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
Bupropion (R)-Isomer REF: 3D-IB159729CAS: 437723-96-1	Min. 95%	To inquire	Thu 23 Jan 25
rac-N-Desbutyroyl acebutolol REF: 3D-IR27556CAS: 57898-80-3	Min. 95%	To inquire	Thu 23 Jan 25
a-(Aminocarbonyl)-4-[2-(5-ethyl-2-pyridinyl)ethoxy]benzeneethanesulfonic acid REF: 3D-IA27057CAS: 625853-73-8	Min. 95%	To inquire	Thu 23 Jan 25
Clarithromycin-N-methyl-d3 REF: 3D-IC183141CAS: 959119-22-3	Min. 95%	341.00 €~2,296.00 €	Thu 23 Jan 25
(5aR,10aR)-Tetrahydro-3H,5H,8H,10H-bisthiazolo[3,4-a:3',4'-d]pyrazine-5,10-dione REF: 3D-IT145578CAS: 72744-67-3	Min. 95%	To inquire	Thu 23 Jan 25
Apixaban Impurity 11 REF: 3D-IA182667CAS: 2204368-51-2	Min. 95%	To inquire	Thu 23 Jan 25
Remdesivir impurity 5 REF: 3D-IR177102CAS: 2093124-22-0	Min. 95%	To inquire	Thu 23 Jan 25
O-De(3-fluorobenzyl) lapatinib ditosylate REF: 3D-ID182745CAS: 2749357-22-8	Min. 95%	480.00 €~3,188.00 €	Thu 23 Jan 25
Captopril EP Impurity N REF: 3D-IC182781CAS: 65134-74-9	Min. 95%	To inquire	Thu 23 Jan 25
Captopril EP Impurity H REF: 3D-IC182780CAS: 205521-07-9	Min. 95%	To inquire	Thu 23 Jan 25
Methyl 4-[[1-(ethoxycarbonyl)-2-oxocyclopentyl]methyl]-α-methylbenzeneacetate REF: 3D-IM184082CAS: 1152440-23-7	Min. 95%	To inquire	Thu 23 Jan 25
2-Methoxyethyl-3-aminocrotonate REF: 3D-IM57945CAS: 50899-10-0	Min. 95%	To inquire	Thu 23 Jan 25
Risperidone N-oxide REF: 3D-IR27739CAS: 832747-55-4	Min. 95%	213.00 €~1,021.00 €	Thu 23 Jan 25
Linezolid N-oxide REF: 3D-IL184105CAS: 189038-36-6	Min. 95%	248.00 €~1,044.00 €	Thu 23 Jan 25
Tadalafil spiro-urethane impurity (EP impurity F) REF: 3D-IT183411CAS: 2747958-44-5	Min. 95%	To inquire	Thu 23 Jan 25
N-(4-Hydroxyphenyl)acetamide sulfate-d3 sodium REF: 3D-IH183408CAS: 2733160-80-8	Min. 95%	To inquire	Thu 23 Jan 25
3,4-Dihydro-7-(3’carboxy)propoxy-2(1H)-quinolinone REF: 3D-ID183546CAS: 58899-27-7	Min. 95%	68.00 €~865.00 €	Thu 23 Jan 25
3-HABA kanamycin A sulfate REF: 3D-IH183545CAS: 50725-24-1	Min. 95%	760.00 €~8,347.00 €	Thu 23 Jan 25
1,1-Dimethylethyl (3S,5S,6E)-7-[4-(4-fluorophenyl)-6-(1-methylethyl)-2-[methyl(methylsulfonyl)amino]-5-pyrimidinyl]-3,5-dihydroxy-6- heptenoate REF: 3D-ID184091CAS: 2185805-16-5	Min. 95%	To inquire	Thu 23 Jan 25
Sodium picosulfate EP Impurity A REF: 3D-IS178199CAS: 32500-19-9	Min. 95%	To inquire	Thu 23 Jan 25

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Bupropion (R)-Isomer

Controlled Product

CAS:437723-96-1

Bupropion is a racemic mixture of two enantiomers. The (R)-isomer is the more active form …

Formula:

C₁₃H₁₈ClNO

Purity:

Min. 95%

Molecular weight:

239.74 g/mol

Ref: 3D-IB159729

5mg		To inquire
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25mg		To inquire

Estimated delivery in United States, on Thursday 23 Jan 2025

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rac-N-Desbutyroyl acebutolol

CAS:57898-80-3

rac-N-Desbutyroyl acebutolol is a prodrug that is metabolized to the active form, acebutolol. The metabolism …

Formula:

C₁₄H₂₂N₂O₃

Purity:

Min. 95%

Molecular weight:

266.34 g/mol

Ref: 3D-IR27556

10mg		To inquire
25mg		To inquire
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100mg		To inquire
250mg		To inquire

Estimated delivery in United States, on Thursday 23 Jan 2025

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a-(Aminocarbonyl)-4-[2-(5-ethyl-2-pyridinyl)ethoxy]benzeneethanesulfonic acid

