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
Pimozide N-Oxide REF: TR-P447810CAS: 1083078-88-9	- - -	315.00 €~2,039.00 €	Tue 14 Jan 25
6alpha-Naloxol REF: TR-N284495CAS: 20410-95-1	- - -	227.00 €~1,537.00 €	Tue 14 Jan 25
(S)-4,5,6,7-Tetrahydro-N2,N6-propionyl-2,6-benzothiazolediamine REF: TR-T293195CAS: 1346617-47-7	- - -	236.00 €~1,619.00 €	Tue 14 Jan 25
Diclazuril 6-Carboxylic Acid REF: TR-D436205CAS: 862243-46-7	- - -	264.00 €~1,747.00 €	Tue 14 Jan 25
Etoposide 3',4'-Quinone REF: TR-E933760CAS: 105016-65-7	- - -	316.00 €~509.00 €	Tue 14 Jan 25
4-Hydroxy Phenylbutazone REF: TR-H940060CAS: 16860-43-8	- - -	218.00 €~1,465.00 €	Tue 14 Jan 25
(R)-Desmethyl Citalopram Hydrochloride REF: TR-D291565CAS: 144010-85-5	- - -	268.00 €	Tue 14 Jan 25
11-cis-Retinoic Acid REF: TR-R245020CAS: 68070-35-9	- - -	535.00 €~4,045.00 €	Tue 14 Jan 25
3-(2-Chloroethynyl)-2,2-dimethylcyclopropanecarboxylic Acid REF: TR-C630080CAS: 63406-22-4	- - -	315.00 €~2,159.00 €	Tue 14 Jan 25
N-Nitro-1,2,3,4-tetradehydro Argatroban REF: TR-N565115CAS: 74874-10-5	- - -	413.00 €~2,866.00 €	Tue 14 Jan 25
10a-Hydroxy-(2Z)-nalfurafine REF: TR-H949390	- - -	329.00 €~5,793.00 €	Tue 14 Jan 25
Desacetyl Diltiazem-d4 REF: TR-D288682CAS: 112259-40-2	- - -	261.00 €~1,749.00 €	Tue 14 Jan 25
N-Desmethyl Toremifene Hydrochloride Salt REF: TR-D294460CAS: 176671-73-1	- - -	246.00 €~1,616.00 €	Tue 14 Jan 25
4-Amino-1-[3,5-bis-O-(4-chlorobenzoyl)-2-deoxy-a-D-erythro-pentofuranosyl]-1,3,5-triazin-2(1H)-one REF: TR-A601700CAS: 1140891-02-6	- - -	298.00 €~1,965.00 €	Tue 14 Jan 25
rac-Clopidogrel Carboxylic Acid Hydrochloride REF: TR-C587220CAS: 1015247-88-7	- - -	299.00 €~1,962.00 €	Tue 14 Jan 25
Icomethasone 21-Mesylate REF: TR-I164110CAS: 352315-75-4	- - -	373.00 €~2,491.00 €	Tue 14 Jan 25
Gentamicin B1 Acetate Salt REF: TR-G360560CAS: 36889-16-4	- - -	1,138.00 €~9,310.00 €	Tue 14 Jan 25
2-(4-(2-(4-(Carboxymethoxy)-2,3-dichlorobenzoyl)-2,5-diethyl-3,4-dihydro-2H-pyran-6-yl)-2,3-dichlorophenoxy)acetic Acid REF: TR-C178680CAS: 25355-92-4	- - -	356.00 €~2,457.00 €	Tue 14 Jan 25
N-Ethylcarbamic Acid 3-[(1S)-1-(Dimethylamino)ethyl]phenyl Ester REF: TR-E900885CAS: 1070660-34-2	- - -	329.00 €~2,144.00 €	Tue 14 Jan 25
N,N'-bis(2,6-Dimethylphenyl)-1,4-piperazinediacetamide REF: TR-D477030CAS: 380204-72-8	- - -	260.00 €~1,759.00 €	Tue 14 Jan 25

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Pimozide N-Oxide

CAS:1083078-88-9

Applications Pimozide N-Oxide is an impurity of Pimozide (P447800) with hERG inhibitory activity. Pimozide impurity …

Formula:

C₂₈H₂₉F₂N₃O₂

Color and Shape:

Off White Powder

Molecular weight:

477.54

Ref: TR-P447810

10mg		315.00 €
100mg		2,039.00 €

Estimated delivery in United States, on Tuesday 14 Jan 2025

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6alpha-Naloxol

Controlled Product

CAS:20410-95-1

Applications 6α-Naloxol is a metabolite of Naloxone (N285000), a specific opioid antagonist. Narcotic antagonist. References …

Formula:

C₁₉H₂₃NO₄

Color and Shape:

Neat

Molecular weight:

329.39

Ref: TR-N284495

1mg		227.00 €
10mg		1,537.00 €

Estimated delivery in United States, on Tuesday 14 Jan 2025

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(S)-4,5,6,7-Tetrahydro-N2,N6-propionyl-2,6-benzothiazolediamine

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(S)-4,5,6,7-Tetrahydro-N2,N6-propionyl-2,6-benzothiazolediamine

Controlled Product

CAS:1346617-47-7

Applications Pramipexole derivative.

