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
Calcifediol REF: TR-C125700CAS: 19356-17-3	- - -	121.00 €~311.00 €	Mon 28 Oct 24
Bazedoxifene N-Oxide REF: TR-B129280CAS: 1174289-22-5	- - -	190.00 €~845.00 €	Mon 28 Oct 24
rac-7-Oxo-pramipexole Dihydrochloride REF: TR-O858940CAS: 1432061-98-7	- - -	309.00 €~1,988.00 €	Mon 28 Oct 24
Dasatinib N-Oxide REF: TR-D193610CAS: 910297-52-8	- - -	368.00 €~2,494.00 €	Mon 28 Oct 24
Promethazine Sulfoxide-d6 REF: TR-P757012CAS: 1189892-93-0	- - -	414.00 €~2,846.00 €	Mon 28 Oct 24
Estetrol-d4 (Major) REF: TR-E668452CAS: 15183-37-6	- - -	366.00 €~2,528.00 €	Mon 28 Oct 24
6-Hydroxy-2-naphthalenesulfonic Acid Sodium Salt REF: TR-H950735CAS: 135-76-2	- - -	252.00 €~565.00 €	Mon 28 Oct 24
17a-Dihydro Equilin REF: TR-D449470CAS: 651-55-8	- - -	116.00 €~1,411.00 €	Mon 28 Oct 24
Anastrozole Monoamide REF: TR-A637325CAS: 120512-03-0	- - -	402.00 €~1,635.00 €	Mon 28 Oct 24
Daptomycin Impurity B1-I REF: TR-D193355	- - -	485.00 €~1,758.00 €	Mon 28 Oct 24
15-cis-Phytoene (>80%) REF: TR-P398805CAS: 13920-14-4	>80%	1,377.00 €~4,798.00 €	Mon 28 Oct 24
4-Epianhydrochlortetracycline Hydrochloride REF: TR-E578060CAS: 158018-53-2	- - -	164.00 €~516.00 €	Mon 28 Oct 24
11-Oxo Etiocholanolone REF: TR-O856650CAS: 739-27-5	- - -	159.00 €~1,287.00 €	Mon 28 Oct 24
Benazeprilat-d5 REF: TR-B119762CAS: 1279033-05-4	- - -	335.00 €~2,216.00 €	Mon 28 Oct 24
Enalaprilat Dihydrate REF: TR-E555375CAS: 84680-54-6	- - -	135.00 €~335.00 €	Mon 28 Oct 24
9-Propenyladenine REF: TR-P768800CAS: 4121-40-8	- - -	349.00 €~1,174.00 €	Mon 28 Oct 24
17b-Dihydro Equilin REF: TR-D449130CAS: 3563-27-7	- - -	293.00 €~3,197.00 €	Mon 28 Oct 24
rac-trans-4-Defluoro-4-ethoxy Paroxetine Hydrochloride REF: TR-D228985CAS: 1346597-97-4	- - -	315.00 €~1,323.00 €	Mon 28 Oct 24
2-[3-(Methylamino)-1-(2-thienyl)propyl]-1-naphthalenol Hydrochloride REF: TR-M287210CAS: 1033719-36-6	- - -	330.00 €~2,170.00 €	Mon 28 Oct 24
3-Acetamidophthalic Acid REF: TR-A161140CAS: 15371-06-9	- - -	229.00 €~1,737.00 €	Mon 28 Oct 24

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Calcifediol

Controlled Product

CAS:19356-17-3

Stability Light Sensitive, Temperature Sensitive Applications Calcifediol is a metabolite of Vitamin D. The principal …

Formula:

C₂₇H₄₄O₂

Color and Shape:

Off-White

Molecular weight:

400.64

Ref: TR-C125700

1mg		121.00 €
5mg		188.00 €
10mg		311.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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Bazedoxifene N-Oxide

