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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
TRC logo
3’-O-(5’-Deoxy-Alpha-D-ribofuranosyl) Capecitabine
REF: TR-D251010CAS: 1262133-68-5 		- - -868.00 €~6,769.00 €Tue 28 Jan 25
TRC logo
4-Desmethoxypropoxyl-4-chloro Rabeprazole Sulfide
REF: TR-D290605CAS: 103312-62-5 		- - -443.00 €Tue 28 Jan 25
TRC logo
(R)-Cetirizine N-Oxide
REF: TR-C281115CAS: 442863-80-1 		- - -300.00 €~1,982.00 €Tue 28 Jan 25
TRC logo
(+)-N,O-Didesmethyl Tramadol
REF: TR-D441230CAS: 144830-18-2 		- - -1,528.00 €Tue 28 Jan 25
TRC logo
(4-O-(4,6-O-{[4-(2-Pyridinyl)phenyl]methylene}-Beta-D-galactopyranosyl)-Beta-D-glucopyranose)
REF: TR-P995720		- - -260.00 €~1,861.00 €Tue 28 Jan 25
TRC logo
5,7-Dichloro Hydroxychloroquine
REF: TR-D432520CAS: 2054858-98-7 		- - -252.00 €~1,705.00 €Tue 28 Jan 25
TRC logo
3,4-Dihydroxyphenylacetic Acid-d5
REF: TR-D454253CAS: 60696-39-1 		- - -188.00 €~1,242.00 €Tue 28 Jan 25
TRC logo
Lopinavir Metabolite M-3/M-4
REF: TR-L469490CAS: 357275-54-8 		- - -678.00 €Tue 28 Jan 25
TRC logo
5-(5-Chloro-1-(2-fluorophenyl)-2-oxopentyl)-4,5,6,7-tetrahydrothieno[3,2-c]pyridin-2-yl Acetate Maleate
REF: TR-C366785CAS: 1373350-61-8 		- - -300.00 €~2,018.00 €Tue 28 Jan 25
TRC logo
10a-Hydroxy-(2Z)-nalfurafine
REF: TR-H949390		- - -329.00 €~5,793.00 €Tue 28 Jan 25
TRC logo
2-(2-Methoxyphenoxy)ethylamine Hydrochloride
REF: TR-M265650CAS: 64464-07-9 		- - -94.00 €Tue 28 Jan 25
TRC logo
4-epi-Ritonavir
REF: TR-R536000CAS: 1414933-81-5 		- - -846.00 €Tue 28 Jan 25
TRC logo
Lovastatin-d9 (Mixture of Diastereomers)
REF: TR-L472228CAS: 75330-75-5 		- - -276.00 €~1,775.00 €Tue 28 Jan 25
TRC logo
(S)-2,6-Diamino-N-((S)-5-amino-6-oxo-6-(((S)-1-phenylpropan-2-yl)amino)hexyl)hexanamide Trihydrochloride Hydrate
REF: TR-D417735		- - -368.00 €~2,502.00 €Tue 28 Jan 25
TRC logo
23-Hydroxybudesonide
REF: TR-H830360CAS: 109423-03-2 		- - -143.00 €~1,048.00 €Tue 28 Jan 25
TRC logo
(S)-5-Chloro Naproxen
REF: TR-C369715CAS: 89617-86-7 		- - -320.00 €~2,118.00 €Tue 28 Jan 25
TRC logo
Losartan Isopropyl Ether
REF: TR-L470535CAS: 1332713-64-0 		- - -2,167.00 €Tue 28 Jan 25
TRC logo
3Alpha,17Alpha-Dimethylandrostane-3Beta,17Beta-diol
REF: TR-D461985CAS: 896717-01-4 		- - -488.00 €~1,530.00 €Tue 28 Jan 25
TRC logo
6b-Hydroxylevonorgestrel
REF: TR-H939820CAS: 55555-97-0 		- - -232.00 €~1,549.00 €Tue 28 Jan 25
TRC logo
N-Nitro-1,2,3,4-tetradehydro Argatroban
REF: TR-N565115CAS: 74874-10-5 		- - -413.00 €~2,866.00 €Tue 28 Jan 25
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3’-O-(5’-Deoxy-Alpha-D-ribofuranosyl) Capecitabine
TRC logo
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3’-O-(5’-Deoxy-Alpha-D-ribofuranosyl) Capecitabine

Controlled Product
CAS:1262133-68-5
Applications Capecitabine (C175650) impurity.
Formula:
C20H30FN3O9
Color and Shape:
Neat
Molecular weight:
475.47

Ref: TR-D251010

5mg6,769.00 €
500µg868.00 €
Estimated delivery in United States, on Tuesday 28 Jan 2025
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4-Desmethoxypropoxyl-4-chloro Rabeprazole Sulfide
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4-Desmethoxypropoxyl-4-chloro Rabeprazole Sulfide

Controlled Product
CAS:103312-62-5
Applications A process impurity of Rabeprazole (R070500). References Pingili, R.R., et al.: Pharmazie, 60, 814 …
Formula:
C14H12ClN3S
Color and Shape:
Neat
Molecular weight:
289.78

