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
4-Hydroxy-N-2-pyridinyl-2H-1,2-benzothiazine-3-carboxamide-1,1-dioxide REF: 3D-IH21308CAS: 65897-46-3	Min. 95%	136.00 €~509.00 €	Tue 11 Feb 25
Valdecoxib 3'-sulfonamide REF: 3D-FV161685CAS: 1373038-56-2	Min. 95%	To inquire	Tue 11 Feb 25
Bortezomib impurity 76 REF: 3D-IB181070CAS: 514820-48-5	Min. 95%	To inquire	Tue 11 Feb 25
Di(N-desethyl) amiodarone hydrochloride REF: 3D-ID21417CAS: 757220-04-5	Min. 95%	To inquire	Tue 11 Feb 25
Amiodarone EP Impurity G HCL REF: 3D-IA159523	Min. 95%	To inquire	Tue 11 Feb 25
Ethosuximide impurity A REF: 3D-IE171025CAS: 631-31-2	Min. 95%	58.00 €~1,047.00 €	Tue 11 Feb 25
Cefotaxime sodium impurity D REF: 3D-IC63686CAS: 65715-12-0	Min. 95%	To inquire	Tue 11 Feb 25
Norethindrone acetate impurity REF: 3D-FN26446CAS: 1175129-26-6	Min. 95%	248.00 €~1,623.00 €	Tue 11 Feb 25
rac-Norphenylephrine hydrochloride REF: 3D-IN27563CAS: 4779-94-6	Min. 95%	172.00 €~646.00 €	Tue 11 Feb 25
Cefotaxime sodium impurity C REF: 3D-IC63685CAS: 66403-32-5	Min. 95%	To inquire	Tue 11 Feb 25
10-Oxo mirtazapine REF: 3D-IO26655CAS: 191546-97-1	Min. 95%	194.00 €~1,047.00 €	Tue 11 Feb 25
2-Hydroxy-2,3-tetrahydrofuranyl entecavir REF: 3D-IH106332CAS: 1984788-96-6	Min. 95%	To inquire	Tue 11 Feb 25
N-Formyl-L-leucine (1R)-1-[[(2R,3R)-3-Hexyl-4-oxo-2-oxetanyl]methyl]dodecyl ester REF: 3D-IF26579CAS: 111466-61-6	Min. 95%	To inquire	Tue 11 Feb 25
3-(Methylamino)-1-(2-thienyl)propan-1-ol REF: 3D-IM58102CAS: 116539-56-1	Min. 95%	To inquire	Tue 11 Feb 25
(3R,5R)-Pitavastatin Calcium Salt REF: 3D-IP145450CAS: 254452-96-5	Min. 95%	436.00 €~5,517.00 €	Tue 11 Feb 25
Pravastatin 6-oxo Impurity REF: 3D-IP158589CAS: 201423-59-8	Min. 95%	To inquire	Tue 11 Feb 25
(S)-3-((R)-5-Oxopyrrolidine-2-carbonyl)thiazolidine-4-carboxylic acid REF: 3D-IO145579CAS: 162148-15-4	Min. 95%	To inquire	Tue 11 Feb 25
Losartan isomer impurity, potassium salt REF: 3D-IL24944CAS: 860644-28-6	Min. 95%	194.00 €~1,047.00 €	Tue 11 Feb 25
1,3-Bis-O-(tert-butyldimethylsilyl)-calcipotriene REF: 3D-IC166565CAS: 112875-61-3	Min. 95 Area-%	To inquire	Tue 11 Feb 25
5-Ethyl-5-phenyl-2-(1-phenylpropyl)dihydropyrimidine-4,6(1H,5H)-dione REF: 3D-IE145635CAS: 1189504-46-8	Min. 95%	To inquire	Tue 11 Feb 25

4-Hydroxy-N-2-pyridinyl-2H-1,2-benzothiazine-3-carboxamide-1,1-dioxide

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4-Hydroxy-N-2-pyridinyl-2H-1,2-benzothiazine-3-carboxamide-1,1-dioxide

CAS:65897-46-3

4-Hydroxy-N-2-pyridinyl-2H-1,2-benzothiazine-3-carboxamide-1,1dioxide is a drug product that is used as an analytical reference material. It is …

Formula:

C₁₄H₁₁N₃O₄S

Purity:

Min. 95%

Molecular weight:

317.32 g/mol

Ref: 3D-IH21308

1mg		136.00 €
2mg		166.00 €
5mg		234.00 €
10mg		352.00 €
25mg		509.00 €

Estimated delivery in United States, on Tuesday 11 Feb 2025

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Valdecoxib 3'-sulfonamide

CAS:1373038-56-2

Valdecoxib 3'-sulfonamide is a synthetic, non-naturally occurring drug product that has been custom synthesized for …

Formula:

C₁₆H₁₄N₂O₃S

Purity:

Min. 95%

Molecular weight:

314.36 g/mol

Ref: 3D-FV161685

5mg		To inquire
10mg		To inquire
25mg		To inquire
50mg		To inquire
100mg		To inquire

