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
6-Hydroxy Warfarin REF: TR-H996120CAS: 17834-02-5	- - -	336.00 €~1,339.00 €	Tue 04 Feb 25
(3S)-3-Hydroxy Quinidine-vinyl-d3 REF: TR-H953232CAS: 53467-23-5	- - -	415.00 €~2,843.00 €	Tue 04 Feb 25
N-((2'-(1H-Tetrazol-5-yl)-[1,1'-biphenyl]-4-yl)methyl)pentanamide REF: TR-T283965CAS: 914465-68-2	- - -	332.00 €~663.00 €	Tue 04 Feb 25
Cyclosporin G REF: TR-C990143CAS: 74436-00-3	- - -	987.00 €~7,227.00 €	Tue 04 Feb 25
Hydroxy Ritonavir REF: TR-H953390CAS: 176655-56-4	- - -	177.00 €~2,138.00 €	Tue 04 Feb 25
Tetrabutylammonium Bromide REF: TR-T291315CAS: 1643-19-2	- - -	155.00 €~473.00 €	Tue 04 Feb 25
7-Hydroxy Quetiapine-d8 REF: TR-H953227CAS: 1185098-57-0	- - -	520.00 €~3,512.00 €	Tue 04 Feb 25
alpha-[2-(Methylamino)ethyl]benzyl Alcohol REF: TR-M286120CAS: 42142-52-9	- - -	126.00 €~251.00 €	Tue 04 Feb 25
2-Hydroxy L-Tryptophan Hydrochloride REF: TR-H975680CAS: 881025-90-7	- - -	388.00 €~2,621.00 €	Tue 04 Feb 25
10beta-Peroxy delta 4-Tibolone REF: TR-P290300CAS: 105186-34-3	- - -	398.00 €~2,745.00 €	Tue 04 Feb 25
Perphenazine Sulfoxide REF: TR-P291105CAS: 10078-25-8	- - -	347.00 €~2,203.00 €	Tue 04 Feb 25
(3’R)-Ezetimibe REF: TR-E975010CAS: 163380-16-3	- - -	449.00 €~1,459.00 €	Tue 04 Feb 25
5-Hydroxyindole-3-acetic Acid-D5 REF: TR-H953609CAS: 81587-11-3	- - -	378.00 €~2,483.00 €	Tue 04 Feb 25
Memantine Glycine REF: TR-M218015CAS: 1340545-88-1	- - -	392.00 €~2,698.00 €	Tue 04 Feb 25
4-(Methyl-d3-amino)-1-(3-pyridyl)-1-butanone Dihydrochloride REF: TR-M287002CAS: 1189727-40-9	- - -	247.00 €~1,550.00 €	Tue 04 Feb 25
GW 501516 Sulfoxide REF: TR-G931505CAS: 1206891-26-0	- - -	227.00 €~1,478.00 €	Tue 04 Feb 25
Propyl Paraben-13C6 REF: TR-P838288CAS: 2075718-26-0	- - -	345.00 €	Tue 04 Feb 25
Phenibut Hydrochloride REF: TR-P296970CAS: 3060-41-1	- - -	260.00 €~357.00 €	Tue 04 Feb 25
3’-Hydroxy Stanozolol-d3 REF: TR-H953533CAS: 170082-17-4	- - -	280.00 €~2,061.00 €	Tue 04 Feb 25
N-(3-Hydroxytricyclo[3.3.1.13,7]dec-1-yl)glycyl-L-prolinamide REF: TR-H971380CAS: 565453-39-6	- - -	225.00 €~2,073.00 €	Tue 04 Feb 25

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6-Hydroxy Warfarin

CAS:17834-02-5

Formula:

C₁₉H₁₆O₅

Color and Shape:

White

Molecular weight:

324.33

Ref: TR-H996120

5mg		336.00 €
10mg		581.00 €
25mg		1,339.00 €

Estimated delivery in United States, on Tuesday 4 Feb 2025

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(3S)-3-Hydroxy Quinidine-vinyl-d3

Controlled Product

CAS:53467-23-5

Applications The major metabolite of the Cinchona alkaloid Quinidine. References Small, D.L., et al.: J. …

Formula:

C₂₀H₂₁D₃N₂O₃

Color and Shape:

Neat

Molecular weight:

343.43

Ref: TR-H953232

1mg		415.00 €
10mg		2,843.00 €

Estimated delivery in United States, on Tuesday 4 Feb 2025

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N-((2'-(1H-Tetrazol-5-yl)-[1,1'-biphenyl]-4-yl)methyl)pentanamide

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N-((2'-(1H-Tetrazol-5-yl)-[1,1'-biphenyl]-4-yl)methyl)pentanamide