Controlled Product

CAS:1174289-22-5

Applications Bazedoxifene N-Oxide is a metabolite of the selective estrogen receptor modulator, Bazedoxifene (B129250) References …

Formula:

C₃₀H₃₄N₂O₄

Color and Shape:

Neat

Molecular weight:

486.60

Ref: TR-B129280

1mg		190.00 €
5mg		357.00 €
10mg		845.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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rac-7-Oxo-pramipexole Dihydrochloride

Controlled Product

CAS:1432061-98-7

Stability Hygroscopic Applications An impurity of Pramipexole production. References Jancic, B., et al.: Acta Chim. …

Formula:

C₁₀H₁₇Cl₂N₃OS

Color and Shape:

Neat

Molecular weight:

225.31 + 2(36.46)

Ref: TR-O858940

1mg		309.00 €
10mg		1,988.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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Dasatinib N-Oxide

CAS:910297-52-8

Applications An oxidative metabolite of Dasatinib (M5 metabolite). It is a COVID19-related research product. References …

Formula:

C₂₂H₂₆ClN₇O₃S

Color and Shape:

Neat

Molecular weight:

504.00

Ref: TR-D193610

5mg		368.00 €
50mg		2,494.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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Promethazine Sulfoxide-d6

Controlled Product

CAS:1189892-93-0

Applications A labelled metabolite of Promethazine. References Gottschalk, L., et al.: J. Pharm. Sci., 67, …

Formula:

C₁₇H₁₄D₆N₂OS

Color and Shape:

Off White Solid

Molecular weight:

306.46

Ref: TR-P757012

1mg		414.00 €
10mg		2,846.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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Estetrol-d4 (Major)

Controlled Product

CAS:15183-37-6

Applications A labelled metabolite of Estradiol. It is an estrogenic steroid synthesized exclusively by the …

Formula:

C₁₈H₂₀D₄O₄

Color and Shape:

White To Off-White

Molecular weight:

308.41

Ref: TR-E668452

1mg		366.00 €
10mg		2,528.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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6-Hydroxy-2-naphthalenesulfonic Acid Sodium Salt

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6-Hydroxy-2-naphthalenesulfonic Acid Sodium Salt

Controlled Product

CAS:135-76-2

Applications 6-Hydroxy-2-naphthalenesulfonic Acid Sodium Salt is a coupling component used to prepare heterocyclic monoazo dyes. …

Formula:

C₁₀H₇O₄S·Na

Color and Shape:

White To Off-White

Molecular weight:

246.22

Ref: TR-H950735

5g		252.00 €
25g		346.00 €
100g		565.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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17a-Dihydro Equilin

Controlled Product

CAS:651-55-8

Applications A metabolite of Equilin (E592800). References Enmark, E., et al.: J. Clin. Endocrinol. Metab., …

Formula:

C₁₈H₂₂O₂

Color and Shape:

Neat

Molecular weight:

270.37

Ref: TR-D449470

1mg		116.00 €
5mg		362.00 €
25mg		1,411.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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Anastrozole Monoamide

CAS:120512-03-0

Impurity Anastrozole Monoamide Impurity Applications Anastrozole Monoamide is a derivative of Anastrozole (A637425), an aromatase …

Formula:

C₁₇H₂₁N₅O

Color and Shape:

White

Molecular weight:

311.38

Ref: TR-A637325

25mg		402.00 €
50mg		754.00 €
100mg		1,635.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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Daptomycin Impurity B1-I

Applications Daptomycin Impurity B1-1 is an impurity of Daptomycin (D193350), cyclic lipopeptide antibiotic derived from …

Formula:

C₄₄H₆₆N₁₀O₁₅•(C₂HF₃O₂)

Color and Shape:

Off White Solid

Molecular weight:

975.0511402

Ref: TR-D193355

10mg		485.00 €
25mg		1,022.00 €
50mg		1,758.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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15-cis-Phytoene (>80%)

