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
Valacyclovir Related Compound M (9-[(2-Hydroxyethoxy)methyl]guanine N-formyl-l-valinate) REF: 45-1707828CAS: 847670-62-6	- - -	1,292.00 €	Mon 30 Dec 24
Fluvastatin Related Compound B ([R,S-E]-(+/-)-7-[3-(4-fluorophenyl)-1-methylethyl-1H-indol-2-yl]-3,5-dihydroxy-6-heptenoic acid 1,1, dimethylethyl ester) REF: 45-1285964CAS: 129332-29-2	- - -	795.00 €	Mon 30 Dec 24
Lamotrigine Related Compound B (2,3-dichlorobenzoic acid) REF: 45-1356778CAS: 50-45-3	- - -	1,477.00 €	Mon 30 Dec 24
Metaxalone Related Compound B (1-amino-3-(3,5-dimethylphenoxy)propan-2-ol) REF: 45-1396168CAS: 66766-07-2	- - -	1,441.00 €	Mon 30 Dec 24
Dinoprostone Related Compound C ((E)-7-{(1R,2R,3R)-3-Hydroxy-2-[(S,E)-3-hydroxyoct-1-en-1-yl]-5-oxocyclopentyl}hept-5-enoic acid) REF: 45-1213136CAS: 36150-00-2	- - -	1,346.00 €	Mon 30 Dec 24
Ketorolac Related Compound A (5-Benzoyl-N-(1,3-dihydroxy-2-(hydroxymethyl)propan-2-yl)-2,3-dihydro-1H-pyrrolizine-1-carboxamide) REF: 45-1356315CAS: 167105-80-8	- - -	1,477.00 €	Mon 30 Dec 24
Loratadine Related Compound B (8-Chloro-11-(1-methylpiperidin-4-ylidene)-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridine) REF: 45-1370291	- - -	1,627.00 €	Mon 30 Dec 24
Prednicarbate Related Compound C (prednisolone-21-propionate) REF: 45-1554931CAS: 5740-62-5	- - -	581.00 €	Mon 30 Dec 24
Sevoflurane Related Compound A (1,1,1,3,3-Pentafluoroisopropenyl fluoromethyl ether) REF: 45-1612550CAS: 58109-34-5	- - -	1,477.00 €	Mon 30 Dec 24
Stearylpyridinium Chloride (1-Octadecylpyridinium chloride) REF: 45-1622044CAS: 3165-81-9	- - -	1,442.00 €	Mon 30 Dec 24
Sibutramine Related Compound B (N-{1-[1-(3-chlorophenyl)cyclobutyl]-3-methylbutyl}-N,N-dimethylamine hydrochloride) REF: 45-1612867	- - -	815.00 €	Mon 30 Dec 24
Doxazosin Related Compound C (2-chloro-4-amino-6,7-dimethoxyquinazoline) REF: 45-1225452CAS: 23680-84-4	- - -	1,477.00 €	Mon 30 Dec 24
Amitraz Related Compound A (N-(2,4-Dimethylphenyl)formamide) REF: 45-1028019CAS: 60397-77-5	- - -	589.00 €	Mon 30 Dec 24
Primidone Related Compound A (2-Ethyl-2-phenylmalonamide) REF: 45-1562011CAS: 7206-76-0	- - -	1,441.00 €	Mon 30 Dec 24
Propofol Related Compound B (2,6-Diisopropyl-1,4-benzoquinone) REF: 45-1572547CAS: 1988-11-0	- - -	1,371.00 €	Mon 30 Dec 24
Succinylmonocholine Chloride REF: 45-1623604CAS: 5297-17-6	- - -	1,477.00 €	Mon 30 Dec 24
Adapalene Related Compound E (2,2'-binaphthyl-6,6'-dicarboxylic acid) REF: 45-1011754CAS: 932033-58-4	- - -	1,477.00 €	Mon 30 Dec 24
Prochlorperazine Related Compound A (4-Chloro-10-[3-(4-methylpiperazin-1-yl)propyl]-10H-phenothiazine dihydrochloride) REF: 45-1566045	- - -	1,552.00 €	Mon 30 Dec 24
Dipyridamole Related Compound B (2,2',2'',2''',2'''',2'''''-{[8-(Piperidin-1-yl)pyrimido[5,4-d]pyrimidine-2,4,6-triyl]tris(azanetriyl)}hexaethanol) REF: 45-1220528CAS: 16908-47-7	- - -	1,477.00 €	Mon 30 Dec 24
Ethambutol Related Compound A ((2R,2'S)-2,2'-[ethane-1,2-diylbis(azanediyl)]dibutan-1-ol)dihydrochloride) REF: 45-1257018CAS: 32454-69-6	- - -	1,441.00 €	Mon 30 Dec 24

