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.

20
- 50
- 100
- 200

products per page. 4641 products on this category.

Product data	Purity	Price range	Estimated delivery
5-epi Emtricitabine REF: TR-E524980CAS: 145986-26-1	- - -	346.00 €~2,236.00 €	Mon 14 Apr 25
rac Methyl Efavirenz (Mixture of Diastereomers) REF: TR-M303900CAS: 353270-76-5	- - -	340.00 €~2,155.00 €	Mon 14 Apr 25
Efavirenz Amino Alcohol Ethyl Carbamate REF: TR-E425015CAS: 211563-41-6	- - -	387.00 €~2,667.00 €	Mon 14 Apr 25
ent-Emtricitabine REF: TR-E525005CAS: 137530-41-7	- - -	339.00 €~2,182.00 €	Mon 14 Apr 25
Efavirenz 1-Desamine-1-oxy REF: TR-E425035	- - -	186.00 €~2,216.00 €	Mon 14 Apr 25
N-Cyano-3-O-methyl Norbuprenorphine-d9 REF: TR-C982092CAS: 16614-60-1	- - -	266.00 €~1,772.00 €	Mon 14 Apr 25
N-(p-Aminophenethyl)spiperone REF: TR-A618915CAS: 93801-18-4	- - -	247.00 €	Mon 14 Apr 25
4-Ethyl-1,3-dihydro-2H-indol-2-one REF: TR-E917320CAS: 954117-24-9	- - -	405.00 €~2,705.00 €	Mon 14 Apr 25
4-Methyl-N-[(1S)-1-methyl-2-[[(4-methylphenyl)sulfonyl]oxy]ethyl]benzenesulfonamide REF: TR-M320405CAS: 88129-44-6	- - -	282.00 €~1,901.00 €	Mon 14 Apr 25
Phlorisovalerophenone REF: TR-P339590CAS: 26103-97-9	- - -	249.00 €~1,591.00 €	Mon 14 Apr 25
16a-Hydroxy Androsterone REF: TR-H828170CAS: 14167-49-8	- - -	282.00 €~1,901.00 €	Mon 14 Apr 25
δ6-1,2-Dihydro Beclomethasone Dipropionate REF: TR-D448405	- - -	398.00 €~2,701.00 €	Mon 14 Apr 25
2-Chloro-4-piperazin-1-ylphenol Dihydrochloride REF: TR-C379665CAS: 85474-76-6	- - -	230.00 €~1,518.00 €	Mon 14 Apr 25
Nalfurafine N-Oxide REF: TR-N255605CAS: 208042-42-6	- - -	343.00 €~2,284.00 €	Mon 14 Apr 25
Streptidine Dihydrochloride REF: TR-S687405CAS: 85-17-6	- - -	343.00 €~2,216.00 €	Mon 14 Apr 25
3-Amino-2,4-xylenol REF: TR-A632430CAS: 100445-96-3	- - -	287.00 €~1,906.00 €	Mon 14 Apr 25
O-Deshydroxyethyl Bosentan REF: TR-D290485CAS: 174227-14-6	- - -	335.00 €~2,185.00 €	Mon 14 Apr 25
N-(3S)-1-Azabicyclo[2.2.2]oct-3-yl-5,6-dihydro-1-Naphthalenecarboxamide REF: TR-A795305CAS: 1227162-75-5	- - -	282.00 €~1,899.00 €	Mon 14 Apr 25
(R,S)-Anatabine Tartrate (2:3) REF: TR-A637510CAS: 2743-90-0	- - -	217.00 €~1,544.00 €	Mon 14 Apr 25
N-Des(4-Fluorophenyl)-N-(3-chlorophenyl)-ezetimibe REF: TR-D292320CAS: 1700622-08-7	- - -	282.00 €~1,901.00 €	Mon 14 Apr 25

+ info

5-epi Emtricitabine

Controlled Product

CAS:145986-26-1

Applications 5-epi Emtricitabine is an epimer of Emtricitabine (E525000), a nucleoside reverse transcriptase inhibitor approved …

Formula:

C₈H₁₀FN₃O₃S

Color and Shape:

Neat

Molecular weight:

247.25

Ref: TR-E524980

1mg		346.00 €
10mg		2,236.00 €

Estimated delivery in United States, on Monday 14 Apr 2025

+ info

rac Methyl Efavirenz (Mixture of Diastereomers)

+ info

rac Methyl Efavirenz (Mixture of Diastereomers)