Controlled Product

CAS:914465-68-2

Formula:

C₁₉H₂₁N₅O

Color and Shape:

White

Molecular weight:

335.40

Ref: TR-T283965

10mg		332.00 €
25mg		663.00 €

Estimated delivery in United States, on Tuesday 4 Feb 2025

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Cyclosporin G

Controlled Product

CAS:74436-00-3

Formula:

C₆₃H₁₁₃N₁₁O₁₂

Color and Shape:

Neat

Molecular weight:

1216.64

Ref: TR-C990143

10mg		987.00 €
50mg		3,965.00 €
100mg		7,227.00 €

Estimated delivery in United States, on Tuesday 4 Feb 2025

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Hydroxy Ritonavir

Controlled Product

CAS:176655-56-4

Impurity Ritonavir EP Impurity E Applications Hydroxy Ritonavir (Ritonavir EP Impurity E) is a metabolite …

Formula:

C₃₇H₄₈N₆O₆S₂

Color and Shape:

Neat

Molecular weight:

736.94

Ref: TR-H953390

1mg		177.00 €
5mg		333.00 €
50mg		2,138.00 €

Estimated delivery in United States, on Tuesday 4 Feb 2025

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Tetrabutylammonium Bromide

Controlled Product

CAS:1643-19-2

Applications Tetrabutylammonium Bromide is used in the synthesis of polymer solar cells. Also used in …

Formula:

C₁₆H₃₆N·Br

Color and Shape:

White To Off-White

Molecular weight:

322.37

Ref: TR-T291315

50g		155.00 €
100g		247.00 €
250g		473.00 €

Estimated delivery in United States, on Tuesday 4 Feb 2025

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7-Hydroxy Quetiapine-d8

Controlled Product

CAS:1185098-57-0

Stability Hygroscopic Applications A metabolite of Quetiapine, a Benzothiazepine with mixed serotonin and dopamine receptor …

Formula:

C₂₁H₁₇D₈N₃O₃S

Color and Shape:

Neat

Molecular weight:

407.56

Ref: TR-H953227

1mg		520.00 €
10mg		3,512.00 €

Estimated delivery in United States, on Tuesday 4 Feb 2025

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alpha-[2-(Methylamino)ethyl]benzyl Alcohol

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alpha-[2-(Methylamino)ethyl]benzyl Alcohol

Controlled Product

CAS:42142-52-9

Impurity Fluoxetine EP Impurity A(Atomoxetine Related Compound A) Applications α-[2-(Methylamino)ethyl]benzyl Alcohol (Fluoxetine EP Impurity A(Atomoxetine …

Formula:

C₁₀H₁₅NO

Color and Shape:

Off-White To Light Yellow

Molecular weight:

165.23

Ref: TR-M286120

1g		126.00 €
5g		251.00 €

Estimated delivery in United States, on Tuesday 4 Feb 2025

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2-Hydroxy L-Tryptophan Hydrochloride

Controlled Product

CAS:881025-90-7

Applications 2-Hydroxy L-Tryptophan is a metabolic intermediate in the biosynthesis of the neurotransmitters serotonin and …

Formula:

C₁₁H₁₃ClN₂O₃

Color and Shape:

Off-White

Molecular weight:

256.69

Ref: TR-H975680

250mg		388.00 €
2500mg		2,621.00 €

Estimated delivery in United States, on Tuesday 4 Feb 2025

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10beta-Peroxy delta 4-Tibolone

Controlled Product

CAS:105186-34-3

Applications ∆4-Tibolone derivative. A potential impurity of ∆4-Tibolone (T437505). References Grunwell, J.F., et al.: Steroids, …

Formula:

C₂₁H₂₈O₄

Color and Shape:

Neat

Molecular weight:

344.44

Ref: TR-P290300

5mg		398.00 €
50mg		2,745.00 €

Estimated delivery in United States, on Tuesday 4 Feb 2025

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Perphenazine Sulfoxide

Controlled Product

CAS:10078-25-8

Impurity Perphenazine EP Impurity A Applications Perphenazine Sulfoxide (Perphenazine EP Impurity A) acts as a …

Formula:

C₂₁H₂₆ClN₃O₂S

Color and Shape:

Neat

Molecular weight:

419.97

Ref: TR-P291105

25mg		347.00 €
250mg		2,203.00 €

Estimated delivery in United States, on Tuesday 4 Feb 2025

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(3’R)-Ezetimibe

Controlled Product

CAS:163380-16-3

Applications Azetidinone Ezetimibe (E975000) analog. A cholesterol absorption inhibitor. References Hauser, H., et al.: Biochemistry, …