Estimated delivery in United States, on Tuesday 11 Feb 2025

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Bortezomib impurity 76

CAS:514820-48-5

Bortezomib impurity 76 is an analytical reference material that is used in the development and …

Formula:

C₂₁H₄₄BNO₂Si₂

Purity:

Min. 95%

Color and Shape:

Powder

Molecular weight:

409.56 g/mol

Ref: 3D-IB181070

5mg		To inquire
10mg		To inquire
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100mg		To inquire

Estimated delivery in United States, on Tuesday 11 Feb 2025

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Di(N-desethyl) amiodarone hydrochloride

CAS:757220-04-5

Di(N-desethyl) amiodarone hydrochloride is an impurity of Amiodarone Hydrochloride, which is a drug that is …

Formula:

C₂₁H₂₂ClI₂NO₃

Purity:

Min. 95%

Molecular weight:

625.67 g/mol

Ref: 3D-ID21417

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2mg		To inquire
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10mg		To inquire

Estimated delivery in United States, on Tuesday 11 Feb 2025

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Amiodarone EP Impurity G HCL

Amiodarone is a drug product that is used in the treatment of various heart conditions. …

Formula:

C₂₆H₃₁I₂NO₄·HCl

Purity:

Min. 95%

Molecular weight:

711.8 g/mol

Ref: 3D-IA159523

1mg		To inquire
2mg		To inquire
5mg		To inquire
10mg		To inquire
25mg		To inquire

Estimated delivery in United States, on Tuesday 11 Feb 2025

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Ethosuximide impurity A

CAS:631-31-2

Ethosuximide impurity A is a fluorinated compound that inhibits the enzyme acetylcholinesterase. It has been …

Formula:

C₇H₁₂O₄

Purity:

Min. 95%

Molecular weight:

160.17 g/mol

Ref: 3D-IE171025

1g		1,047.00 €
50mg		194.00 €
100mg		310.00 €
250mg		472.00 €
500mg		647.00 €

Estimated delivery in United States, on Tuesday 11 Feb 2025

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Cefotaxime sodium impurity D

CAS:65715-12-0

Cefotaxime sodium impurity D is a cephalosporin-type antibiotic that is produced by the chemical reaction …

Formula:

C₁₆H₁₆N₅O₇S₂Na

Purity:

Min. 95%

Molecular weight:

477.45 g/mol

Ref: 3D-IC63686

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

Estimated delivery in United States, on Tuesday 11 Feb 2025

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Norethindrone acetate impurity

CAS:1175129-26-6

Norethindrone acetate impurity is a drug product that is used in the development and research …

Formula:

C₂₂H₂₈O₃

Purity:

Min. 95%

Color and Shape:

Powder

Molecular weight:

340.46 g/mol

Ref: 3D-FN26446

1mg		248.00 €
2mg		364.00 €
5mg		517.00 €
10mg		863.00 €
25mg		1,623.00 €

Estimated delivery in United States, on Tuesday 11 Feb 2025

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rac-Norphenylephrine hydrochloride

Controlled Product

CAS:4779-94-6

Racemic norphenylephrine hydrochloride is a sympathomimetic amine. It is the racemic mixture of two enantiomers: …

Formula:

C₈H₁₂ClNO₂

Purity:

Min. 95%

Molecular weight:

189.64 g/mol

Ref: 3D-IN27563

10g		172.00 €
25g		310.00 €
50g		436.00 €
100g		646.00 €

Estimated delivery in United States, on Tuesday 11 Feb 2025

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Cefotaxime sodium impurity C

CAS:66403-32-5

Cefotaxime sodium impurity C is a by-product of the synthesis of cefotaxime. It is an …

Formula:

C₁₇H₁₇N₅O₈S₂

Purity:

Min. 95%

Molecular weight:

483.48 g/mol

Ref: 3D-IC63685

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Estimated delivery in United States, on Tuesday 11 Feb 2025

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10-Oxo mirtazapine

CAS:191546-97-1

10-Oxo mirtazapine is a metabolite of the antidepressant drug mirtazapine. It is an impurity in …

Formula:

C₁₇H₁₇N₃O

Purity:

Min. 95%

Molecular weight:

279.34 g/mol

Ref: 3D-IO26655

1mg		194.00 €
2mg		310.00 €
5mg		436.00 €
10mg		647.00 €
25mg		1,047.00 €

Estimated delivery in United States, on Tuesday 11 Feb 2025

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2-Hydroxy-2,3-tetrahydrofuranyl entecavir

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2-Hydroxy-2,3-tetrahydrofuranyl entecavir

CAS:1984788-96-6

2-Hydroxy-2,3-tetrahydrofuranyl entecavir is a drug product that is an impurity standard for 2-hydroxy-2,3-dihydrofuranilide. It is …

Formula:

C₁₂H₁₅N₅O₄

Purity:

Min. 95%

Molecular weight:

293.28 g/mol

Ref: 3D-IH106332

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50mg		To inquire

Estimated delivery in United States, on Tuesday 11 Feb 2025

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N-Formyl-L-leucine (1R)-1-[[(2R,3R)-3-Hexyl-4-oxo-2-oxetanyl]methyl]dodecyl ester

