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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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BrandProduct dataPurityPrice rangeEstimated delivery
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Amifostine Thiol (Ethanethiol, 2-[(3-aminopropyl)amino]-, dihydrochloride)
REF: 45-1019428CAS: 14653-77-1 		- - -1,371.00 €Tue 15 Oct 24
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Iso-propyl p-Toluenesulfonate (Isopropyl toluene-4-sulfonate)
REF: 45-1350625CAS: 2307-69-9 		- - -844.00 €Tue 15 Oct 24
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5-Amino-2,4,6-triiodo-N-methylisophthalamic Acid
REF: 45-1027007CAS: 2280-89-9 		- - -1,292.00 €Tue 15 Oct 24
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Zaleplon Related Compound A ((E)-N-(3-[3-(dimethylamino)acryloyl]phenyl)-N-ethylacetamide)
REF: 45-1724361CAS: 1227694-96-3 		- - -1,477.00 €Tue 15 Oct 24
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Acebutolol Related Compound B (N-{3-Acetyl-4-[2-hydroxy-3-(isopropylamino)propoxy]phenyl}acetamide)
REF: 45-1000623CAS: 22568-64-5 		- - -1,029.00 €Tue 15 Oct 24
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Tiamulin Related Compound A (Tosyl pleuromutilin)
REF: 45-1667337CAS: 31716-01-5 		- - -1,570.00 €Tue 15 Oct 24
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Entecavir Related Compound A (9-[(1S,3R,4S)-4-Dimethylphenylsilyl-3-(benzyloxymethyl)-2-methylenecyclopentyl]guanine)
REF: 45-1235977CAS: 649761-24-0 		- - -1,477.00 €Tue 15 Oct 24
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Ethinyl Estradiol Related Compound A (19-Nor-17α-pregna-1,3,5(10)-trien-20-yne-3,17-diol-6-one)
REF: 45-1260012CAS: 38002-18-5 		- - -1,371.00 €Tue 15 Oct 24
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Febantel Related Compound A (Methyl [[2-[(methoxyacetyl)amino]-4-(phenylthio)phenyl]carbamimidoyl]carbamate)
REF: 45-1269367CAS: 92088-58-9 		- - -785.00 €Tue 15 Oct 24
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Azithromycin Related Compound F (3'-N-Demethyl-3'-N-formylazithromycin)
REF: 45-1046045CAS: 612069-28-0 		- - -1,477.00 €Tue 15 Oct 24
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Methyclothiazide Related Compound A (4-Amino-6-chloro-N-3-methyl-m-benzenedisulfonamide)
REF: 45-1424018		- - -815.00 €Tue 15 Oct 24
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Alprazolam Related Compound A (2-(2-acetylhydrazino)-7-chloro-5-phenyl-3H-1,4-benzodiazepine)
REF: 45-1015019CAS: 28910-89-6 		- - -1,477.00 €Tue 15 Oct 24
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Methimazole Related Compound A (2,2-Dimethoxy-N-methylethanamine)
REF: 45-1411016CAS: 122-07-6 		- - -1,477.00 €Tue 15 Oct 24
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Doxazosin Related Compound A (N-1,4-Benzodioxane-2-carbonyl piperazine hydrochloride)
REF: 45-1225420CAS: 70918-74-0 		- - -1,477.00 €Tue 15 Oct 24
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Atomoxetine Related Compound B ((R)-N-Methyl-3-phenyl-3-(3-tolyloxy)propan-1-amine hydrochloride)
REF: 45-1044488CAS: 1643684-05-2 		- - -1,477.00 €Tue 15 Oct 24
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Nebivolol Related Compound D ((RS)-6-Fluoro-2-[(SR)-oxiran-2-yl]chroman)
REF: 45-1457888CAS: 793669-26-8 		- - -1,441.00 €Tue 15 Oct 24
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Terazosin Related Compound C (1,4-Bis(4-amino-6,7-dimethoxy-2-quinazolinyl)piperazine, dihydrochloride)
REF: 45-1643485CAS: 1486464-41-8 		- - -1,371.00 €Tue 15 Oct 24
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Diphenhydramine Related Compound A (2-(Diphenylmethoxy)-N-methylethanamine hydrochloride)
REF: 45-1218016CAS: 53499-40-4 		- - -1,477.00 €Tue 15 Oct 24
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Penicillamine Disulfide (3,3'-Dithiodi-D-valine)
REF: 45-1501108CAS: 20902-45-8 		- - -1,477.00 €Tue 15 Oct 24
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Fluphenazine Related Compound A (10-{3-[4-(2-Hydroxyethyl)piperazin-1-yl]propyl}-2-(trifluoromethyl)-10H-phenothiazine 5-oxide)
REF: 45-1282015CAS: 1674-76-6 		- - -2,076.00 €Tue 15 Oct 24
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Amifostine Thiol (Ethanethiol, 2-[(3-aminopropyl)amino]-, dihydrochloride)

