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
Buspirone Related Compound N (8,8'-(Butane-1,4-diyl)bis(8-azaspiro[4.5]decane-7,9-dione) REF: 45-1078835CAS: 257877-44-4	- - -	1,477.00 €	Tue 15 Oct 24
Pancuronium Bromide Related Compound B (1,1'-(17β-Acetoxy-3α-hydroxy-5α-androstan-2β,16β-ylene) bis(1-methylpiperidinium) dibromide) REF: 45-1494239CAS: 41261-71-6	- - -	1,357.00 €	Tue 15 Oct 24
Tetrabenazine Related Compound C ((3RS,11bRS)-3-Butyl-9,10-dimethoxy-1,3,4,6,7,11b-hexahydro-2H-pyrido[2,1-a]isoquinolin-2-one) REF: 45-1649812CAS: 86457-13-8	- - -	815.00 €	Tue 15 Oct 24
Latanoprost Related Compound D (Isopropyl (Z)-7-{(1R,2R,3R,5S)-2-[(R)-5-phenyl-3-(triethylsilyloxy)pentyl]-3,5-bis(triethylsilyloxy)cyclopentyl}hept-5-enoate) REF: 45-1357522CAS: 477884-78-9	- - -	1,777.00 €	Tue 15 Oct 24
Rivastigmine Related Compound D (3-Acetylphenyl ethyl(methyl)carbamate) REF: 45-1604825CAS: 855300-09-3	- - -	1,371.00 €	Tue 15 Oct 24
Cyclophosphamide Related Compound D (3-[2-(2-chloroethylamino)ethylamino]propyl dihydrogen phosphate dihydrochloride) REF: 45-1157046CAS: 158401-51-5	- - -	1,477.00 €	Tue 15 Oct 24
Cyclobenzaprine Related Compound A (5-[3-(dimethylamino)propyl]-5H-dibenzo[a,d]-cyclohepten-5-ol) REF: 45-1154514CAS: 18029-54-4	- - -	1,477.00 €	Tue 15 Oct 24
Dalfampridine Related Compound C (1,3-Di(pyridin-4-yl)urea) REF: 45-1162567CAS: 39642-87-0	- - -	1,308.00 €	Tue 15 Oct 24
Paclitaxel Related Compound B (10-deacetyl-7-epipaclitaxel) REF: 45-1491354CAS: 78454-17-8	- - -	2,241.00 €	Tue 15 Oct 24
Saquinavir Related Compound A (N-tert-butyl-decahydro-2-[2(R)-hydroxy-4-phenyl-3(S)-[[N-(2-quinolylcarbonyl)-D-asparaginyl]amino]butyl]-(4aS,8aS)-isoquinoline-3(S)-carboxamide) REF: 45-1609831	- - -	1,357.00 €	Tue 15 Oct 24
Methyldopa Related Compound B ((S)-2-Amino-3-(4-methoxyphenyl)-2-methylpropanoic acid hydrochloride) REF: 45-1427027CAS: 35026-10-9	- - -	1,442.00 €	Tue 15 Oct 24
Cefprozil Related Compound D ((6R,7R)-7-amino-8-oxo-3-[(Z)-prop-1-enyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid) REF: 45-1097986CAS: 106447-44-3	- - -	1,371.00 €	Tue 15 Oct 24
Cidofovir Enantiomer (1-[(R)-3-Hydroxy-2-(phosphonomethoxy)propyl]cytosine dihydrate) REF: 45-1133864	- - -	589.00 €	Tue 15 Oct 24
Fentanyl Related Compound A ((2-bromoethyl)benzene) REF: 45-1269913CAS: 103-63-9	- - -	1,477.00 €	Tue 15 Oct 24
Ketamine Related Compound A (1-[(2-Chlorophenyl)(methylimino)methyl]cylcopentanol) REF: 45-1356020CAS: 6740-87-0	- - -	1,477.00 €	Tue 15 Oct 24
Efavirenz Related Compound C (6-chloro-2-cyclopropyl-4-(trifluoromethyl)quinoline) REF: 45-1234136CAS: 391860-73-4	- - -	1,390.00 €	Tue 15 Oct 24
Riluzole Related Compound A (4-(Trifluoromethoxy)aniline) REF: 45-1604348CAS: 461-82-5	- - -	1,371.00 €	Tue 15 Oct 24
Amoxicillin Related Compound G ((2S,5R,6R)-6-{(R)-2-[(R)-2-Amino-2-(4-hydroxyphenyl)acetamido]-2-(4-hydroxyphenyl)acetamido}-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid) REF: 45-1031570CAS: 188112-75-6	- - -	1,477.00 €	Tue 15 Oct 24
N-Demethylazithromycin REF: 45-1046089CAS: 172617-84-4	- - -	1,511.00 €	Tue 15 Oct 24
Desbenzyl Donepezil Hydrochloride REF: 45-1171819CAS: 120013-39-0	- - -	1,346.00 €	Tue 15 Oct 24