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a-(Aminocarbonyl)-4-[2-(5-ethyl-2-pyridinyl)ethoxy]benzeneethanesulfonic acid

CAS:625853-73-8

a-(Aminocarbonyl)-4-[2-(5-ethyl-2-pyridinyl)ethoxy]benzeneethanesulfonic acid is an analytical standard that is used in the drug development process. It …

Formula:

C₁₈H₂₂N₂O₅S

Purity:

Min. 95%

Molecular weight:

378.44 g/mol

Ref: 3D-IA27057

2mg		To inquire
5mg		To inquire
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50mg		To inquire

Estimated delivery in United States, on Thursday 23 Jan 2025

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Clarithromycin-N-methyl-d3

CAS:959119-22-3

Please enquire for more information about Clarithromycin-N-methyl-d3 including the price, delivery time and more detailed …

Formula:

C₃₈H₆₆D₃NO₁₃

Purity:

Min. 95%

Molecular weight:

750.97 g/mol

Ref: 3D-IC183141

1mg		341.00 €
2mg		455.00 €
5mg		711.00 €
10mg		1,021.00 €
25mg		2,296.00 €

Estimated delivery in United States, on Thursday 23 Jan 2025

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(5aR,10aR)-Tetrahydro-3H,5H,8H,10H-bisthiazolo[3,4-a:3',4'-d]pyrazine-5,10-dione

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(5aR,10aR)-Tetrahydro-3H,5H,8H,10H-bisthiazolo[3,4-a:3',4'-d]pyrazine-5,10-dione

CAS:72744-67-3

(5aR,10aR)-Tetrahydro-3H,5H,8H,10H-bisthiazolo[3,4-a:3',4'-d]pyrazine-5,10-dione is a drug product that is an impurity standard for the API (Active Pharmaceutical …

Formula:

C₈H₁₀N₂O₄₂S₂

Purity:

Min. 95%

Molecular weight:

870.29 g/mol

Ref: 3D-IT145578

1mg		To inquire
2mg		To inquire
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25mg		To inquire

Estimated delivery in United States, on Thursday 23 Jan 2025

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Apixaban Impurity 11

CAS:2204368-51-2

Apixaban impurity 11 is an analytical standard used in research and development, drug development, and …

Formula:

C₂₉H₃₁N₅O₅

Purity:

Min. 95%

Molecular weight:

529.59 g/mol

Ref: 3D-IA182667

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100mg		To inquire

Estimated delivery in United States, on Thursday 23 Jan 2025

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Remdesivir impurity 5

CAS:2093124-22-0

Remdesivir impurity 5 is a metabolite that is generated in the body following metabolism and …

Formula:

C₂₁H₂₇N₂O₇P

Purity:

Min. 95%

Molecular weight:

450.42 g/mol

Ref: 3D-IR177102

1mg		To inquire
5mg		To inquire
10mg		To inquire

Estimated delivery in United States, on Thursday 23 Jan 2025

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O-De(3-fluorobenzyl) lapatinib ditosylate

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O-De(3-fluorobenzyl) lapatinib ditosylate

CAS:2749357-22-8

O-De(3-fluorobenzyl) lapatinib ditosylate (OFLB) is a drug product that is supplied as a white to …

Formula:

C₂₂H₂₁ClN₄O₄S•(C₇H₈O₃S)₂

Purity:

Min. 95%

Molecular weight:

817.35 g/mol

Ref: 3D-ID182745

1mg		480.00 €
2mg		711.00 €
5mg		1,021.00 €
10mg		1,786.00 €
25mg		3,188.00 €

Estimated delivery in United States, on Thursday 23 Jan 2025

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Captopril EP Impurity N

CAS:65134-74-9

Captopril EP Impurity N is a synthetic impurity found in Captopril EP, which is used …

Formula:

C₈H₁₄O₄S₂

Purity:

Min. 95%

Molecular weight:

238.33 g/mol

Ref: 3D-IC182781

1mg		To inquire
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25mg		To inquire

Estimated delivery in United States, on Thursday 23 Jan 2025

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Captopril EP Impurity H

CAS:205521-07-9

Captopril EP Impurity H is a drug product that is used as an analytical reference …

Formula:

C₁₅H₂₃NO₅S₂

Purity:

Min. 95%

Molecular weight:

361.48 g/mol

Ref: 3D-IC182780

1mg		To inquire
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25mg		To inquire

Estimated delivery in United States, on Thursday 23 Jan 2025

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Methyl 4-[[1-(ethoxycarbonyl)-2-oxocyclopentyl]methyl]-α-methylbenzeneacetate

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Methyl 4-[[1-(ethoxycarbonyl)-2-oxocyclopentyl]methyl]-α-methylbenzeneacetate

CAS:1152440-23-7

Please enquire for more information about Methyl 4-[[1-(ethoxycarbonyl)-2-oxocyclopentyl]methyl]-α-methylbenzeneacetate including the price, delivery time and more …

