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
2-(Diethylamino)-N-(2,3-dimethylphenyl)acetamide Hydrochloride REF: TR-D443745CAS: 857170-72-0	- - -	316.00 €~2,109.00 €	Fri 27 Dec 24
1-(3-Chlorophenyl)-2-hydroxy-1-propanone REF: TR-C378500CAS: 152943-33-4	- - -	250.00 €~1,885.00 €	Fri 27 Dec 24
1,2-Bismethylphenidate (Mixture of diastereomers) REF: TR-B583520	- - -	331.00 €~2,148.00 €	Fri 27 Dec 24
7,8-Dihydro-1-naphthalenol REF: TR-D451130CAS: 51927-48-1	- - -	123.00 €~1,521.00 €	Fri 27 Dec 24
N-[[2-[[[4-[[[(Hexyloxy)carbonyl]amino]carbonyl]phenyl]amino]methyl]-1-methyl-1H-benzimidazol-5-yl]carbonyl]-N-2-pyridinyl-beta-alanine Ethyl Ester REF: TR-H298150CAS: 1408238-40-3	- - -	182.00 €~1,394.00 €	Fri 27 Dec 24
Venlafaxine N-Oxide REF: TR-V120020CAS: 1094598-37-4	- - -	324.00 €~2,253.00 €	Fri 27 Dec 24
5-Chloro-N-methylthiophene-2-carboxamide REF: TR-C373840CAS: 97799-98-9	- - -	252.00 €~1,732.00 €	Fri 27 Dec 24
[[4-[[2-(1-Methylethoxy)ethoxy]methyl]phenoxy]methyl]oxirane REF: TR-M304765CAS: 66722-57-4	- - -	224.00 €~1,585.00 €	Fri 27 Dec 24
Loxapine N-Oxide REF: TR-L472755CAS: 25967-34-4	- - -	300.00 €~1,965.00 €	Fri 27 Dec 24
2,4-Dicyano-3-(2-methylpropyl)-pentanediamide (Mixture of Diastereomers) REF: TR-D437780CAS: 185815-56-9	- - -	319.00 €~2,118.00 €	Fri 27 Dec 24
1-Propyl Etodolac REF: TR-P835250CAS: 57816-83-8	- - -	252.00 €~1,733.00 €	Fri 27 Dec 24
Flumazenil Carboxylic Acid REF: TR-F500455CAS: 84378-44-9	- - -	328.00 €~2,211.00 €	Fri 27 Dec 24
(S)-Lisinopril Dimer REF: TR-L469010CAS: 1356839-89-8	- - -	401.00 €~12,017.00 €	Fri 27 Dec 24
Magnesium Valproate REF: TR-M110350CAS: 62959-43-7	- - -	313.00 €~2,013.00 €	Fri 27 Dec 24
N-Desmethyl-benzotropine Hydrochloride REF: TR-D291040CAS: 25471-67-4	- - -	315.00 €~2,114.00 €	Fri 27 Dec 24
1,2,3,9-Tetrahydro-9-methyl-3-methylene-4H-carbazol-4-one REF: TR-T293930CAS: 99614-64-9	- - -	310.00 €~1,974.00 €	Fri 27 Dec 24
4-[4-(4-Chlorophenyl)-3,6-dihydro-1(2H)-pyridinyl]-1-(4-fluorophenyl)-1-butanone REF: TR-C376580CAS: 52669-92-8	- - -	320.00 €~2,114.00 €	Fri 27 Dec 24
6-Hydroxy-3,4-dihydro-1H-quinoline-2-one REF: TR-H941423CAS: 54197-66-9	- - -	117.00 €~173.00 €	Fri 27 Dec 24
N-Desmethyl Ibandronate Sodium REF: TR-D291755CAS: 953805-81-7	- - -	325.00 €~2,136.00 €	Fri 27 Dec 24
4-[4-[4-(Diphenylmethylene)-1-piperidinyl]-1-hydroxybutyl]-Alpha,Alpha-dimethyl-benzeneacetic Acid REF: TR-D492020CAS: 1187954-57-9	- - -	322.00 €~2,041.00 €	Fri 27 Dec 24

2-(Diethylamino)-N-(2,3-dimethylphenyl)acetamide Hydrochloride

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2-(Diethylamino)-N-(2,3-dimethylphenyl)acetamide Hydrochloride

Controlled Product

CAS:857170-72-0

Impurity Lidocaine EP impurity F Applications 2-(Diethylamino)-N-(2,3-dimethylphenyl)acetamide is an impurity of lidocaine (L397800), an long-acting, …

Formula:

C₁₄H₂₂N₂O·ClH

Color and Shape:

Neat

Molecular weight:

270.80

Ref: TR-D443745

250mg		316.00 €
2500mg		2,109.00 €

Estimated delivery in United States, on Friday 27 Dec 2024

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1-(3-Chlorophenyl)-2-hydroxy-1-propanone

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1-(3-Chlorophenyl)-2-hydroxy-1-propanone

Controlled Product

CAS:152943-33-4

Formula:

C₉H₉ClO₂

Color and Shape:

Neat

Molecular weight:

184.62

Ref: TR-C378500

10mg		250.00 €
100mg		1,885.00 €

Estimated delivery in United States, on Friday 27 Dec 2024

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1,2-Bismethylphenidate (Mixture of diastereomers)

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1,2-Bismethylphenidate (Mixture of diastereomers)

Controlled Product

Applications 1,2-Bismethylphenidate is an impurity of methylphenidate (M325880), an CNS stimulant. References Greenblatt, E.N., et …

