil Related Compound F ((3,4-Dimethoxyphenyl)methanol) REF: 45-1711440CAS: 93-03-8	- - -	1,371.00 €	Tue 15 Oct 24
Doxazosin Related Compound E (2,4-dichloro-6,7-dimethoxyquinazoline) REF: 45-1225474CAS: 27631-29-4	- - -	1,477.00 €	Tue 15 Oct 24
Milnacipran Related Compound B (1-Phenyl-3-azabicyclo[3.1.0]hexan-2-one) REF: 45-1443679CAS: 153275-06-0	- - -	775.00 €	Tue 15 Oct 24
Phenytoin Related Compound B (2,2-Diphenyl-2-ureidoacetic acid) REF: 45-1535020CAS: 6802-95-5	- - -	1,477.00 €	Tue 15 Oct 24
(E)-Thiothixene REF: 45-1666006CAS: 3313-27-7	- - -	775.00 €	Tue 15 Oct 24
Clonidine Related Compound B (2-[(E)-2,6-dichlorophenylimino]-1-(1-{2-[(E)-2,6-dichlorophenylimino]-imidazolidin-1-yl}-ethyl)-imidazolidine) REF: 45-1140429	- - -	1,441.00 €	Tue 15 Oct 24
Flunixin Related Compound B (2-Methyl-3-(trifluoromethyl)aniline) REF: 45-1274630CAS: 54396-44-0	- - -	1,371.00 €	Tue 15 Oct 24
Iopamidol Related Compound A (N,N'-Bis-(1,3-dihydroxy-2-propyl)-5-amino-2,4,6-triiodoisophthalamide) REF: 45-1344724CAS: 60166-98-5	- - -	1,371.00 €	Tue 15 Oct 24
Nebivolol Related Compound C ((RS)-6-Fluoro-2-[(RS)-oxiran-2-yl]chroman) REF: 45-1457877CAS: 876514-31-7	- - -	1,552.00 €	Tue 15 Oct 24
Propafenone Related Compound A (N-{2-Hydroxy-3-[2-(3-phenylpropanoyl)phenoxy]propyl}-N-propylformamide) REF: 45-1570315	- - -	1,441.00 €	Tue 15 Oct 24
Felbamate Related Compound B (Phenethyl carbamate) REF: 45-1269334CAS: 6326-19-8	- - -	1,292.00 €	Tue 15 Oct 24
Perphenazine Sulfoxide REF: 45-1511203CAS: 10078-25-8	- - -	1,371.00 €	Tue 15 Oct 24
Levofloxacin Related Compound F ((S)-2,3-Dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-7H-pyrido[1,2,3-de][1,4]benzoxazine-6-carboxylic acid) REF: 45-1362169CAS: 117620-85-6	- - -	1,441.00 €	Tue 15 Oct 24
Drometrizole Trisiloxane Related Compound C (2-(2H-Benzotriazol-2-yl)-6-(isobuten-1-yl)-O1-[bis(trimethylsiloxy)methylsilyl]-p-cresol) REF: 45-1228042	- - -	581.00 €	Tue 15 Oct 24
Doxepin Related Compound A (dibenzo[b,e]oxepin-11(6H)-one) REF: 45-1225511CAS: 4504-87-4	- - -	1,699.00 €	Tue 15 Oct 24
Ramipril Related Compound D (Ethyl (S)-2-[(3S,5aS,8aS,9aS)-3-methyl-1,4-dioxodecahydro-2H-cyclopenta[4,5]pyrrolo[1,2-a]pyrazin-2-yl]-4-phenylbutanoate) REF: 45-1598347CAS: 108731-95-9	- - -	1,371.00 €	Tue 15 Oct 24
Cyproheptadine Related Compound C (5-(1-methyl-piperidin-4-yl)-5H-dibenzo[a,d]cyclohepten-5-ol) REF: 45-1161032CAS: 3967-32-6	- - -	1,552.00 €	Tue 15 Oct 24
Perindopril Related Compound E ((2S,3aS,7aS)-1-{(S)-2-[(S)-1-Isopropoxy-1-oxopentan-2-ylamino]propanoyl}octahydro-1H-indole-2-carboxylic acid, tert-butylamine) REF: 45-1510936	- - -	1,552.00 €	Tue 15 Oct 24
Lisinopril Related Compound A ((S)-2-{(3S,8aS)-3-(4-aminobutyl)-1,4-dioxohexahydropyrrolo[1,2-α]pyrazin-2(1H)-yl}-4-phenylbutanoic acid) REF: 45-1368610CAS: 328385-86-0	- - -	1,699.00 €	Tue 15 Oct 24
Zolmitriptan Related Compound F (2,2'-[4-(Dimethylamino)butane-1,1-diyl]bis{5-[(S)-(2-oxooxazolidin-4-yl)methyl]-3-(2-dimethylaminoethyl)indole}) REF: 45-1727075CAS: 1350928-05-0	- - -	1,477.00 €	Tue 15 Oct 24