Formula:

C₁₉H₂₄O₅

Purity:

Min. 95%

Molecular weight:

332.39 g/mol

Ref: 3D-IM184082

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Estimated delivery in United States, on Thursday 23 Jan 2025

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2-Methoxyethyl-3-aminocrotonate

CAS:50899-10-0

2-Methoxyethyl-3-aminocrotonate is an impurity of a drug product. It is an analytical standard that is …

Formula:

C₇H₁₃NO₃

Purity:

Min. 95%

Molecular weight:

159.18 g/mol

Ref: 3D-IM57945

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Estimated delivery in United States, on Thursday 23 Jan 2025

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Risperidone N-oxide

CAS:832747-55-4

Risperidone N-oxide is a prodrug of risperidone. It is prepared by reacting risperidone with methanol …

Formula:

C₂₃H₂₇FN₄O₃

Purity:

Min. 95%

Molecular weight:

426.48 g/mol

Ref: 3D-IR27739

1mg		213.00 €
2mg		341.00 €
5mg		480.00 €
10mg		569.00 €
25mg		1,021.00 €

Estimated delivery in United States, on Thursday 23 Jan 2025

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Linezolid N-oxide

CAS:189038-36-6

Please enquire for more information about Linezolid N-oxide including the price, delivery time and more …

Formula:

C₁₆H₂₀FN₃O₅

Purity:

Min. 95%

Molecular weight:

353.35 g/mol

Ref: 3D-IL184105

1mg		248.00 €
2mg		364.00 €
5mg		517.00 €
10mg		740.00 €
25mg		1,044.00 €

Estimated delivery in United States, on Thursday 23 Jan 2025

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Tadalafil spiro-urethane impurity (EP impurity F)

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Tadalafil spiro-urethane impurity (EP impurity F)

CAS:2747958-44-5

Please enquire for more information about Tadalafil spiro-urethane impurity (EP impurity F) including the price, …

Formula:

C₂₂H₁₉N₃O₆

Purity:

Min. 95%

Molecular weight:

421.4 g/mol

Ref: 3D-IT183411

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10mg		To inquire

Estimated delivery in United States, on Thursday 23 Jan 2025

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N-(4-Hydroxyphenyl)acetamide sulfate-d3 sodium

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N-(4-Hydroxyphenyl)acetamide sulfate-d3 sodium

CAS:2733160-80-8

Please enquire for more information about N-(4-Hydroxyphenyl)acetamide sulfate-d3 sodium including the price, delivery time and …

Formula:

C₈H₆D₃NO₅S•Na

Purity:

Min. 95%

Molecular weight:

257.24 g/mol

Ref: 3D-IH183408

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Estimated delivery in United States, on Thursday 23 Jan 2025

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3,4-Dihydro-7-(3’carboxy)propoxy-2(1H)-quinolinone

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3,4-Dihydro-7-(3’carboxy)propoxy-2(1H)-quinolinone

Controlled Product

CAS:58899-27-7

Please enquire for more information about 3,4-Dihydro-7-(3’carboxy)propoxy-2(1H)-quinolinone including the price, delivery time and more detailed …

Formula:

C₁₃H₁₅NO₄

Purity:

Min. 95%

Color and Shape:

Powder

Molecular weight:

249.26 g/mol

Ref: 3D-ID183546

1g		865.00 €
50mg		172.00 €
100mg		248.00 €
250mg		363.00 €
500mg		520.00 €

Estimated delivery in United States, on Thursday 23 Jan 2025

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3-HABA kanamycin A sulfate

CAS:50725-24-1

Please enquire for more information about 3-HABA kanamycin A sulfate including the price, delivery time …

Formula:

C₂₂H₄₃N₅O₁₃•(H₂SO₄)x

Purity:

Min. 95%

Ref: 3D-IH183545

1mg		1,102.00 €
2mg		1,971.00 €
5mg		4,290.00 €
10mg		8,347.00 €

Estimated delivery in United States, on Thursday 23 Jan 2025

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1,1-Dimethylethyl (3S,5S,6E)-7-[4-(4-fluorophenyl)-6-(1-methylethyl)-2-[methyl(methylsulfonyl)amin…

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1,1-Dimethylethyl (3S,5S,6E)-7-[4-(4-fluorophenyl)-6-(1-methylethyl)-2-[methyl(methylsulfonyl)amino]-5-pyrimidinyl]-3,5-dihydroxy-6- heptenoate

CAS:2185805-16-5

Please enquire for more information about 1,1-Dimethylethyl (3S,5S,6E)-7-[4-(4-fluorophenyl)-6-(1-methylethyl)-2-[methyl(methylsulfonyl)amino]-5-pyrimidinyl]-3,5-dihydroxy-6- heptenoate including the price, delivery time and …

Formula:

C₂₆H₃₆FN₃O₆S

Purity:

Min. 95%

Molecular weight:

537.65 g/mol