Controlled Product

CAS:13920-14-4

Stability Light Sensitive, Temperature Sensitive Applications 15-cis-Phytoene is an intermediate in the biosynthesis of carotenoids. …

Formula:

C₄₀H₆₄

Purity:

>80%

Color and Shape:

Colourless To Light Yellow

Molecular weight:

544.94

Ref: TR-P398805

1mg		1,377.00 €
5mg		4,798.00 €
2500µg		2,710.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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4-Epianhydrochlortetracycline Hydrochloride

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4-Epianhydrochlortetracycline Hydrochloride

Controlled Product

CAS:158018-53-2

Applications Modified Tetracycline analog References Paemen, L., et al.: Biochem. Pharmacol., 52, 105 (1996),

Formula:

C₂₂H₂₁ClN₂O₇·ClH

Color and Shape:

Neat

Molecular weight:

497.33

Ref: TR-E578060

1mg		164.00 €
5mg		516.00 €
2500µg		274.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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11-Oxo Etiocholanolone

CAS:739-27-5

Applications A metabolite of Etiocholanolone. References Eriksson, H., et al.: Eur. J. Biochem., 15, 132 …

Formula:

C₁₉H₂₈O₃

Color and Shape:

White To Off-White

Molecular weight:

304.42

Ref: TR-O856650

1mg		159.00 €
5mg		310.00 €
25mg		1,287.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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Benazeprilat-d5

Controlled Product

CAS:1279033-05-4

Formula:

C₂₂H₁₉D₅N₂O₅

Color and Shape:

Neat

Molecular weight:

401.47

Ref: TR-B119762

1mg		335.00 €
10mg		2,216.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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Enalaprilat Dihydrate

Controlled Product

CAS:84680-54-6

Formula:

C₁₈H₂₄N₂O₅H₂O

Color and Shape:

Neat

Molecular weight:

384.42

Ref: TR-E555375

5mg		135.00 €
25mg		183.00 €
100mg		335.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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9-Propenyladenine

CAS:4121-40-8

Impurity Tenofovir Disoproxil USP Related Compound B Applications 9-Propenyladenine (Tenofovir Disoproxil USP Related Compound B) …

Formula:

C₈H₉N₅

Color and Shape:

White To Light Yellow

Molecular weight:

175.19

Ref: TR-P768800

25mg		349.00 €
50mg		612.00 €
100mg		1,174.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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17b-Dihydro Equilin

CAS:3563-27-7

Applications A metabolite of Equilin (E592800). References Enmark, E., et al.: J. Clin. Endocrinol. Metab., …

Formula:

C₁₈H₂₂O₂

Color and Shape:

Neat

Molecular weight:

270.37

Ref: TR-D449130

1mg		293.00 €
5mg		1,023.00 €
25mg		3,197.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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rac-trans-4-Defluoro-4-ethoxy Paroxetine Hydrochloride

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rac-trans-4-Defluoro-4-ethoxy Paroxetine Hydrochloride

Controlled Product

CAS:1346597-97-4

Applications A Paroxetine (P205750) impurity. References Zukowski, J. et al.: Chirality, 15, 600 (2003); Rice, …

Formula:

C₂₁H₂₅NO₄·ClH

Color and Shape:

Beige Solid

Molecular weight:

391.89

Ref: TR-D228985

1mg		315.00 €
5mg		1,323.00 €
2500µg		702.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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2-[3-(Methylamino)-1-(2-thienyl)propyl]-1-naphthalenol Hydrochloride

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2-[3-(Methylamino)-1-(2-thienyl)propyl]-1-naphthalenol Hydrochloride

Controlled Product

CAS:1033719-36-6

Impurity Duloxetine EP Impurity E Stability Hygroscopic Applications 2-[3-(Methylamino)-1-(2-thienyl)propyl]-1-naphthalenol (Duloxetine EP Impurity E) is an …

Formula:

C₁₈H₁₉NOS•HCl

Color and Shape:

Neat

Molecular weight:

297.423646