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
1-Bromo-2-(bromomethyl)-4,5-dimethoxybenzene REF: TR-B680615CAS: 53207-00-4	- - -	195.00 €~1,390.00 €	Mon 28 Oct 24
1,4-Dihydro-1-(5-methoxy-1H-benzimidazol-2-yl)-3,5-dimethyl-4-oxo-2-pyridinecarboxylic Acid Ammonium Salt REF: TR-D449595CAS: 2227107-89-1	- - -	893.00 €~1,529.00 €	Mon 28 Oct 24
Dasatinib Dimeric Impurity REF: TR-D193620CAS: 910297-61-9	- - -	316.00 €~2,045.00 €	Mon 28 Oct 24
[4-[2-[[(3-Ethyl-2,5-dihydro-4-methyl-2-oxo-1H-pyrrol-1-yl)carbonyl]amino]ethyl]phenyl]sulfonyl]carbamic Acid Ethyl Ester REF: TR-E916540CAS: 318515-70-7	- - -	289.00 €~1,864.00 €	Mon 28 Oct 24
4’-epi-Entecavir REF: TR-E558930CAS: 1367369-80-9	- - -	301.00 €~2,056.00 €	Mon 28 Oct 24
Etoricoxib N1’-Oxide REF: TR-E934115CAS: 325855-74-1	- - -	348.00 €~2,323.00 €	Mon 28 Oct 24
3’’-HABA Kanamycin A Sulfate REF: TR-H011750CAS: 50725-25-2	- - -	324.00 €~2,209.00 €	Mon 28 Oct 24
2-Methoxyacetic Acid-d3 REF: TR-M260827CAS: 345910-00-1	- - -	245.00 €~1,573.00 €	Mon 28 Oct 24
Cycloserine Diketopiperazine REF: TR-C988810CAS: 1204-99-5	- - -	244.00 €~1,638.00 €	Mon 28 Oct 24
Z-Diniconazole REF: TR-D479821	- - -	192.00 €~2,011.00 €	Mon 28 Oct 24
S-Mirtazapine REF: TR-M364985CAS: 61337-87-9	- - -	190.00 €~511.00 €	Mon 28 Oct 24
3b-Hydroxydesogestrel REF: TR-H939005CAS: 70805-85-5	- - -	269.00 €~1,879.00 €	Mon 28 Oct 24
rac Desmethyl Citalopram-d4 Hydrobromide REF: TR-D230872CAS: 1188264-72-3	- - -	324.00 €~2,136.00 €	Mon 28 Oct 24
Tetraisopropyl Dichloromethylene Diphosphonate REF: TR-T296225CAS: 10596-22-2	- - -	200.00 €~1,417.00 €	Mon 28 Oct 24
2-(1-Hydroxyethyl) Promazine-d4 REF: TR-H942297CAS: 1346603-20-0	- - -	260.00 €~1,754.00 €	Mon 28 Oct 24
Lamotrigine N2-Oxide (90%) REF: TR-L173280CAS: 136565-76-9	90%	305.00 €~1,261.00 €	Mon 28 Oct 24
3-Demethyl Thiocolchicine REF: TR-D231330CAS: 87424-25-7	- - -	188.00 €~610.00 €	Mon 28 Oct 24
17,21-Dihydroxy-16a-methylpregna-1,4,9(11)-triene-3,20-dione 21-Acetate REF: TR-D453275CAS: 10106-41-9	- - -	362.00 €~2,464.00 €	Mon 28 Oct 24
(3R,4R,5R)-4-(1-Ethylpropoxy)-3-hydroxy-5-[(methylsulfonyl)oxy]-1-cyclohexene-1-carboxylic Acid Ethyl Ester REF: TR-E925795CAS: 204254-94-4	- - -	388.00 €~2,638.00 €	Mon 28 Oct 24
(S)-3-Hexyl-5,6-dihydro-6-undecyl-2H-pyran-2-one REF: TR-H295800CAS: 130676-64-1	- - -	268.00 €~1,855.00 €	Mon 28 Oct 24

1-Bromo-2-(bromomethyl)-4,5-dimethoxybenzene

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1-Bromo-2-(bromomethyl)-4,5-dimethoxybenzene

Controlled Product

CAS:53207-00-4

Applications 1-Bromo-2-(bromomethyl)-4,5-dimethoxybenzene is used in the synthesis of novel histone deacetylase 1 inhibitors (HDAC 1). …

Formula:

C₉H₁₀Br₂O₂

Color and Shape:

Neat

Molecular weight:

309.98

Ref: TR-B680615

1g		195.00 €
10g		783.00 €
100g		1,390.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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1,4-Dihydro-1-(5-methoxy-1H-benzimidazol-2-yl)-3,5-dimethyl-4-oxo-2-pyridinecarboxylic Acid Ammoni…