Controlled Product

CAS:353270-76-5

Applications Efavirenz (E425000) potential synthetic impurity and degradation product. Not a dangerous good if item …

Formula:

C₁₅H₁₁ClF₃NO₂

Color and Shape:

Neat

Molecular weight:

329.70

Ref: TR-M303900

1mg		340.00 €
10mg		2,155.00 €

Estimated delivery in United States, on Monday 14 Apr 2025

+ info

+ info

Efavirenz Amino Alcohol Ethyl Carbamate

Controlled Product

CAS:211563-41-6

Applications Efavirenz Amino Alcohol Ethyl Carbamate is used in the synthesis of Efavirenz (E425000), a …

Formula:

C₁₆H₁₅ClF₃NO₃

Color and Shape:

Neat

Molecular weight:

361.74

Ref: TR-E425015

10mg		387.00 €
100mg		2,667.00 €

Estimated delivery in United States, on Monday 14 Apr 2025

+ info

+ info

ent-Emtricitabine

Controlled Product

CAS:137530-41-7

Stability Hygroscopic Applications A reverse transcriptase inhibitor. It is an effective antiviral agent against HIV, …

Formula:

C₈H₁₀FN₃O₃S

Color and Shape:

Neat

Molecular weight:

247.25

Ref: TR-E525005

1mg		339.00 €
10mg		2,182.00 €

Estimated delivery in United States, on Monday 14 Apr 2025

+ info

+ info

Efavirenz 1-Desamine-1-oxy

Controlled Product

Applications Efavirenz 1-Desamine-1-oxy is an analog of Efavirenz (E425000), a nonnucleoside HIV-1 reverse transcriptase inhibitor. …

Formula:

C₁₄H₈ClF₃O₃

Color and Shape:

Neat

Molecular weight:

316.66

Ref: TR-E425035

1mg		186.00 €
10mg		343.00 €
100mg		2,216.00 €

Estimated delivery in United States, on Monday 14 Apr 2025

+ info

+ info

N-Cyano-3-O-methyl Norbuprenorphine-d9

Controlled Product

CAS:16614-60-1

Applications Intermediate in the preparation of labelled Buprenorphine derivatives.

Formula:

C₂₇H₂₇D₉N₂O₄

Color and Shape:

Neat

Molecular weight:

461.64

Ref: TR-C982092

5mg		1,772.00 €
500µg		266.00 €

Estimated delivery in United States, on Monday 14 Apr 2025

+ info

+ info

N-(p-Aminophenethyl)spiperone

Controlled Product

CAS:93801-18-4

Applications Analogue of Spiperone. References Chivers, J., et al.: Br. J. Pharmacol., 90, 467 (1987), …

Formula:

C₃₁H₃₅FN₄O₂

Color and Shape:

Neat

Molecular weight:

514.63

Ref: TR-A618915

1mg 247.00 €

Estimated delivery in United States, on Monday 14 Apr 2025

+ info

+ info

4-Ethyl-1,3-dihydro-2H-indol-2-one

Controlled Product

CAS:954117-24-9

Applications 4-Ethyl-1,3-dihydro-2H-indol-2-one is an impurity of Ropinirole (R641000).

Formula:

C₁₀H₁₁NO

Color and Shape:

Neat

Molecular weight:

161.2

Ref: TR-E917320

10mg		405.00 €
100mg		2,705.00 €

Estimated delivery in United States, on Monday 14 Apr 2025

+ info

4-Methyl-N-[(1S)-1-methyl-2-[[(4-methylphenyl)sulfonyl]oxy]ethyl]benzenesulfonamide

+ info

4-Methyl-N-[(1S)-1-methyl-2-[[(4-methylphenyl)sulfonyl]oxy]ethyl]benzenesulfonamide

Controlled Product

CAS:88129-44-6

Applications 4-Methyl-N-[(1S)-1-methyl-2-[[(4-methylphenyl)sulfonyl]oxy]ethyl]benzenesulfonamide is an intermediate in the synthesis of chiral annulet of 1,4,7-triazacyclononanes. References Argouarch, …

Formula:

C₁₇H₂₁NO₅S₂

Color and Shape:

Neat

Molecular weight:

383.48

Ref: TR-M320405

250mg		282.00 €
2500mg		1,901.00 €

Estimated delivery in United States, on Monday 14 Apr 2025

+ info

+ info

Phlorisovalerophenone

Controlled Product

CAS:26103-97-9

Applications Phlorisovalerophenone is an intermediate in the synthesis of Lupulone (L478000), and anticancer/anti-HIV dimeric phlorglucinols. …