Formula:

C₁₃H₁₉N₃O₂S

Color and Shape:

Neat

Molecular weight:

281.37

Ref: TR-T293195

10mg		236.00 €
100mg		1,619.00 €

Estimated delivery in United States, on Tuesday 14 Jan 2025

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Diclazuril 6-Carboxylic Acid

Controlled Product

CAS:862243-46-7

Applications Diclazuril 6-Carboxylic Acid is an impurity of Diclazuril (D436200), a nucleotide analog with broad-spectrum …

Formula:

C₁₈H₉Cl₃N₄O₄

Color and Shape:

Neat

Molecular weight:

451.65

Ref: TR-D436205

1mg		264.00 €
10mg		1,747.00 €

Estimated delivery in United States, on Tuesday 14 Jan 2025

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Etoposide 3',4'-Quinone

Controlled Product

CAS:105016-65-7

Applications Precursor to the semiquinone free radical of Etoposide, believed to inactivate φX174 DNA. References …

Formula:

C₂₈H₂₈O₁₃

Color and Shape:

Fluid

Molecular weight:

572.51

Ref: TR-E933760

50mg		316.00 €
100mg		509.00 €

Estimated delivery in United States, on Tuesday 14 Jan 2025

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4-Hydroxy Phenylbutazone

CAS:16860-43-8

Applications Impurity in the production of Phenylbutazone (P319570) References Fricoteaux, R., et al.: J. Pharm. …

Formula:

C₁₉H₂₀N₂O₃

Color and Shape:

White To Off-White

Molecular weight:

324.37

Ref: TR-H940060

5mg		218.00 €
25mg		665.00 €
100mg		1,465.00 €

Estimated delivery in United States, on Tuesday 14 Jan 2025

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(R)-Desmethyl Citalopram Hydrochloride

CAS:144010-85-5

Formula:

C₁₉H₁₉FN₂O·ClH

Color and Shape:

Neat

Molecular weight:

346.83

Ref: TR-D291565

1mg 268.00 €

Estimated delivery in United States, on Tuesday 14 Jan 2025

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11-cis-Retinoic Acid

Controlled Product

CAS:68070-35-9

Stability Light Sensitive, Temperature Sensitive Applications A retinoid compound with reduced toxicity than the starting …

Formula:

C₂₀H₂₈O₂

Color and Shape:

White To Yellow

Molecular weight:

300.44

Ref: TR-R245020

1mg		973.00 €
5mg		4,045.00 €
500µg		535.00 €

Estimated delivery in United States, on Tuesday 14 Jan 2025

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3-(2-Chloroethynyl)-2,2-dimethylcyclopropanecarboxylic Acid

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3-(2-Chloroethynyl)-2,2-dimethylcyclopropanecarboxylic Acid

Controlled Product

CAS:63406-22-4

Applications 3-(2-Chloroethynyl)-2,2-dimethylcyclopropanecarboxylic Acid is a useful intermediate for the preparation of pesticidal and insecticidal formulations. …

Formula:

C₈H₉ClO₂

Color and Shape:

Neat

Molecular weight:

172.61

Ref: TR-C630080

50mg		315.00 €
250mg		1,283.00 €
500mg		2,159.00 €

Estimated delivery in United States, on Tuesday 14 Jan 2025

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N-Nitro-1,2,3,4-tetradehydro Argatroban

Controlled Product

CAS:74874-10-5

Applications N-Nitro-1,2,3,4-tetradehydro Argatroban is an intermediate in the preparation of Argatroban (A769000).

Formula:

C₂₃H₃₁N₇O₇S

Color and Shape:

White To Off-White

Molecular weight:

549.60

Ref: TR-N565115

10mg		413.00 €
100mg		2,866.00 €

Estimated delivery in United States, on Tuesday 14 Jan 2025

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10a-Hydroxy-(2Z)-nalfurafine

Controlled Product

Formula:

C₂₈H₃₂N₂O₆

Color and Shape:

Neat

Molecular weight:

492.56

Ref: TR-H949390

1mg		754.00 €
10mg		5,793.00 €
250µg		329.00 €

Estimated delivery in United States, on Tuesday 14 Jan 2025

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Desacetyl Diltiazem-d4

Controlled Product

CAS:112259-40-2

Applications A labelled metabolite of Diltiazem (D460620).