Buspirone Related Compound N (8,8'-(Butane-1,4-diyl)bis(8-azaspiro[4.5]decane-7,9-dione)

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Buspirone Related Compound N (8,8'-(Butane-1,4-diyl)bis(8-azaspiro[4.5]decane-7,9-dione)

CAS:257877-44-4

Compounds containing an unfused pyridine ring in the structure, nesoi

Formula:

C₂₂H₃₂N₂O₄

Color and Shape:

White Solid

Molecular weight:

388.23621

Ref: 45-1078835

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Pancuronium Bromide Related Compound B (1,1'-(17β-Acetoxy-3α-hydroxy-5α-androstan-2β,16β-ylene) bis(1-methylpiperidinium) dibromide)

CAS:41261-71-6

Compounds containing an unfused pyridine ring in the structure, nesoi

Formula:

C₃₃H₅₈N₂O₃· 2Br

Color and Shape:

Off-White Crystalline Powder

Molecular weight:

530.44474

Ref: 45-1494239

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Tetrabenazine Related Compound C ((3RS,11bRS)-3-Butyl-9,10-dimethoxy-1,3,4,6,7,11b-hexahydro-2H-pyrido[2,1-a]isoquinolin-2-one)

CAS:86457-13-8

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

Formula:

C₁₉H₂₇NO₃

Color and Shape:

Off-White Powder

Molecular weight:

317.19909

Ref: 45-1649812

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Latanoprost Related Compound D (Isopropyl (Z)-7-{(1R,2R,3R,5S)-2-[(R)-5-phenyl-3-(triethylsilyloxy)pentyl]-3,5-bis(triethylsilyloxy)cyclopentyl}hept-5-enoate)

CAS:477884-78-9

Prostaglandins, thromboxanes and leukotrienes, their derivatives and structural analogues

Formula:

C₄₄H₈₂O₅Si₃

Color and Shape:

Yellow Liquid

Molecular weight:

774.54701

Ref: 45-1357522

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Rivastigmine Related Compound D (3-Acetylphenyl ethyl(methyl)carbamate)

CAS:855300-09-3

Aromatic cyclic amides (including cyclic carbamates) an

Formula:

C₁₂H₁₅NO₃

Color and Shape:

White Powder

Molecular weight:

221.10519

Ref: 45-1604825

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Cyclophosphamide Related Compound D (3-[2-(2-chloroethylamino)ethylamino]propyl dihydrogen phosphate dihydrochloride)

CAS:158401-51-5

Other acyclic polyamines and their derivatives; salts t

Formula:

C₇H₁₈ClN₂O₄P· 2HCl

Color and Shape:

White Off-White Powder

Molecular weight:

260.06927

Ref: 45-1157046

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Cyclobenzaprine Related Compound A (5-[3-(dimethylamino)propyl]-5H-dibenzo[a,d]-cyclohepten-5-ol)

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Cyclobenzaprine Related Compound A (5-[3-(dimethylamino)propyl]-5H-dibenzo[a,d]-cyclohepten-5-ol)

CAS:18029-54-4

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

Formula:

C₂₀H₂₃NO

Color and Shape:

White Powder

Molecular weight:

293.17796

Ref: 45-1154514

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Dalfampridine Related Compound C (1,3-Di(pyridin-4-yl)urea)

CAS:39642-87-0

Compounds containing an unfused pyridine ring in the structure, nesoi

Formula:

C₁₁H₁₀N₄O

Color and Shape:

White Solid

Molecular weight:

214.08546

Ref: 45-1162567

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Paclitaxel Related Compound B (10-deacetyl-7-epipaclitaxel)