Formula:

C₁₁H₁₄O₄

Color and Shape:

Neat

Molecular weight:

210.23

Ref: TR-P339590

1g		249.00 €
10g		1,591.00 €

Estimated delivery in United States, on Monday 14 Apr 2025

+ info

+ info

16a-Hydroxy Androsterone

Controlled Product

CAS:14167-49-8

Applications 16α-Hydroxy Androsterone is an impurity of Androsterone (A637535), a steroid hormone with weak androgenic …

Formula:

C₁₉H₃₀O₃

Color and Shape:

Neat

Molecular weight:

306.44

Ref: TR-H828170

10mg		282.00 €
100mg		1,901.00 €

Estimated delivery in United States, on Monday 14 Apr 2025

+ info

δ6-1,2-Dihydro Beclomethasone Dipropionate

+ info

δ6-1,2-Dihydro Beclomethasone Dipropionate

Controlled Product

Applications An impurity of Beclomethasone Dipropionate (B131030).

Formula:

C₂₈H₃₇ClO₇

Color and Shape:

Neat

Molecular weight:

521.0422

Ref: TR-D448405

25mg		2,701.00 €
2500µg		398.00 €

Estimated delivery in United States, on Monday 14 Apr 2025

+ info

2-Chloro-4-piperazin-1-ylphenol Dihydrochloride

+ info

2-Chloro-4-piperazin-1-ylphenol Dihydrochloride

Controlled Product

CAS:85474-76-6

Applications A metabolite of Nefazodone (N389100), a novel antidepressant. References Myol, R., et al.: Clin. …

Formula:

C₁₀H₁₃ClN₂O

Color and Shape:

Neat

Molecular weight:

212.68

Ref: TR-C379665

10mg		230.00 €
100mg		1,518.00 €

Estimated delivery in United States, on Monday 14 Apr 2025

+ info

+ info

Nalfurafine N-Oxide

Controlled Product

CAS:208042-42-6

Stability Hygroscopic Applications Nalfurafine N-Oxide, is an impurity of Nalfurafine (N255600), which is a κ-opioid …

Formula:

C₂₈H₃₂N₂O₆

Color and Shape:

Neat

Molecular weight:

492.56

Ref: TR-N255605

5mg		343.00 €
50mg		2,284.00 €

Estimated delivery in United States, on Monday 14 Apr 2025

+ info

+ info

Streptidine Dihydrochloride

Controlled Product

CAS:85-17-6

Stability Hygroscopic Applications Streptidine is a metabolite derivative of Streptomycin (S687500), an antibiotic (antimycobacterial) drug, …

Formula:

C₈H₂₀Cl₂N₆O₄

Color and Shape:

Neat

Molecular weight:

335.19

Ref: TR-S687405

10mg		343.00 €
100mg		2,216.00 €

Estimated delivery in United States, on Monday 14 Apr 2025

+ info

+ info

3-Amino-2,4-xylenol

Controlled Product

CAS:100445-96-3

Applications Lidocaine (L397800) metabolite. Not a dangerous good if item is equal to or less …

Formula:

C₈H₁₁NO

Color and Shape:

Neat

Molecular weight:

137.18

Ref: TR-A632430

10mg		287.00 €
100mg		1,906.00 €

Estimated delivery in United States, on Monday 14 Apr 2025

+ info

+ info

O-Deshydroxyethyl Bosentan

CAS:174227-14-6

Impurity Bosentan USP Related Compound B Applications O-Deshydroxyethyl Bosentan (Bosentan USP Related Compound B) is …

Formula:

C₂₅H₂₅N₅O₅S

Color and Shape:

Beige

Molecular weight:

507.56

Ref: TR-D290485

50mg		335.00 €
500mg		2,185.00 €

Estimated delivery in United States, on Monday 14 Apr 2025

+ info

N-(3S)-1-Azabicyclo[2.2.2]oct-3-yl-5,6-dihydro-1-Naphthalenecarboxamide

+ info

N-(3S)-1-Azabicyclo[2.2.2]oct-3-yl-5,6-dihydro-1-Naphthalenecarboxamide

Controlled Product

CAS:1227162-75-5

Applications N-(3S)-1-Azabicyclo[2.2.2]oct-3-yl-5,6-dihydro-1-Naphthalenecarboxamide is an impurity of Palonosetron (P165800), a serotonin 5-HT3 receptor antagonist used in …

Formula:

C₁₈H₂₂N₂O

Color and Shape:

Neat

Molecular weight:

282.38