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
Prasugrel Hydroxy Thiolactone REF: TR-P701160CAS: 947502-66-1	- - -	259.00 €~1,777.00 €	Mon 28 Oct 24
6a-Methyl Prednisolone 17-Propionate REF: TR-M328210CAS: 79512-61-1	- - -	321.00 €~2,109.00 €	Mon 28 Oct 24
3-Deazauridine REF: TR-D203240CAS: 23205-42-7	- - -	313.00 €	Mon 28 Oct 24
Progesterone Acetate REF: TR-P755910CAS: 302-23-8	- - -	91.00 €	Mon 28 Oct 24
Methotrexate Triglutamate Trifluoroacetate REF: TR-M260725CAS: 41600-14-0	- - -	236.00 €~2,345.00 €	Mon 28 Oct 24
rac N,O-Didesmethyl Venlafaxine-d3 REF: TR-D441577CAS: 1189468-67-4	- - -	325.00 €~2,132.00 €	Mon 28 Oct 24
4,4'-Dicyanobenzophenone REF: TR-D436880CAS: 32446-66-5	- - -	168.00 €~219.00 €	Mon 28 Oct 24
D,L-N,N-Didesmethyl-O-desmethyl Venlafaxine Hydrochloride REF: TR-D440970CAS: 135308-76-8	- - -	232.00 €~793.00 €	Mon 28 Oct 24
(24R)-Calcipotriene REF: TR-C144220CAS: 112827-99-3	- - -	547.00 €~3,794.00 €	Mon 28 Oct 24
5-Formyltetrahydropteroic Acid REF: TR-F701080CAS: 4349-43-3	- - -	315.00 €~2,015.00 €	Mon 28 Oct 24
Oseltamivir EP Impurity E Glucose Adduct REF: TR-O701135	- - -	253.00 €~1,029.00 €	Mon 28 Oct 24
4-des-[(3S)-Tetrahydro-3-furanyl]-2-isopropyl Empagliflozin REF: TR-A154340CAS: 946525-39-9	- - -	196.00 €~3,575.00 €	Mon 28 Oct 24
Tenofovir Alafenamide REF: TR-T018555CAS: 379270-37-8	- - -	116.00 €~567.00 €	Mon 28 Oct 24
N-[2-(2,4-Dichlorophenyl)-2-[(2,4-dichlorophenyl)methoxy]ethyl]-formamide REF: TR-D436560CAS: 911805-54-4	- - -	320.00 €~2,081.00 €	Mon 28 Oct 24
(S)-Patulin Methyl Ether REF: TR-P206510CAS: 123251-09-2	- - -	91.00 €~155.00 €	Mon 28 Oct 24
Paliperidone E-oxime REF: TR-P143000CAS: 1388021-46-2	- - -	293.00 €~1,986.00 €	Mon 28 Oct 24
1-Cyano-6-(methylsulfonyl)-7-nitro-9H-xanthen-9-one REF: TR-C981885	- - -	317.00 €~2,477.00 €	Mon 28 Oct 24
L-(+)-Ampicillin-d5 REF: TR-A634337CAS: 19379-33-0	- - -	374.00 €~2,524.00 €	Mon 28 Oct 24
N-Acetyl Sulfapyridine-d4 (Major) REF: TR-A187912CAS: 1189732-52-2	- - -	319.00 €~1,991.00 €	Mon 28 Oct 24
Acetaminophen-D₄ (major) REF: TR-A161222CAS: 64315-36-2	- - -	156.00 €~568.00 €	Mon 28 Oct 24

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Prasugrel Hydroxy Thiolactone

Controlled Product

CAS:947502-66-1

Applications Prasugrel Hydroxy Thiolactone, is the metabolite of Prasugrel (P701150), which is a novel thienopyridine. …

Formula:

C₁₈H₁₈FNO₃S

Color and Shape:

Neat

Molecular weight:

347.4

Ref: TR-P701160

1mg		259.00 €
5mg		1,056.00 €
10mg		1,777.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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6a-Methyl Prednisolone 17-Propionate

CAS:79512-61-1

Formula:

C₂₅H₃₄O₆

Color and Shape:

White To Off-White

Molecular weight:

430.53

Ref: TR-M328210

250mg		321.00 €
2500mg		2,109.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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3-Deazauridine

Controlled Product

CAS:23205-42-7

Applications Antimetabolite antiviral dosing regimen for hepatitis C virus or flaviviridae therapy. References Teh, A.-H., …

Formula:

C₁₀H₁₃NO₆

Color and Shape:

Neat

Molecular weight:

243.21

Ref: TR-D203240

100mg 313.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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Progesterone Acetate

CAS:302-23-8

Impurity Megestrol Acetate EP Impurity K Applications Progesterone Acetate (Megestrol Acetate EP Impurity K) is …

Formula:

C₂₃H₃₂O₄

Color and Shape:

Neat

Molecular weight:

372.50

Ref: TR-P755910

1g 91.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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Methotrexate Triglutamate Trifluoroacetate

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Methotrexate Triglutamate Trifluoroacetate

Controlled Product

CAS:41600-14-0

Applications Methotrexate Triglutamate is a metabolite of Methotrexate (M260675); a folic acid antagonist, antineoplastic, and …

Formula:

C₃₀H₃₆N₁₀O₁₁xC₂HF₃O₂

Color and Shape:

Neat

Molecular weight:

712.67

Ref: TR-M260725

1mg		236.00 €
5mg		685.00 €
25mg		2,345.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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rac N,O-Didesmethyl Venlafaxine-d3

