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
Levalbuterol Related Compound F ((R)-1-[4-(Benzyloxy)-3-(hydroxymethyl)phenyl]-2-(tert-butylamino)ethan-1-ol) REF: 45-1358842CAS: 174607-68-2	- - -	1,552.00 €	Tue 03 Dec 24
Allopurinol Related Compound F (ethyl-(E/Z)-3-(2-carbethoxy-2-cyanoethenyl)amino-1H-pyrazole-4-carboxylate) REF: 45-1013079CAS: 321571-07-7	- - -	1,371.00 €	Tue 03 Dec 24
Atenolol Related Compound A (2-(4-Hydroxyphenyl)acetamide) REF: 45-1044254CAS: 17194-82-0	- - -	1,222.00 €	Tue 03 Dec 24
Estradiol Related Compound C (1,3,5(10)-estratrien-3,17β-diol-6-one) REF: 45-1250041CAS: 571-92-6	- - -	1,477.00 €	Tue 03 Dec 24
Acetaminophen Related Compound D (N-phenylacetamide) REF: 45-1003042CAS: 103-84-4	- - -	1,371.00 €	Tue 03 Dec 24
Perphenazine Sulfoxide REF: 45-1511203CAS: 10078-25-8	- - -	1,371.00 €	Tue 03 Dec 24
2-Mononitroglycerin REF: 45-1445584CAS: 620-12-2	- - -	1,328.00 €	Tue 03 Dec 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 03 Dec 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 03 Dec 24
Voriconazole Related Compound C (1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone) REF: 45-1718039	- - -	1,371.00 €	Tue 03 Dec 24
Doxepin Related Compound A (dibenzo[b,e]oxepin-11(6H)-one) REF: 45-1225511CAS: 4504-87-4	- - -	1,699.00 €	Tue 03 Dec 24
Allopurinol Related Compound B (5-(formylamino)-1H-pyrazole-4-carboxamide) REF: 45-1013013CAS: 22407-20-1	- - -	1,371.00 €	Tue 03 Dec 24
Urea Related Compound A (Dicarbonimidic diamide) REF: 45-1706712CAS: 108-19-0	- - -	1,308.00 €	Tue 03 Dec 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 03 Dec 24
Dacarbazine Related Compound A (5-aminoimidazole-4-carboxamide hydrochloride) REF: 45-1162320CAS: 72-40-2	- - -	1,371.00 €	Tue 03 Dec 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 03 Dec 24
Acetylcysteine Related Compound D (N,S-Diacetyl-L-Cysteine) REF: 45-1009049CAS: 18725-37-6	- - -	1,308.00 €	Tue 03 Dec 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 03 Dec 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 03 Dec 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 03 Dec 24

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Levalbuterol Related Compound F ((R)-1-[4-(Benzyloxy)-3-(hydroxymethyl)phenyl]-2-(tert-butylamino)ethan-1-ol)

CAS:174607-68-2

Aromatic amino-alcohol-phenols, aromatic amino-acid-phenols and other aromatic amino compounds with oxygen function

Formula:

C₂₀H₂₇N₀₃

Color and Shape:

White Off-White Solid

Molecular weight:

309.2205

Ref: 45-1358842

Estimated delivery in United States, on Tuesday 3 Dec 2024

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Allopurinol Related Compound F (ethyl-(E/Z)-3-(2-carbethoxy-2-cyanoethenyl)amino-1H-pyrazole-4-carboxylate)

CAS:321571-07-7

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

Formula:

C₁₂H₁₄N₄O₄

Color and Shape:

Powder

Molecular weight:

278.1015

Ref: 45-1013079

Estimated delivery in United States, on Tuesday 3 Dec 2024

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Atenolol Related Compound A (2-(4-Hydroxyphenyl)acetamide)

CAS:17194-82-0

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

Formula:

C₈H₉NO₂

Color and Shape:

Light Cream Powder

Molecular weight:

151.06333

Ref: 45-1044254

Estimated delivery in United States, on Tuesday 3 Dec 2024

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Estradiol Related Compound C (1,3,5(10)-estratrien-3,17β-diol-6-one)

CAS:571-92-6

Estrogens and progestins

Formula:

C₁₈H₂₂O₃

Color and Shape:

White Yellow Crystalline Powder

Molecular weight:

286.15689

Ref: 45-1250041

Estimated delivery in United States, on Tuesday 3 Dec 2024

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Acetaminophen Related Compound D (N-phenylacetamide)

CAS:103-84-4

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

Formula:

C₈H₉NO

Color and Shape:

White Off-White Powder

Molecular weight:

135.06841

Ref: 45-1003042

Estimated delivery in United States, on Tuesday 3 Dec 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 3 Dec 2024

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2-Mononitroglycerin

CAS:620-12-2

Esters of other inorganic acids of nonmetals & their salts, their halogenated/sulfonated/nitrated/nitrosated derivs, except of …

Formula:

C₃H₇NO₅

Color and Shape:

Clear Colorless Liquid

Molecular weight:

137.03242

Ref: 45-1445584

Estimated delivery in United States, on Tuesday 3 Dec 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 3 Dec 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 3 Dec 2024

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Voriconazole Related Compound C (1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone)

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

Formula:

C₁₀H₇F₂N₃O

Color and Shape:

Pale Yellow Solid

Molecular weight:

223.05572

Ref: 45-1718039

Estimated delivery in United States, on Tuesday 3 Dec 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 3 Dec 2024

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Allopurinol Related Compound B (5-(formylamino)-1H-pyrazole-4-carboxamide)

CAS:22407-20-1

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

Formula:

C₅H₆N₄O₂

Color and Shape:

White Powder

Molecular weight:

154.04908

Ref: 45-1013013

Estimated delivery in United States, on Tuesday 3 Dec 2024

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Urea Related Compound A (Dicarbonimidic diamide)

CAS:108-19-0

Acyclic amides (including acyclic carbamates) and their derivatives and salts thereof, nesoi

Formula:

C₂H₅N₃O₂

Color and Shape:

White Powder

Molecular weight:

103.03818

Ref: 45-1706712

Estimated delivery in United States, on Tuesday 3 Dec 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 3 Dec 2024

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Dacarbazine Related Compound A (5-aminoimidazole-4-carboxamide hydrochloride)

CAS:72-40-2

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

Formula:

C₄H₆N₄O·HCl

Color and Shape:

White Off-White Powder

Molecular weight:

126.05416

Ref: 45-1162320

Estimated delivery in United States, on Tuesday 3 Dec 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 3 Dec 2024

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Acetylcysteine Related Compound D (N,S-Diacetyl-L-Cysteine)

CAS:18725-37-6

Other organo-sulfur acid compounds

Formula:

C₇H₁₁NO₄S

Color and Shape:

White Solid

Molecular weight:

205.04088

Ref: 45-1009049

Estimated delivery in United States, on Tuesday 3 Dec 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 3 Dec 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 3 Dec 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 3 Dec 2024

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