Formula:

C₂₀H₂₀D₄N₂O₃S

Color and Shape:

Neat

Molecular weight:

376.51

Ref: TR-D288682

25mg		1,749.00 €
2500µg		261.00 €

Estimated delivery in United States, on Tuesday 14 Jan 2025

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N-Desmethyl Toremifene Hydrochloride Salt

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N-Desmethyl Toremifene Hydrochloride Salt

Controlled Product

CAS:176671-73-1

Applications N-Desmethyl Toremifene Hydrochloride Salt is a metabolite of Toremifene (T547500). Not a dangerous good …

Formula:

C₂₅H₂₆ClNO·HCl

Color and Shape:

Neat

Molecular weight:

428.39

Ref: TR-D294460

25mg		246.00 €
250mg		1,616.00 €

Estimated delivery in United States, on Tuesday 14 Jan 2025

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4-Amino-1-[3,5-bis-O-(4-chlorobenzoyl)-2-deoxy-a-D-erythro-pentofuranosyl]-1,3,5-triazin-2(1H)-one

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4-Amino-1-[3,5-bis-O-(4-chlorobenzoyl)-2-deoxy-a-D-erythro-pentofuranosyl]-1,3,5-triazin-2(1H)-one

Controlled Product

CAS:1140891-02-6

Formula:

C₂₂H₁₈Cl₂N₄O₆

Color and Shape:

Neat

Molecular weight:

505.308

Ref: TR-A601700

25mg		298.00 €
250mg		1,965.00 €

Estimated delivery in United States, on Tuesday 14 Jan 2025

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rac-Clopidogrel Carboxylic Acid Hydrochloride

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rac-Clopidogrel Carboxylic Acid Hydrochloride

Controlled Product

CAS:1015247-88-7

Stability Hygroscopic Applications rac-Clopidogrel Carboxylic Acid Hydrochloride is a salt metabolite of rac-Clopidogrel.

Formula:

C₁₅H₁₅Cl₂NO₂S

Color and Shape:

Neat

Molecular weight:

344.26

Ref: TR-C587220

25mg		299.00 €
250mg		1,962.00 €

Estimated delivery in United States, on Tuesday 14 Jan 2025

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Icomethasone 21-Mesylate

Controlled Product

CAS:352315-75-4

Impurity Mometasone Furoate Impurity N / Mometasone EP Impurity N Applications Icomethasone 21-Mesylate is a …

Formula:

C₂₃H₃₁ClO₇S

Color and Shape:

Off White

Molecular weight:

487.01

Ref: TR-I164110

10mg		373.00 €
100mg		2,491.00 €

Estimated delivery in United States, on Tuesday 14 Jan 2025

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Gentamicin B1 Acetate Salt

CAS:36889-16-4

Applications Gentamicin B1 Acetate Salt is the salt form of Gentamicin B1 (G360575), which is …

Formula:

C₂₀H₄₀N₄O₁₀•x(C₂H₄O₂)

Color and Shape:

Neat

Molecular weight:

496.556005

Ref: TR-G360560

5mg		9,310.00 €
500µg		1,138.00 €
2500µg		5,056.00 €

Estimated delivery in United States, on Tuesday 14 Jan 2025

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2-(4-(2-(4-(Carboxymethoxy)-2,3-dichlorobenzoyl)-2,5-diethyl-3,4-dihydro-2H-pyran-6-yl)-2,3-dichlo…

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2-(4-(2-(4-(Carboxymethoxy)-2,3-dichlorobenzoyl)-2,5-diethyl-3,4-dihydro-2H-pyran-6-yl)-2,3-dichlorophenoxy)acetic Acid

Controlled Product

CAS:25355-92-4

Stability Hygroscopic Applications 2-(4-(2-(4-(Carboxymethoxy)-2,3-dichlorobenzoyl)-2,5-diethyl-3,4-dihydro-2H-pyran-6-yl)-2,3-dichlorophenoxy)acetic Acid is an impurity of Ethacrynic Acid (E676000), a diuretic used …

Formula:

C₂₆H₂₄Cl₄O₈

Color and Shape:

Neat

Molecular weight:

606.28

Ref: TR-C178680

10mg		356.00 €
100mg		2,457.00 €

Estimated delivery in United States, on Tuesday 14 Jan 2025

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N-Ethylcarbamic Acid 3-[(1S)-1-(Dimethylamino)ethyl]phenyl Ester

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N-Ethylcarbamic Acid 3-[(1S)-1-(Dimethylamino)ethyl]phenyl Ester

Controlled Product

CAS:1070660-34-2

Formula:

C₁₃H₂₀N₂O₂

Color and Shape:

Neat

Molecular weight:

236.31

Ref: TR-E900885

50mg		329.00 €
500mg		2,144.00 €

Estimated delivery in United States, on Tuesday 14 Jan 2025

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N,N'-bis(2,6-Dimethylphenyl)-1,4-piperazinediacetamide

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N,N'-bis(2,6-Dimethylphenyl)-1,4-piperazinediacetamide

Controlled Product

CAS:380204-72-8

Impurity Ranolazine USP Related Compound D Applications N,N'-bis(2,6-Dimethylphenyl)-1,4-piperazinediacetamide is an intermediate of Ranolazine (R122500), an …

Formula:

C₂₄H₃₂N₄O₂

Color and Shape:

Neat

Molecular weight:

408.54

Ref: TR-D477030

250mg		260.00 €
2500mg		1,759.00 €

Estimated delivery in United States, on Tuesday 14 Jan 2025

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