Controlled Product

CAS:1189468-67-4

Applications A labelled metabolite of Venlafaxine, a selective serotonin noradrenaline reuptake inhibitor. References Klamerus, K., …

Formula:

C₁₅H₂₀D₃NO₂

Color and Shape:

Neat

Molecular weight:

252.37

Ref: TR-D441577

1mg		325.00 €
10mg		2,132.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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4,4'-Dicyanobenzophenone

CAS:32446-66-5

Applications Letrozole intermediate. References Gomez, R., et al.: J. Mat. Chem., 17, 4274 (2007),

Formula:

C₁₅H₈N₂O

Color and Shape:

Light Brown

Molecular weight:

232.24

Ref: TR-D436880

250mg		168.00 €
500mg		219.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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D,L-N,N-Didesmethyl-O-desmethyl Venlafaxine Hydrochloride

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D,L-N,N-Didesmethyl-O-desmethyl Venlafaxine Hydrochloride

CAS:135308-76-8

Applications A metabolite of Venlafaxine.

Formula:

C₁₄H₂₂ClNO₂

Color and Shape:

Neat

Molecular weight:

271.78

Ref: TR-D440970

5mg		417.00 €
10mg		793.00 €
2500µg		232.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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(24R)-Calcipotriene

Controlled Product

CAS:112827-99-3

Impurity Calcipotriol EP Impurity D Applications (24R)-Calcipotriene (Calcipotriol EP Impurity D) is a synthetic analogs …

Formula:

C₂₇H₄₀O₃

Color and Shape:

Neat

Molecular weight:

412.605

Ref: TR-C144220

5mg		3,794.00 €
500µg		547.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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5-Formyltetrahydropteroic Acid

Controlled Product

CAS:4349-43-3

Impurity Calcium Folinate Hydrate EP Impurity E Stability Unstable in Basic Solution Applications 5-Formyltetrahydropteroic Acid …

Formula:

C₁₅H₁₆N₆O₄

Color and Shape:

Light Yellow To Dark Brown

Molecular weight:

344.33

Ref: TR-F701080

25mg		2,015.00 €
2500µg		315.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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Oseltamivir EP Impurity E Glucose Adduct

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Oseltamivir EP Impurity E Glucose Adduct

Controlled Product

Applications Oseltamivir EP Impurity E Glucose Adduct is a byproduct in the synthesis of Oseltamivir …

Formula:

C₂₁H₃₆N₂O₉

Color and Shape:

Neat

Molecular weight:

460.52

Ref: TR-O701135

10mg		253.00 €
25mg		549.00 €
50mg		1,029.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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4-des-[(3S)-Tetrahydro-3-furanyl]-2-isopropyl Empagliflozin

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4-des-[(3S)-Tetrahydro-3-furanyl]-2-isopropyl Empagliflozin

Controlled Product

CAS:946525-39-9

Formula:

C₂₂H₂₇ClO₆

Color and Shape:

Neat

Molecular weight:

422.899

Ref: TR-A154340

1mg		196.00 €
5mg		856.00 €
10mg		1,478.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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Tenofovir Alafenamide

Controlled Product

CAS:379270-37-8

Stability Hygroscopic Applications Tenofovir Alafenamide is a prodrug of Tenofovir (T018500), which is a reverse …

Formula:

C₂₁H₂₉N₆O₅P

Color and Shape:

Neat

Molecular weight:

476.47

Ref: TR-T018555

5mg		116.00 €
25mg		320.00 €
100mg		567.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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N-[2-(2,4-Dichlorophenyl)-2-[(2,4-dichlorophenyl)methoxy]ethyl]-formamide

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N-[2-(2,4-Dichlorophenyl)-2-[(2,4-dichlorophenyl)methoxy]ethyl]-formamide

CAS:911805-54-4

Stability Hygroscopic Applications N-[2-(2,4-Dichlorophenyl)-2-[(2,4-dichlorophenyl)methoxy]ethyl]-formamide is an impurity of miconazole (M342500). Antifungal (topical). References Godefroi, E.F., …

Formula:

C₁₆H₁₃Cl₄NO₂

Color and Shape:

Neat

Molecular weight:

393.09

Ref: TR-D436560

5mg		320.00 €
50mg		2,081.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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(S)-Patulin Methyl Ether

CAS:123251-09-2

Applications Protected Patulin. Not a dangerous good if item is equal to or less than …

Formula:

C₈H₈O₄

Color and Shape:

Neat

Molecular weight:

168.15

Ref: TR-P206510

5mg		91.00 €
10mg		155.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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Paliperidone E-oxime

Controlled Product

CAS:1388021-46-2

Applications Paliperidone E-oxime is an impurity of Paliperidone (P141000), a known orally active antipsychotic agent. …

Formula:

C₂₃H₂₈F₂N₄O₃

Color and Shape:

Neat

Molecular weight:

446.49

Ref: TR-P143000

25mg		1,986.00 €
2500µg		293.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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1-Cyano-6-(methylsulfonyl)-7-nitro-9H-xanthen-9-one

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1-Cyano-6-(methylsulfonyl)-7-nitro-9H-xanthen-9-one

Applications 1-Cyano-6-(methylsulfonyl)-7-nitro-9H-xanthen-9-one is an impurity of Mesotrione (M225765), a herbicide that works by inhibiting 4-hydroxyphenylpyruvate …

Formula:

C₁₅H₈N₂O₆S

Color and Shape:

Neat

Molecular weight:

344.3