CAS:14653-77-1
Organo-sulfur compounds, nesoi
Formula:
C5H16N2SCl2
Color and Shape:
White Powder
Molecular weight:
206.04113

Ref: 45-1019428

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Iso-propyl p-Toluenesulfonate (Isopropyl toluene-4-sulfonate)

CAS:2307-69-9
Hydrocarbon derivatives containing only sulfo groups, their salts andesters
Formula:
C10H14O3S
Color and Shape:
Colorless Oil
Molecular weight:
214.06637

Ref: 45-1350625

Estimated delivery in United States, on Tuesday 15 Oct 2024
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5-Amino-2,4,6-triiodo-N-methylisophthalamic Acid

CAS:2280-89-9
Aromatic cyclic amides (including cyclic carbamates) and their derivatives; salts thereof
Formula:
C9H7I3N2O3
Color and Shape:
White Powder
Molecular weight:
571.75908

Ref: 45-1027007

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Zaleplon Related Compound A ((E)-N-(3-[3-(dimethylamino)acryloyl]phenyl)-N-ethylacetamide)

CAS:1227694-96-3
Aromatic cyclic amides (including cyclic carbamates) and their derivatives; salts thereof
Formula:
C15H20N2O2
Color and Shape:
Yellow Powder
Molecular weight:
260.15248

Ref: 45-1724361

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Acebutolol Related Compound B (N-{3-Acetyl-4-[2-hydroxy-3-(isopropylamino)propoxy]phenyl}acetamide)

CAS:22568-64-5
Compounds containing a pyrimidine ring (whether or not
Formula:
C16H24N2O4
Color and Shape:
Powder
Molecular weight:
308.17361

Ref: 45-1000623

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Tiamulin Related Compound A (Tosyl pleuromutilin)

CAS:31716-01-5
Antibiotics nesoi
Formula:
C29H40O7S
Color and Shape:
Powder
Molecular weight:
532.69

Ref: 45-1667337

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Entecavir Related Compound A (9-[(1S,3R,4S)-4-Dimethylphenylsilyl-3-(benzyloxymethyl)-2-methylenecyclopentyl]guanine)

CAS:649761-24-0
Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, …
Formula:
C27H31N5O2Si
Color and Shape:
White Light Yellow Powder
Molecular weight:
485.2247

Ref: 45-1235977

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Ethinyl Estradiol Related Compound A (19-Nor-17α-pregna-1,3,5(10)-trien-20-yne-3,17-diol-6-one)

CAS:38002-18-5
Estrogens and progestins
Formula:
C20H22O3
Color and Shape:
White Off-White Light Yellow Powder
Molecular weight:
310.15689

Ref: 45-1260012

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Febantel Related Compound A (Methyl [[2-[(methoxyacetyl)amino]-4-(phenylthio)phenyl]carbamimidoyl]…
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Febantel Related Compound A (Methyl [[2-[(methoxyacetyl)amino]-4-(phenylthio)phenyl]carbamimidoyl]carbamate)

CAS:92088-58-9
Other aromatic organo
Formula:
C18H20N4O4S
Color and Shape:
Solid
Molecular weight:
388.12053

Ref: 45-1269367

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Azithromycin Related Compound F (3'-N-Demethyl-3'-N-formylazithromycin)
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Azithromycin Related Compound F (3'-N-Demethyl-3'-N-formylazithromycin)