CAS:78454-17-8

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

Formula:

C₄₅H₄₉O₁₃N

Color and Shape:

White Off-White Powder

Molecular weight:

811.32039

Ref: 45-1491354

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Saquinavir Related Compound A (N-tert-butyl-decahydro-2-[2(R)-hydroxy-4-phenyl-3(S)-[[N-(2-quinolylcarbonyl)-D-asparaginyl]amino]butyl]-(4aS,8aS)-isoquinoline-3(S)-carboxamide)

Compounds (excluding drugs and pesticides) containing a quinoline or isoquinoline ring-system (whether or not hydrogenated) …

Formula:

C₃₈H₅₀N₆O₅

Color and Shape:

White Crystalline Powder

Molecular weight:

670.38427

Ref: 45-1609831

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Methyldopa Related Compound B ((S)-2-Amino-3-(4-methoxyphenyl)-2-methylpropanoic acid hydrochloride)

CAS:35026-10-9

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

Formula:

C₁₁H₁₅NO₃·HCl

Color and Shape:

Grey Powder

Molecular weight:

245.08187

Ref: 45-1427027

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Cefprozil Related Compound D ((6R,7R)-7-amino-8-oxo-3-[(Z)-prop-1-enyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid)

CAS:106447-44-3

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

Formula:

C₁₀H₁₂N₂O₃S

Color and Shape:

White Off-White Powder

Molecular weight:

240.05686

Ref: 45-1097986

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Cidofovir Enantiomer (1-[(R)-3-Hydroxy-2-(phosphonomethoxy)propyl]cytosine dihydrate)

Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, …

Formula:

C₈H₁₄N₃O₆P·2H₂O

Color and Shape:

White Off-White Powder

Molecular weight:

315.08315

Ref: 45-1133864

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Fentanyl Related Compound A ((2-bromoethyl)benzene)

CAS:103-63-9

Halogenated derivatives of aromatic hydrocarbons not el

Formula:

C₈H₉Br

Color and Shape:

Liquid

Molecular weight:

185.07 g/mol

Ref: 45-1269913

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Ketamine Related Compound A (1-[(2-Chlorophenyl)(methylimino)methyl]cylcopentanol)

CAS:6740-87-0

Aromatic imines and their derivatives, salts thereof

Formula:

C₁₃H₁₆NOCl

Color and Shape:

Off-White Powder

Molecular weight:

237.09204

Ref: 45-1356020

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Efavirenz Related Compound C (6-chloro-2-cyclopropyl-4-(trifluoromethyl)quinoline)

CAS:391860-73-4

Compounds (excluding drugs and pesticides) containing a quinoline or isoquinoline ring-system (whether or not hydrogenated) …

Formula:

C₁₃H₉ClF₃N

Color and Shape:

Off-White Powder

Molecular weight:

271.03756

Ref: 45-1234136

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Riluzole Related Compound A (4-(Trifluoromethoxy)aniline)

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Riluzole Related Compound A (4-(Trifluoromethoxy)aniline)

CAS:461-82-5

Amino-naphthols and other amino-phenols, their ethers and esters, other than those cont more than one …

Formula:

C₇H₆F₃NO

Color and Shape:

Colorless Light Yellow Liquid

Molecular weight:

177.04015

Ref: 45-1604348

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Amoxicillin Related Compound G ((2S,5R,6R)-6-{(R)-2-[(R)-2-Amino-2-(4-hydroxyphenyl)acetamido]-2-(4-hydroxyphenyl)acetamido}-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid)

CAS:188112-75-6

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

Formula:

C₂₄H₂₆N₄O₇S

Color and Shape:

White Powder

Molecular weight:

514.15222

Ref: 45-1031570

Estimated delivery in United States, on Tuesday 15 Oct 2024

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N-Demethylazithromycin

CAS:172617-84-4

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: 45-1046089

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Desbenzyl Donepezil Hydrochloride

CAS:120013-39-0

Compounds containing an unfused pyridine ring in the structure, nesoi

Formula:

C₁₇H₂₃NO₃·HCl

Color and Shape:

Yellow Off-White Powder

Molecular weight:

325.14447

Ref: 45-1171819

Estimated delivery in United States, on Tuesday 15 Oct 2024

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