Formula:

C₂₄H₂₁F₂NO₃

Color and Shape:

Off-White

Molecular weight:

409.43

Ref: TR-E975010

5mg		449.00 €
10mg		835.00 €
25mg		1,459.00 €

Estimated delivery in United States, on Tuesday 4 Feb 2025

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5-Hydroxyindole-3-acetic Acid-D5

Controlled Product

CAS:81587-11-3

Applications 5-Hydroxyindole-3-acetic Acid-D5 is a labelled analogue of 5-Hydroxyindole-3-acetic Acid (H953605). 5-Hydroxyindole-3-acetic Acid is an …

Formula:

C₁₀H₅H₄NO₃

Color and Shape:

Neat

Molecular weight:

196.21

Ref: TR-H953609

25mg		2,483.00 €
2500µg		378.00 €

Estimated delivery in United States, on Tuesday 4 Feb 2025

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Memantine Glycine

Controlled Product

CAS:1340545-88-1

Stability Hygroscopic Applications An impurity of the antiparkinsonian and antispasmodic agent Memantine (M218000). References Rystov, …

Formula:

C₁₄H₂₃NO₂

Color and Shape:

Neat

Molecular weight:

237.34

Ref: TR-M218015

10mg		392.00 €
100mg		2,698.00 €

Estimated delivery in United States, on Tuesday 4 Feb 2025

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4-(Methyl-d3-amino)-1-(3-pyridyl)-1-butanone Dihydrochloride

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4-(Methyl-d3-amino)-1-(3-pyridyl)-1-butanone Dihydrochloride

Controlled Product

CAS:1189727-40-9

Applications An amino ketone metabolite of nicotine, and precursor to NNK. Not a dangerous good …

Formula:

C₁₀H₃H₁₁N₂OClH

Color and Shape:

Neat

Molecular weight:

254.17

Ref: TR-M287002

10mg		247.00 €
100mg		1,550.00 €

Estimated delivery in United States, on Tuesday 4 Feb 2025

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GW 501516 Sulfoxide

Controlled Product

CAS:1206891-26-0

Stability Light Sensitive Applications GW 501516 Sulfoxide is a urinary metabolite of GW1516, a drug …

Formula:

C₂₁H₁₈F₃NO₄S₂

Color and Shape:

Neat

Molecular weight:

469.5

Ref: TR-G931505

10mg		227.00 €
25mg		417.00 €
100mg		1,478.00 €

Estimated delivery in United States, on Tuesday 4 Feb 2025

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Propyl Paraben-13C6

CAS:2075718-26-0

Formula:

C₄₁₃C₆H₁₂O₃

Color and Shape:

Neat

Molecular weight:

186.16

Ref: TR-P838288

1mg 345.00 €

Estimated delivery in United States, on Tuesday 4 Feb 2025

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Phenibut Hydrochloride

CAS:3060-41-1

Applications Phenibut is a derivative of ╬│-Aminobutyric Acid (A602920); an important inhibitory neurotransmitter. Phenibut possesses …

Formula:

C₁₀H₁₃NO₂·ClH

Color and Shape:

Off-White

Molecular weight:

215.68

Ref: TR-P296970

1g		260.00 €
10g		357.00 €

Estimated delivery in United States, on Tuesday 4 Feb 2025

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3’-Hydroxy Stanozolol-d3

Controlled Product

CAS:170082-17-4

Applications Isotope labelled 3’-Hydroxy Stanozolol is one of the main metabolites of Stanozolol (S684500), an …

Formula:

C₂₁H₃H₂₉N₂O₂

Color and Shape:

Neat

Molecular weight:

347.51

Ref: TR-H953533

ea		304.00 €
1mg		280.00 €
10mg		2,061.00 €

Estimated delivery in United States, on Tuesday 4 Feb 2025

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N-(3-Hydroxytricyclo[3.3.1.13,7]dec-1-yl)glycyl-L-prolinamide

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N-(3-Hydroxytricyclo[3.3.1.13,7]dec-1-yl)glycyl-L-prolinamide

Controlled Product

CAS:565453-39-6

Impurity Vildagliptin Amide Impurity Applications N-(3-Hydroxytricyclo[3.3.1.13,7]dec-1-yl)glycyl-L-prolinamide is an impurity of Vildagliptin (V305000) which is an …

Formula:

C₁₇H₂₇N₃O₃

Color and Shape:

Off-White

Molecular weight:

321.41

Ref: TR-H971380

1g		2,073.00 €
50mg		225.00 €
100mg		369.00 €

Estimated delivery in United States, on Tuesday 4 Feb 2025

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