CAS:612069-28-0
Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, nesoi
Formula:
C38H70N2O13
Color and Shape:
White Powder
Molecular weight:
762.48779

Ref: 45-1046045

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Methyclothiazide Related Compound A (4-Amino-6-chloro-N-3-methyl-m-benzenedisulfonamide)

Sulfonamides, nesoi
Formula:
C7H10ClN3O4S2
Color and Shape:
Powder
Molecular weight:
298.98013

Ref: 45-1424018

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Alprazolam Related Compound A (2-(2-acetylhydrazino)-7-chloro-5-phenyl-3H-1,4-benzodiazepine)

CAS:28910-89-6
Aromatic or modified aromatic drugs with nitrogen heter
Formula:
C17H15ClN4O
Color and Shape:
White Powder
Molecular weight:
326.09344

Ref: 45-1015019

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Methimazole Related Compound A (2,2-Dimethoxy-N-methylethanamine)

CAS:122-07-6
Amino-alcohols, other than those containing more than one
Formula:
C5H13NO2
Color and Shape:
Colorless Light Yellow Liquid
Molecular weight:
119.09463

Ref: 45-1411016

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Doxazosin Related Compound A (N-1,4-Benzodioxane-2-carbonyl piperazine hydrochloride)

CAS:70918-74-0
Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, nesoi
Formula:
C13H16N2O3·HCl
Color and Shape:
White Powder
Molecular weight:
248.11609

Ref: 45-1225420

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Atomoxetine Related Compound B ((R)-N-Methyl-3-phenyl-3-(3-tolyloxy)propan-1-amine hydrochloride)

CAS:1643684-05-2
Amino-alcohols, other than those containing more than one kind of oxygen function, their ethers and …
Formula:
C17H21NO·HCl
Color and Shape:
Off-White Crystalline Solid
Molecular weight:
255.16231

Ref: 45-1044488

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Nebivolol Related Compound D ((RS)-6-Fluoro-2-[(SR)-oxiran-2-yl]chroman)
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Nebivolol Related Compound D ((RS)-6-Fluoro-2-[(SR)-oxiran-2-yl]chroman)

CAS:793669-26-8
Aromatic pesticides with oxygen hetero
Formula:
C11H11FO2
Color and Shape:
Liquid Low-Melting Solid
Molecular weight:
194.07431

Ref: 45-1457888

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Terazosin Related Compound C (1,4-Bis(4-amino-6,7-dimethoxy-2-quinazolinyl)piperazine, dihydrochloride)

CAS:1486464-41-8
Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, …
Formula:
C24H28N8O4· 2HCl
Color and Shape:
Off-White Powder
Molecular weight:
492.22335

Ref: 45-1643485

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Diphenhydramine Related Compound A (2-(Diphenylmethoxy)-N-methylethanamine hydrochloride)

CAS:53499-40-4
Amino-alcohols, other than those containing more than one kind of oxygen function, their ethers and …
Formula:
C16H19NO·HCl
Color and Shape:
White Crystalline Powder
Molecular weight:
241.14666

Ref: 45-1218016

Estimated delivery in United States, on Tuesday 15 Oct 2024
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Penicillamine Disulfide (3,3'-Dithiodi-D-valine)

CAS:20902-45-8
Thioglycolic acid and mercaptocarboxylic acids
Formula:
C10H20N2O4S2
Color and Shape:
White Powder
Molecular weight:
296.08645

Ref: 45-1501108

Estimated delivery in United States, on Tuesday 15 Oct 2024
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discount label
No image
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Fluphenazine Related Compound A (10-{3-[4-(2-Hydroxyethyl)piperazin-1-yl]propyl}-2-(trifluoromethyl)-10H-phenothiazine 5-oxide)

CAS:1674-76-6
Compounds (excluding drugs) containing a phenothiazine ring-system (whether or not hydrogenated), not further fused
Formula:
C22H26F3N3O2S
Color and Shape:
Off-White Light Orange Solid
Molecular weight:
453.16978

Ref: 45-1282015

Estimated delivery in United States, on Tuesday 15 Oct 2024
+ info
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