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Valacyclovir Related Compound M (9-[(2-Hydroxyethoxy)methyl]guanine N-formyl-l-valinate)

CAS:847670-62-6

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

Formula:

C₁₄H₂₀N₆O₅

Color and Shape:

Powder

Molecular weight:

352.14952

Ref: 45-1707828

Estimated delivery in United States, on Monday 30 Dec 2024

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Fluvastatin Related Compound B ([R,S-E]-(+/-)-7-[3-(4-fluorophenyl)-1-methylethyl-1H-indol-2-yl]-3,5-dihydroxy-6-heptenoic acid 1,1, dimethylethyl ester)

CAS:129332-29-2

Aromatic or modified aromatic drugs with nitrogen heter

Formula:

C₂₈H₃₄FNO₄

Color and Shape:

Powder

Molecular weight:

467.24719

Ref: 45-1285964

Estimated delivery in United States, on Monday 30 Dec 2024

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Lamotrigine Related Compound B (2,3-dichlorobenzoic acid)

CAS:50-45-3

Aromatic monocarboxylic acids, their anhydrides, halide

Formula:

C₇H₄Cl₂O₂

Color and Shape:

Beige Powder

Molecular weight:

189.95883

Ref: 45-1356778

Estimated delivery in United States, on Monday 30 Dec 2024

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Metaxalone Related Compound B (1-amino-3-(3,5-dimethylphenoxy)propan-2-ol)

CAS:66766-07-2

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

Formula:

C₁₁H₁₇NO₂

Color and Shape:

White Powder

Molecular weight:

195.12593

Ref: 45-1396168

Estimated delivery in United States, on Monday 30 Dec 2024

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Dinoprostone Related Compound C ((E)-7-{(1R,2R,3R)-3-Hydroxy-2-[(S,E)-3-hydroxyoct-1-en-1-yl]-5-oxocyclopentyl}hept-5-enoic acid)

CAS:36150-00-2

Prostaglandins, thromboxanes and leukotrienes, their derivatives and structural analogues

Formula:

C₂₀H₃₂O₅

Color and Shape:

Solid

Molecular weight:

352.22497

Ref: 45-1213136

Estimated delivery in United States, on Monday 30 Dec 2024

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Ketorolac Related Compound A (5-Benzoyl-N-(1,3-dihydroxy-2-(hydroxymethyl)propan-2-yl)-2,3-dihydro-1H-pyrrolizine-1-carboxamide)

CAS:167105-80-8

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

Formula:

C₁₉H₂₂N₂O₅

Color and Shape:

White Powder

Molecular weight:

358.15287

Ref: 45-1356315

Estimated delivery in United States, on Monday 30 Dec 2024

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Loratadine Related Compound B (8-Chloro-11-(1-methylpiperidin-4-ylidene)-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridine)

Compounds containing an unfused pyridine ring in the structure, nesoi

Formula:

C₂₀H₂₁ClN₂

Color and Shape:

White Crystalline Powder

Molecular weight:

324.13933

Ref: 45-1370291

Estimated delivery in United States, on Monday 30 Dec 2024

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Prednicarbate Related Compound C (prednisolone-21-propionate)

CAS:5740-62-5

Adrenal cortical hormones and their derivatives nesoi

Formula:

C₂₄H₃₂₀₆

Color and Shape:

Powder

Molecular weight:

3519.08705

Ref: 45-1554931

Estimated delivery in United States, on Monday 30 Dec 2024

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Sevoflurane Related Compound A (1,1,1,3,3-Pentafluoroisopropenyl fluoromethyl ether)