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N-Formyl-L-leucine (1R)-1-[[(2R,3R)-3-Hexyl-4-oxo-2-oxetanyl]methyl]dodecyl ester

CAS:111466-61-6

N-Formyl-L-leucine (1R)-1-[[(2R,3R)-3-Hexyl-4-oxo-2-oxetanyl]methyl]dodecyl ester is an impurity standard for HPLC. It is a synthetic compound that …

Formula:

C₂₉H₅₃NO₅

Purity:

Min. 95%

Molecular weight:

495.73 g/mol

Ref: 3D-IF26579

10mg To inquire

Estimated delivery in United States, on Tuesday 11 Feb 2025

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3-(Methylamino)-1-(2-thienyl)propan-1-ol

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3-(Methylamino)-1-(2-thienyl)propan-1-ol

CAS:116539-56-1

3-(Methylamino)-1-(2-thienyl)propan-1-ol is a lipase inhibitor that belongs to the group of 1-fluoronaphthalene. It is an …

Formula:

C₈H₁₃NOS

Purity:

Min. 95%

Molecular weight:

171.26 g/mol

Ref: 3D-IM58102

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Estimated delivery in United States, on Tuesday 11 Feb 2025

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(3R,5R)-Pitavastatin Calcium Salt

CAS:254452-96-5

(3R,5R)-Pitavastatin Calcium Salt is a drug product that is used in the development of pharmaceuticals. …

Formula:

C₂₅H₂₄FNO₄Ca

Purity:

Min. 95%

Color and Shape:

White/Off-White Solid

Molecular weight:

441.5 g/mol

Ref: 3D-IP145450

1mg		436.00 €
2mg		647.00 €
5mg		1,044.00 €
10mg		1,971.00 €
25mg		3,478.00 €

Estimated delivery in United States, on Tuesday 11 Feb 2025

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Pravastatin 6-oxo Impurity

CAS:201423-59-8

Pravastatin 6-oxo Impurity is an impurity of Pravastatin, a drug used in the treatment of …

Formula:

C₂₃H₃₄O₇

Purity:

Min. 95%

Molecular weight:

422.51 g/mol

Ref: 3D-IP158589

1mg		To inquire
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Estimated delivery in United States, on Tuesday 11 Feb 2025

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(S)-3-((R)-5-Oxopyrrolidine-2-carbonyl)thiazolidine-4-carboxylic acid

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(S)-3-((R)-5-Oxopyrrolidine-2-carbonyl)thiazolidine-4-carboxylic acid

CAS:162148-15-4

(S)-3-((R)-5-Oxopyrrolidine-2-carbonyl)thiazolidine-4-carboxylic acid is a drug product of the drug development industry. It is a metabolite …

Formula:

C₉H₁₂N₂O₄S

Purity:

Min. 95%

Molecular weight:

244.27 g/mol

Ref: 3D-IO145579

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

Estimated delivery in United States, on Tuesday 11 Feb 2025

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Losartan isomer impurity, potassium salt

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Losartan isomer impurity, potassium salt

CAS:860644-28-6

Losartan is an angiotensin II receptor antagonist. It is used in the treatment of hypertension …

Formula:

C₂₂H₂₂ClKN₆O

Purity:

Min. 95%

Molecular weight:

461 g/mol

Ref: 3D-IL24944

1mg		194.00 €
2mg		310.00 €
5mg		436.00 €
10mg		582.00 €
25mg		1,047.00 €

Estimated delivery in United States, on Tuesday 11 Feb 2025

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1,3-Bis-O-(tert-butyldimethylsilyl)-calcipotriene

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1,3-Bis-O-(tert-butyldimethylsilyl)-calcipotriene

CAS:112875-61-3

1,3-Bis-O-(tert-butyldimethylsilyl)-calcipotriene is a synthetic silyl ether of calcipotriene. It is used for the synthesis of …

Formula:

C₃₉H₆₈O₃Si₂

Purity:

Min. 95 Area-%

Color and Shape:

Powder

Molecular weight:

641.13 g/mol

Ref: 3D-IC166565

1mg		To inquire
2mg		To inquire
5mg		To inquire
10mg		To inquire
25mg		To inquire

Estimated delivery in United States, on Tuesday 11 Feb 2025

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5-Ethyl-5-phenyl-2-(1-phenylpropyl)dihydropyrimidine-4,6(1H,5H)-dione

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5-Ethyl-5-phenyl-2-(1-phenylpropyl)dihydropyrimidine-4,6(1H,5H)-dione

CAS:1189504-46-8

5-Ethyl-5-phenyl-2-(1-phenylpropyl)dihydropyrimidine-4,6(1H,5H)-dione is an impurity in the drug product of the drug 5-[3-(3,4-dihydroisoquinolin-2(1H)-yl)propoxy]-2,2'-bis[N-(2-hydroxyethyl)]ethaneamine. It is an …

Formula:

C₂₁H₂₄N₂O₂

Purity:

Min. 95%

Color and Shape:

White Powder

Molecular weight:

336.43 g/mol

Ref: 3D-IE145635

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250mg		To inquire

Estimated delivery in United States, on Tuesday 11 Feb 2025

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