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Verapamil Related Compound F ((3,4-Dimethoxyphenyl)methanol)

CAS:93-03-8

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

Formula:

C₉H₁₂O₃

Color and Shape:

Colorless Light Yellow Clear Liquid Viscous

Molecular weight:

168.07864

Ref: 45-1711440

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Doxazosin Related Compound E (2,4-dichloro-6,7-dimethoxyquinazoline)

CAS:27631-29-4

Compounds containing a pyrimidine ring (whether or not

Formula:

C₁₀H₈Cl₂N₂O₂

Color and Shape:

Light Orange Light Yellow Powder

Molecular weight:

257.99628

Ref: 45-1225474

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Milnacipran Related Compound B (1-Phenyl-3-azabicyclo[3.1.0]hexan-2-one)

CAS:153275-06-0

Lactams not elsewhere specified or included

Formula:

C₁₁H₁₁NO

Color and Shape:

White Off-White Solid

Molecular weight:

173.08406

Ref: 45-1443679

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Phenytoin Related Compound B (2,2-Diphenyl-2-ureidoacetic acid)

CAS:6802-95-5

Ureines and their derivatives; salts thereof

Formula:

C₁₅H₁₄N₂O₃

Color and Shape:

White Powder

Molecular weight:

270.10044

Ref: 45-1535020

Estimated delivery in United States, on Tuesday 15 Oct 2024

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(E)-Thiothixene

CAS:3313-27-7

Sulfonamides, nesoi

Formula:

C₂₃H₂₉N₃O₂S₂

Color and Shape:

White Off-White Powder

Molecular weight:

443.17012

Ref: 45-1666006

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Clonidine Related Compound B (2-[(E)-2,6-dichlorophenylimino]-1-(1-{2-[(E)-2,6-dichlorophenylimino]-imidazolidin-1-yl}-ethyl)-imidazolidine)

Compounds containing an unfused imidazole ring (whether

Formula:

C₂₀H₂₀Cl₄N₆

Color and Shape:

White Off-White Powder

Molecular weight:

486.23

Ref: 45-1140429

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Flunixin Related Compound B (2-Methyl-3-(trifluoromethyl)aniline)

CAS:54396-44-0

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

Formula:

C₈H₈F₃N

Color and Shape:

White Off-White Powder

Molecular weight:

175.06088

Ref: 45-1274630

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Iopamidol Related Compound A (N,N'-Bis-(1,3-dihydroxy-2-propyl)-5-amino-2,4,6-triiodoisophthalamide)

CAS:60166-98-5

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

Formula:

C₁₄H₁₈I₃N₃O₆

Color and Shape:

White Powder

Molecular weight:

704.83298

Ref: 45-1344724

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Nebivolol Related Compound C ((RS)-6-Fluoro-2-[(RS)-oxiran-2-yl]chroman)

CAS:876514-31-7

Aromatic pesticides with oxygen hetero

Formula:

C₁₁H₁₁FO₂

Color and Shape:

Liquid Low-Melting Solid

Molecular weight:

194.07431

Ref: 45-1457877

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Propafenone Related Compound A (N-{2-Hydroxy-3-[2-(3-phenylpropanoyl)phenoxy]propyl}-N-propylformamide)

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

Formula:

C₂₂H₂₇NO₄

Color and Shape:

White Powder

Molecular weight:

369.19401

Ref: 45-1570315

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Felbamate Related Compound B (Phenethyl carbamate)

CAS:6326-19-8

Aromatic cyclic amides (including cyclic carbamates) an

Formula:

C₉H₁₁NO₂

Color and Shape:

White Crystalline Powder

Molecular weight:

165.07898

Ref: 45-1269334

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Perphenazine Sulfoxide

CAS:10078-25-8

Compounds (excluding drugs) containing a phenothiazine ring-system (whether or not hydrogenated), not further fused

Formula:

C₂₁H₂₆ClN₃O₂S

Color and Shape:

White Crystalline Powder

Molecular weight:

419.14343

Ref: 45-1511203

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Levofloxacin Related Compound F ((S)-2,3-Dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-7H-pyrido[1,2,3-de][1,4]benzoxazine-6-carboxylic acid)

CAS:117620-85-6

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

Formula:

C₁₈H₂₁N₃O₄

Color and Shape:

Off-White Yellow Powder

Molecular weight:

343.15321

Ref: 45-1362169

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Drometrizole Trisiloxane Related Compound C (2-(2H-Benzotriazol-2-yl)-6-(isobuten-1-yl)-O1-[bis(trimethylsiloxy)methylsilyl]-p-cresol)

Aromatic or modified aromatic drugs with nitrogen heter

Formula:

C₂₄H₃₇N₃O₃Si₃

Color and Shape:

Colorless Liquid

Molecular weight:

499.83

Ref: 45-1228042

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Doxepin Related Compound A (dibenzo[b,e]oxepin-11(6H)-one)

CAS:4504-87-4

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

Formula:

C₁₄H₁₀O₂

Color and Shape:

Beige Powder

Molecular weight:

210.06808

Ref: 45-1225511

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Ramipril Related Compound D (Ethyl (S)-2-[(3S,5aS,8aS,9aS)-3-methyl-1,4-dioxodecahydro-2H-cyclopenta[4,5]pyrrolo[1,2-a]pyrazin-2-yl]-4-phenylbutanoate)

CAS:108731-95-9

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

Formula:

C₂₃H₃₀N₂O₄

Color and Shape:

White Powder

Molecular weight:

398.22056

Ref: 45-1598347

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Cyproheptadine Related Compound C (5-(1-methyl-piperidin-4-yl)-5H-dibenzo[a,d]cyclohepten-5-ol)

CAS:3967-32-6

Cyclanic, cyclenic or cycloterpenic ketones without other oxygen function not elsewhere specified or included

Formula:

C₂₁H₂₃NO

Color and Shape:

Off-White Powder

Molecular weight:

305.17796

Ref: 45-1161032

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Perindopril Related Compound E ((2S,3aS,7aS)-1-{(S)-2-[(S)-1-Isopropoxy-1-oxopentan-2-ylamino]propanoyl}octahydro-1H-indole-2-carboxylic acid, tert-butylamine)

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

Formula:

C₂₀H₃₄N₂O₅·C₄H₁₁N

Color and Shape:

White Powder

Molecular weight:

382.24677

Ref: 45-1510936

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Lisinopril Related Compound A ((S)-2-{(3S,8aS)-3-(4-aminobutyl)-1,4-dioxohexahydropyrrolo[1,2-α]pyrazin-2(1H)-yl}-4-phenylbutanoic acid)

CAS:328385-86-0

Aromatic or modified aromatic heterocyclic compounds wi

Formula:

C₂₁H₂₉N₃O₄

Color and Shape:

Yellow Off-White Crystalline Powder

Molecular weight:

387.21581

Ref: 45-1368610

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Zolmitriptan Related Compound F (2,2'-[4-(Dimethylamino)butane-1,1-diyl]bis{5-[(S)-(2-oxooxazolidin-4-yl)methyl]-3-(2-dimethylaminoethyl)indole})

CAS:1350928-05-0

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

Formula:

C₃₈H₅₃N₇O₄

Color and Shape:

Orange Powder

Molecular weight:

671.4159

Ref: 45-1727075

Estimated delivery in United States, on Tuesday 15 Oct 2024

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