Ref: TR-D290605

10mg443.00 €
Estimated delivery in United States, on Tuesday 28 Jan 2025
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(R)-Cetirizine N-Oxide
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(R)-Cetirizine N-Oxide

Controlled Product
CAS:442863-80-1
Applications A metabolite of Cetirizine. References Egger, H., et al.: Drug Metab. Dispos., 10, 529 …
Formula:
C21H25ClN2O4
Color and Shape:
Neat
Molecular weight:
404.89

Ref: TR-C281115

1mg300.00 €
10mg1,982.00 €
Estimated delivery in United States, on Tuesday 28 Jan 2025
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(+)-N,O-Didesmethyl Tramadol
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(+)-N,O-Didesmethyl Tramadol

Controlled Product
CAS:144830-18-2
Applications An optically active metabolite of Tramadol. References Garrido, M., et al.: J. Pharmacol. Exp. …
Formula:
C14H21NO2
Color and Shape:
Neat
Molecular weight:
235.32

Ref: TR-D441230

5mg1,528.00 €
Estimated delivery in United States, on Tuesday 28 Jan 2025
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(4-O-(4,6-O-{[4-(2-Pyridinyl)phenyl]methylene}-Beta-D-galactopyranosyl)-Beta-D-glucopyranose)
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(4-O-(4,6-O-{[4-(2-Pyridinyl)phenyl]methylene}-Beta-D-galactopyranosyl)-Beta-D-glucopyranose)

Controlled Product
Stability Hygroscopic Applications (4-O-(4,6-O-{[4-(2-Pyridinyl)phenyl]methylene}-β-d-galactopyranosyl)-β-d-glucopyranose) is an impurity of Atazanavir (A790051), which is a novel azapeptide …
Formula:
C24H29NO11
Color and Shape:
Neat
Molecular weight:
507.487

Ref: TR-P995720

10mg260.00 €
50mg1,122.00 €
100mg1,861.00 €
Estimated delivery in United States, on Tuesday 28 Jan 2025
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5,7-Dichloro Hydroxychloroquine
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5,7-Dichloro Hydroxychloroquine

Controlled Product
CAS:2054858-98-7
Formula:
C18H25Cl2N3O
Color and Shape:
Neat
Molecular weight:
370.32

Ref: TR-D432520

10mg252.00 €
50mg979.00 €
100mg1,705.00 €
Estimated delivery in United States, on Tuesday 28 Jan 2025
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discount label
3,4-Dihydroxyphenylacetic Acid-d5
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3,4-Dihydroxyphenylacetic Acid-d5

Controlled Product
CAS:60696-39-1
Stability Hygroscopic Applications 3,4-Dihydroxyphenylacetic Acid-d5 is the labeled analogue of 3,4-Dihydroxyphenylacetic Acid (D454250), a metabolite …
Formula:
C8H3D5O4
Color and Shape:
Beige To Dark Brown
Molecular weight:
173.18

Ref: TR-D454253

10mg188.00 €
25mg401.00 €
100mg1,242.00 €
Estimated delivery in United States, on Tuesday 28 Jan 2025
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Lopinavir Metabolite M-3/M-4
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Lopinavir Metabolite M-3/M-4

Controlled Product
CAS:357275-54-8
Applications A major metabolite of Lopinavir (L469480) . It is a COVID19-related research product. References …
Formula:
C37H48N4O6
Color and Shape:
Neat
Molecular weight:
644.80

Ref: TR-L469490

1mg678.00 €
Estimated delivery in United States, on Tuesday 28 Jan 2025
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discount label
5-(5-Chloro-1-(2-fluorophenyl)-2-oxopentyl)-4,5,6,7-tetrahydrothieno[3,2-c]pyridin-2-yl Acetate Ma…
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5-(5-Chloro-1-(2-fluorophenyl)-2-oxopentyl)-4,5,6,7-tetrahydrothieno[3,2-c]pyridin-2-yl Acetate Maleate

Controlled Product
CAS:1373350-61-8
Stability Hygroscopic Applications 5-(5-Chloro-1-(2-fluorophenyl)-2-oxopentyl)-4,5,6,7-tetrahydrothieno[3,2-c]pyridin-2-yl Acetate Maleate is an impurity of Prasugrel (P701150).
Formula:
C20H21ClFNO3S·C4H4O4
Color and Shape:
Neat
Molecular weight:
525.97

Ref: TR-C366785

5mg300.00 €
50mg2,018.00 €
Estimated delivery in United States, on Tuesday 28 Jan 2025
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10a-Hydroxy-(2Z)-nalfurafine
TRC logo
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10a-Hydroxy-(2Z)-nalfurafine

Controlled Product
Formula:
C28H32N2O6
Color and Shape:
Neat
Molecular weight:
492.56