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1,4-Dihydro-1-(5-methoxy-1H-benzimidazol-2-yl)-3,5-dimethyl-4-oxo-2-pyridinecarboxylic Acid Ammonium Salt

Controlled Product

CAS:2227107-89-1

Stability Hygroscopic Applications 1,4-Dihydro-1-(6-methoxy-1H-benzimidazol-2-yl)-3,5-dimethyl-4-oxo-2-Pyridinecarboxylic Acid is an impurity of Esomeprazole (E668300). References Nalwade, S. et …

Formula:

C₁₆H₁₄N₃O₄·H₄N

Color and Shape:

Neat

Molecular weight:

330.34

Ref: TR-D449595

5mg		893.00 €
10mg		1,529.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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Dasatinib Dimeric Impurity

Controlled Product

CAS:910297-61-9

Formula:

C₃₆H₃₄Cl₂N₁₂O₂S₂

Color and Shape:

White To Beige

Molecular weight:

801.77

Ref: TR-D193620

1mg		316.00 €
10mg		2,045.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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[4-[2-[[(3-Ethyl-2,5-dihydro-4-methyl-2-oxo-1H-pyrrol-1-yl)carbonyl]amino]ethyl]phenyl]sulfonyl]ca…

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[4-[2-[[(3-Ethyl-2,5-dihydro-4-methyl-2-oxo-1H-pyrrol-1-yl)carbonyl]amino]ethyl]phenyl]sulfonyl]carbamic Acid Ethyl Ester

Controlled Product

CAS:318515-70-7

Impurity Glimepiride Ethyl Ester Impurity Applications Intermediate for the preparation of Glimepiride (G410150) and some …

Formula:

C₁₉H₂₅N₃O₆S

Color and Shape:

Neat

Molecular weight:

423.48

Ref: TR-E916540

10mg		289.00 €
100mg		1,864.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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4’-epi-Entecavir

Controlled Product

CAS:1367369-80-9

Impurity Entecavir EP Impurity D Applications 4’-epi-Entecavir is an epimeric impurity of the antiviral drug …

Formula:

C₁₂H₁₅N₅O₃

Color and Shape:

White

Molecular weight:

277.28

Ref: TR-E558930

25mg		2,056.00 €
2500µg		301.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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Etoricoxib N1’-Oxide

Controlled Product

CAS:325855-74-1

Applications Etoricoxib N1’-Oxide is an impurity of Etoricoxib (E934100). References Friesen, R., et al.: Bioorg. …

Formula:

C₁₈H₁₅ClN₂O₃S

Color and Shape:

Off White Solid

Molecular weight:

374.84

Ref: TR-E934115

10mg		348.00 €
100mg		2,323.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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3’’-HABA Kanamycin A Sulfate

Controlled Product

CAS:50725-25-2

Applications Amikacin (A578500) impurity C (EP). References Naito, T., et al.: J. Antibiot., 26, 297 …

Formula:

C₂₂H₄₃N₅O₁₃xH₂SO₄

Color and Shape:

Neat

Molecular weight:

585.6

Ref: TR-H011750

1mg		324.00 €
10mg		2,209.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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2-Methoxyacetic Acid-d3

Controlled Product

CAS:345910-00-1

Applications: Isotope labelled analogue of 2-Methoxyacetic Acid, a synthetic intermediate in the synthesis of dimethyl(alkyloxy)[(methylsulfonyl)phenyl]furanones …

Formula:

C₃H₃H₃O₃

Color and Shape:

Neat

Molecular weight:

93.10

Ref: TR-M260827

10mg		245.00 €
100mg		1,573.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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Cycloserine Diketopiperazine

Controlled Product

CAS:1204-99-5

Applications A Cycloserine dimer as potential impurity of drug Cycloserine (C988800). References Perez-Sala, D., et …

Formula:

C₆H₁₂N₄O₄

Color and Shape:

Neat

Molecular weight:

204.18

Ref: TR-C988810

25mg		244.00 €
250mg		1,638.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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Z-Diniconazole

Formula:

C₁₅H₁₇Cl₂N₃O

Color and Shape:

Neat

Ref: TR-D479821

10mg		192.00 €
50mg		836.00 €
100mg		1,444.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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S-Mirtazapine

Controlled Product

CAS:61337-87-9

Applications S-Mirtazapine is an enantiomer of Mirtazapine (M365000); an antidepressant. R-Mirtazapine showed antinociceptive effects in …

Formula:

C₁₇H₁₉N₃

Color and Shape:

Neat

Molecular weight:

265.35

Ref: TR-M364985

5mg		190.00 €
10mg		281.00 €
25mg		511.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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3b-Hydroxydesogestrel

Controlled Product

CAS:70805-85-5

Stability Light Sensitive Applications 3β-Hydroxydesogestrel is a metabolite of Desogestrel (D296875), a progestogen with low …

Formula:

C₂₂H₃₀O₂

Color and Shape:

White

Molecular weight:

326.47

Ref: TR-H939005

10mg		269.00 €
100mg		1,879.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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rac Desmethyl Citalopram-d4 Hydrobromide

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rac Desmethyl Citalopram-d4 Hydrobromide

Controlled Product

CAS:1188264-72-3

Applications rac Desmethyl Citalopram-d4 Hydrobromide is the labeled analogue of rac Desmethyl Citalopram Hydrobromide (D230870), …

Formula:

C₁₉H₁₆D₄BrFN₂O

Color and Shape:

Neat

Molecular weight:

395.3

Ref: TR-D230872

1mg		324.00 €
10mg		2,136.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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Tetraisopropyl Dichloromethylene Diphosphonate

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Tetraisopropyl Dichloromethylene Diphosphonate

Controlled Product

CAS:10596-22-2

Stability Moisture Sensitive, Temperature Sensitive Applications Tetraisopropyl Dichloromethylene Diphosphonate is an intermediate in the sythesis …

Formula:

C₁₃H₂₈Cl₂O₆P₂

Color and Shape:

Neat

Molecular weight:

413.21

Ref: TR-T296225

50mg		200.00 €
500mg		1,417.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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2-(1-Hydroxyethyl) Promazine-d4

Controlled Product

CAS:1346603-20-0

Applications A labelled metabolite of Acepromazine (A130900). References Cossum, P., et al.: Drug Dispos., 9, …

Formula:

C₁₉H₂₀D₄N₂OS

Color and Shape:

Neat

Molecular weight:

332.5

Ref: TR-H942297

25mg		1,754.00 €
2500µg		260.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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Lamotrigine N2-Oxide (90%)

Controlled Product

CAS:136565-76-9

Applications Lamotrigine analog for production of anti-lamotrigine antibodies and use as immunoassay reagent. Not a …

Formula:

C₉H₇Cl₂N₅O

Purity:

90%

Color and Shape:

Neat

Molecular weight:

272.09

Ref: TR-L173280

5mg		305.00 €
10mg		519.00 €
25mg		1,261.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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3-Demethyl Thiocolchicine

Controlled Product

CAS:87424-25-7

Stability Hygroscopic Applications A Thiocolchicine metabolite, used in therapy as an antitunor, antiinflammatory and immunosuppressive …

Formula:

C₂₁H₂₃NO₅S

Color and Shape:

Neat

Molecular weight:

401.48

Ref: TR-D231330

5mg		188.00 €
10mg		251.00 €
25mg		610.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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17,21-Dihydroxy-16a-methylpregna-1,4,9(11)-triene-3,20-dione 21-Acetate

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17,21-Dihydroxy-16a-methylpregna-1,4,9(11)-triene-3,20-dione 21-Acetate

Controlled Product

CAS:10106-41-9

Applications 17,21-Dihydroxy-16α-methylpregna-1,4,9(11)-triene-3,20-dione 21-Acetate is an intermediate in the synthesis of Mometasone Furoate (M490000), a tropical …

Formula:

C₂₄H₃₀O₅

Color and Shape:

White To Light Yellow

Molecular weight:

398.49

Ref: TR-D453275

10mg		362.00 €
100mg		2,464.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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(3R,4R,5R)-4-(1-Ethylpropoxy)-3-hydroxy-5-[(methylsulfonyl)oxy]-1-cyclohexene-1-carboxylic Acid Et…

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(3R,4R,5R)-4-(1-Ethylpropoxy)-3-hydroxy-5-[(methylsulfonyl)oxy]-1-cyclohexene-1-carboxylic Acid Ethyl Ester

Controlled Product

CAS:204254-94-4

Applications (3R,4R,5R)-4-(1-Ethylpropoxy)-3-hydroxy-5-[(methylsulfonyl)oxy]-1-cyclohexene-1-carboxylic Acid Ethyl Ester is an analog of (1R,5S,6S)-rel-5-(1-Ethylpropoxy)-7-oxabicyclo[4.1.0]hept-3-ene-3-carboxylic Acid Methyl Ester (E925665) which …

Formula:

C₁₅H₂₆O₇S

Color and Shape:

Neat

Molecular weight:

350.43

Ref: TR-E925795

1mg		388.00 €
10mg		2,638.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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(S)-3-Hexyl-5,6-dihydro-6-undecyl-2H-pyran-2-one

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(S)-3-Hexyl-5,6-dihydro-6-undecyl-2H-pyran-2-one

Controlled Product

CAS:130676-64-1

Impurity Orlistat dihydropyranone impurity Applications A degradation product of Tetrahydrolipstatin (Orlistat). Orlistat impurity. References Weibel, …

Formula:

C₂₂H₄₀O₂

Color and Shape:

White

Molecular weight:

336.55

Ref: TR-H295800

5mg		268.00 €
50mg		1,855.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

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