CAS:58109-34-5

Ethers of monohydric alcohols, nesoi

Formula:

C₄H₂F₆O

Color and Shape:

Colorless Clear Liquid

Molecular weight:

180.00098

Ref: 45-1612550

Estimated delivery in United States, on Monday 30 Dec 2024

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Stearylpyridinium Chloride (1-Octadecylpyridinium chloride)

CAS:3165-81-9

Compounds containing an unfused pyridine ring in the structure, nesoi

Formula:

C₂₃H₄₂ClN

Color and Shape:

White Solid

Molecular weight:

367.30058

Ref: 45-1622044

Estimated delivery in United States, on Monday 30 Dec 2024

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Sibutramine Related Compound B (N-{1-[1-(3-chlorophenyl)cyclobutyl]-3-methylbutyl}-N,N-dimethylamine hydrochloride)

Aromatic monoamines not elsewhere specified or included

Formula:

C₁₇H₂₆ClN·HCl

Color and Shape:

White Powder

Molecular weight:

316.31

Ref: 45-1612867

Estimated delivery in United States, on Monday 30 Dec 2024

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Doxazosin Related Compound C (2-chloro-4-amino-6,7-dimethoxyquinazoline)

CAS:23680-84-4

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

Formula:

C₁₀H₁₀ClN₃O₂

Color and Shape:

White Powder

Molecular weight:

239.04615

Ref: 45-1225452

Estimated delivery in United States, on Monday 30 Dec 2024

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Amitraz Related Compound A (N-(2,4-Dimethylphenyl)formamide)

CAS:60397-77-5

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

Formula:

C₉H₁₁NO

Color and Shape:

Powder

Molecular weight:

149.08406

Ref: 45-1028019

Estimated delivery in United States, on Monday 30 Dec 2024

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Primidone Related Compound A (2-Ethyl-2-phenylmalonamide)

CAS:7206-76-0

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

Formula:

C₁₁H₁₄N₂O₂

Color and Shape:

White Crystalline Powder

Molecular weight:

206.10553

Ref: 45-1562011

Estimated delivery in United States, on Monday 30 Dec 2024

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Propofol Related Compound B (2,6-Diisopropyl-1,4-benzoquinone)

CAS:1988-11-0

Other quinones

Formula:

C₁₂H₁₆O₂

Color and Shape:

Yellow Liquid

Molecular weight:

192.11503

Ref: 45-1572547

Estimated delivery in United States, on Monday 30 Dec 2024

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Succinylmonocholine Chloride

CAS:5297-17-6

Quaternary ammonium salts and hydroxides, whether or not chemically defined, nesoi

Formula:

C₉H₁₈ClNO₄

Color and Shape:

White Powder

Molecular weight:

239.09244

Ref: 45-1623604

Estimated delivery in United States, on Monday 30 Dec 2024

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Adapalene Related Compound E (2,2'-binaphthyl-6,6'-dicarboxylic acid)

CAS:932033-58-4

Unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, nesoi

Formula:

C₂₂H₁₄O₄

Color and Shape:

Powder

Molecular weight:

342.08921

Ref: 45-1011754

Estimated delivery in United States, on Monday 30 Dec 2024

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Prochlorperazine Related Compound A (4-Chloro-10-[3-(4-methylpiperazin-1-yl)propyl]-10H-phenothiazine dihydrochloride)

Compounds (excluding drugs) containing a phenothiazine ring

Formula:

C₂₀H₂₄ClN₃S· 2HCl

Color and Shape:

Light Grey Powder

Molecular weight:

373.13795

Ref: 45-1566045

Estimated delivery in United States, on Monday 30 Dec 2024

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Dipyridamole Related Compound B (2,2',2'',2''',2'''',2'''''-{[8-(Piperidin-1-yl)pyrimido[5,4-d]pyrimidine-2,4,6-triyl]tris(azanetriyl)}hexaethanol)

CAS:16908-47-7

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

Formula:

C₂₃H₄₀N₈O₆

Color and Shape:

Green Yellow Powder

Molecular weight:

524.30708

Ref: 45-1220528

Estimated delivery in United States, on Monday 30 Dec 2024

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Ethambutol Related Compound A ((2R,2'S)-2,2'-[ethane-1,2-diylbis(azanediyl)]dibutan-1-ol)dihydrochloride)

CAS:32454-69-6

Amino-alcohols, other than those containing more than o

Formula:

C₁₀H₂₄N₂O₂

Color and Shape:

White Powder

Molecular weight:

204.18378

Ref: 45-1257018

Estimated delivery in United States, on Monday 30 Dec 2024

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Active pharmaceutical ingredient (API) impurities for research

Valacyclovir Related Compound M (9-[(2-Hydroxyethoxy)methyl]guanine N-formyl-l-valinate)

Ref: 45-1707828

Fluvastatin Related Compound B ([R*,S*-E]-(+/-)-7-[3-(4-fluorophenyl)-1-methylethyl-1H-indol-2-yl]-3,5-dihydroxy-6-heptenoic acid 1,1, dimethylethyl ester)

Ref: 45-1285964

Lamotrigine Related Compound B (2,3-dichlorobenzoic acid)

Ref: 45-1356778

Metaxalone Related Compound B (1-amino-3-(3,5-dimethylphenoxy)propan-2-ol)

Ref: 45-1396168

Dinoprostone Related Compound C ((E)-7-{(1R,2R,3R)-3-Hydroxy-2-[(S,E)-3-hydroxyoct-1-en-1-yl]-5-oxocyclopentyl}hept-5-enoic acid)

Ref: 45-1213136

Ketorolac Related Compound A (5-Benzoyl-N-(1,3-dihydroxy-2-(hydroxymethyl)propan-2-yl)-2,3-dihydro-1H-pyrrolizine-1-carboxamide)

Ref: 45-1356315

Loratadine Related Compound B (8-Chloro-11-(1-methylpiperidin-4-ylidene)-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridine)

Ref: 45-1370291

Prednicarbate Related Compound C (prednisolone-21-propionate)

Ref: 45-1554931

Sevoflurane Related Compound A (1,1,1,3,3-Pentafluoroisopropenyl fluoromethyl ether)

Ref: 45-1612550

Stearylpyridinium Chloride (1-Octadecylpyridinium chloride)

Ref: 45-1622044

Sibutramine Related Compound B (N-{1-[1-(3-chlorophenyl)cyclobutyl]-3-methylbutyl}-N,N-dimethylamine hydrochloride)

Ref: 45-1612867

Doxazosin Related Compound C (2-chloro-4-amino-6,7-dimethoxyquinazoline)

Ref: 45-1225452

Amitraz Related Compound A (N-(2,4-Dimethylphenyl)formamide)

Ref: 45-1028019

Primidone Related Compound A (2-Ethyl-2-phenylmalonamide)

Ref: 45-1562011

Propofol Related Compound B (2,6-Diisopropyl-1,4-benzoquinone)

Ref: 45-1572547

Succinylmonocholine Chloride

Ref: 45-1623604

Adapalene Related Compound E (2,2'-binaphthyl-6,6'-dicarboxylic acid)

Ref: 45-1011754

Prochlorperazine Related Compound A (4-Chloro-10-[3-(4-methylpiperazin-1-yl)propyl]-10H-phenothiazine dihydrochloride)

Ref: 45-1566045

Dipyridamole Related Compound B (2,2',2'',2''',2'''',2'''''-{[8-(Piperidin-1-yl)pyrimido[5,4-d]pyrimidine-2,4,6-triyl]tris(azanetriyl)}hexaethanol)

Ref: 45-1220528

Ethambutol Related Compound A ((2R,2'S)-2,2'-[ethane-1,2-diylbis(azanediyl)]dibutan-1-ol)dihydrochloride)

Ref: 45-1257018

Fluvastatin Related Compound B ([R,S-E]-(+/-)-7-[3-(4-fluorophenyl)-1-methylethyl-1H-indol-2-yl]-3,5-dihydroxy-6-heptenoic acid 1,1, dimethylethyl ester)