Ref: TR-H949390

1mg754.00 €
10mg5,793.00 €
250µg329.00 €
Estimated delivery in United States, on Tuesday 28 Jan 2025
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2-(2-Methoxyphenoxy)ethylamine Hydrochloride
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2-(2-Methoxyphenoxy)ethylamine Hydrochloride

CAS:64464-07-9
Impurity Carvedilol EP Impurity E; Carvedilol Impurity E; Carvedilol USP E Applications 2-(2-Methoxyphenoxy)ethylamine Hydrochloride (Carvedilol …
Formula:
C9H13NO2·ClH
Color and Shape:
Neat
Molecular weight:
203.67

Ref: TR-M265650

1g94.00 €
Estimated delivery in United States, on Tuesday 28 Jan 2025
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4-epi-Ritonavir
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4-epi-Ritonavir

Controlled Product
CAS:1414933-81-5
Impurity Ritonavir EP Impurity O Applications 4-epi-Ritonavir (Ritonavir EP Impurity O) is an isomer of …
Formula:
C37H48N6O5S2
Color and Shape:
Neat
Molecular weight:
720.94

Ref: TR-R536000

10mg846.00 €
Estimated delivery in United States, on Tuesday 28 Jan 2025
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Lovastatin-d9 (Mixture of Diastereomers)
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Lovastatin-d9 (Mixture of Diastereomers)

Controlled Product
CAS:75330-75-5
Applications Lovastatin-d9, is the labeled analogue of Lovastatin (L472225), an antihypercholesterolemic agent. A fungal metabolite, …
Formula:
C24H27D9O5
Color and Shape:
Neat
Molecular weight:
413.6

Ref: TR-L472228

1mg276.00 €
10mg1,775.00 €
Estimated delivery in United States, on Tuesday 28 Jan 2025
+ info
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(S)-2,6-Diamino-N-((S)-5-amino-6-oxo-6-(((S)-1-phenylpropan-2-yl)amino)hexyl)hexanamide Trihydroch…
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(S)-2,6-Diamino-N-((S)-5-amino-6-oxo-6-(((S)-1-phenylpropan-2-yl)amino)hexyl)hexanamide Trihydrochloride Hydrate

Controlled Product
Formula:
C21H37N5O2• 3(HCl)•x(H2O)
Color and Shape:
Neat
Molecular weight:
428.01

Ref: TR-D417735

5mg368.00 €
25mg1,476.00 €
50mg2,502.00 €
Estimated delivery in United States, on Tuesday 28 Jan 2025
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23-Hydroxybudesonide
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23-Hydroxybudesonide

Controlled Product
CAS:109423-03-2
Applications 23-Hydroxybudesonide is an metabolite of budesonide (B689490), a non-halogenated glucocorticoid related to triamcinolone hexacetonide. …
Formula:
C25H34O7
Color and Shape:
Neat
Molecular weight:
446.53

Ref: TR-H830360

10mg1,048.00 €
500µg143.00 €
2500µg317.00 €
Estimated delivery in United States, on Tuesday 28 Jan 2025
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(S)-5-Chloro Naproxen
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(S)-5-Chloro Naproxen

Controlled Product
CAS:89617-86-7
Formula:
C14H13ClO3
Color and Shape:
Neat
Molecular weight:
264.70

Ref: TR-C369715

250mg320.00 €
2500mg2,118.00 €
Estimated delivery in United States, on Tuesday 28 Jan 2025
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Losartan Isopropyl Ether
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Losartan Isopropyl Ether

Controlled Product
CAS:1332713-64-0
Impurity Losartan EP Impurity F Applications Losartan Isopropyl Ether is an impurity of Losartan (L470470); …
Formula:
C25H29ClN6O
Color and Shape:
Off-White
Molecular weight:
464.992

Ref: TR-L470535

100mg2,167.00 €
Estimated delivery in United States, on Tuesday 28 Jan 2025
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discount label
3Alpha,17Alpha-Dimethylandrostane-3Beta,17Beta-diol
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3Alpha,17Alpha-Dimethylandrostane-3Beta,17Beta-diol

Controlled Product
CAS:896717-01-4
Formula:
C21H36O2
Color and Shape:
Neat
Molecular weight:
320.51

Ref: TR-D461985

10mg488.00 €
25mg1,007.00 €
50mg1,530.00 €
Estimated delivery in United States, on Tuesday 28 Jan 2025
+ info
discount label
6b-Hydroxylevonorgestrel
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6b-Hydroxylevonorgestrel

CAS:55555-97-0
Impurity Levonorgestrel EP Impurity H Applications 6β-Hydroxylevonorgestrel (Levonorgestrel EP Impurity H) is an impurity from …
Formula:
C21H28O3
Color and Shape:
White To Light Yellow
Molecular weight:
328.45

Ref: TR-H939820

10mg232.00 €
100mg1,549.00 €
Estimated delivery in United States, on Tuesday 28 Jan 2025
+ info
discount label
N-Nitro-1,2,3,4-tetradehydro Argatroban
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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

10mg413.00 €
100mg2,866.00 €
Estimated delivery in United States, on Tuesday 28 Jan 2025
+ info
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