Formula:

C₂₃H₂₇NO₄

Color and Shape:

Neat

Molecular weight:

381.46

Ref: TR-B583520

10mg		331.00 €
100mg		2,148.00 €

Estimated delivery in United States, on Friday 27 Dec 2024

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7,8-Dihydro-1-naphthalenol

CAS:51927-48-1

Stability Light Sensitive, Air (oxygen) Sensitive Applications 7,8-Dihydro-1-naphthalenol can be used as reagent/reactant in stereoselective …

Formula:

C₁₀H₁₀O

Color and Shape:

White To Light Yellow

Molecular weight:

146.19

Ref: TR-D451130

1g		1,521.00 €
50mg		123.00 €
250mg		467.00 €

Estimated delivery in United States, on Friday 27 Dec 2024

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N-[[2-[[[4-[[[(Hexyloxy)carbonyl]amino]carbonyl]phenyl]amino]methyl]-1-methyl-1H-benzimidazol-5-yl…

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N-[[2-[[[4-[[[(Hexyloxy)carbonyl]amino]carbonyl]phenyl]amino]methyl]-1-methyl-1H-benzimidazol-5-yl]carbonyl]-N-2-pyridinyl-beta-alanine Ethyl Ester

Controlled Product

CAS:1408238-40-3

Applications N-[[2-[[[4-[[[(Hexyloxy)carbonyl]amino]carbonyl]phenyl]amino]methyl]-1-methyl-1H-benzimidazol-5-yl]carbonyl]-N-2-pyridinyl-β-alanine ethyl ester can be used as reference standards and markers. It can also …

Formula:

C₃₄H₄₀N₆O₆

Color and Shape:

Off-White

Molecular weight:

628.72

Ref: TR-H298150

50mg		182.00 €
250mg		767.00 €
500mg		1,394.00 €

Estimated delivery in United States, on Friday 27 Dec 2024

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Venlafaxine N-Oxide

Controlled Product

CAS:1094598-37-4

Applications Venlafaxine N-Oxide is a prodrug of the antidepressant Venlafaxine ( V119995). References Bickel, M., …

Formula:

C₁₇H₂₇NO₃

Color and Shape:

Neat

Molecular weight:

293.40

Ref: TR-V120020

50mg		324.00 €
250mg		1,305.00 €
500mg		2,253.00 €

Estimated delivery in United States, on Friday 27 Dec 2024

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5-Chloro-N-methylthiophene-2-carboxamide

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5-Chloro-N-methylthiophene-2-carboxamide

Controlled Product

CAS:97799-98-9

Applications 5-Chloro-N-methylthiophene-2-carboxamide is an impurity of Rivaroxaban (R538000), which is a novel antithrombotic agent. A …

Formula:

C₆H₆ClNOS

Color and Shape:

Neat

Molecular weight:

175.64

Ref: TR-C373840

1g		252.00 €
10g		1,732.00 €

Estimated delivery in United States, on Friday 27 Dec 2024

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[[4-[[2-(1-Methylethoxy)ethoxy]methyl]phenoxy]methyl]oxirane

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[[4-[[2-(1-Methylethoxy)ethoxy]methyl]phenoxy]methyl]oxirane

Controlled Product

CAS:66722-57-4

Applications An intermediate for the synthesis of Bisoprolol. References Brodde, O., et al.: J. Cardiovasc …

Formula:

C₁₅H₂₂O₄

Color and Shape:

Neat

Molecular weight:

266.33

Ref: TR-M304765

25mg		224.00 €
250mg		1,585.00 €

Estimated delivery in United States, on Friday 27 Dec 2024

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Loxapine N-Oxide

CAS:25967-34-4

Stability Hygroscopic, Light Sensitive Applications Loxapine N-Oxide is a metabolite of Loxapine (L472750), a D2/D4-Dopamine …

Formula:

C₁₈H₁₈ClN₃O₂

Color and Shape:

Neat

Molecular weight:

343.81

Ref: TR-L472755

10mg		300.00 €
100mg		1,965.00 €

Estimated delivery in United States, on Friday 27 Dec 2024

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2,4-Dicyano-3-(2-methylpropyl)-pentanediamide (Mixture of Diastereomers)

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2,4-Dicyano-3-(2-methylpropyl)-pentanediamide (Mixture of Diastereomers)

Controlled Product

CAS:185815-56-9

Stability Hygrscopic Applications 2,4-Dicyano-3-(2-methylpropyl)-pentanediamide is an impurity of Pregabalin (P704800), a GABA (A602920) analogue used …

Formula:

C₁₁H₁₆N₄O₂

Color and Shape:

Neat

Molecular weight:

236.27

Ref: TR-D437780

1g		319.00 €
10g		2,118.00 €

Estimated delivery in United States, on Friday 27 Dec 2024

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1-Propyl Etodolac

Controlled Product

CAS:57816-83-8

Impurity Etodolac EP Impurity G Applications 1-Propyl Etodolac (Etodolac EP Impurity G) is an impurity …

Formula:

C₁₈H₂₃NO₃

Color and Shape:

Neat

Molecular weight:

301.38

Ref: TR-P835250

25mg		252.00 €
250mg		1,733.00 €

Estimated delivery in United States, on Friday 27 Dec 2024

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Flumazenil Carboxylic Acid

CAS:84378-44-9

Applications Flumazenil carboxylic acid is a derivative of Flumazenil (F500450), a benzodiazepine antagonist that can …

Formula:

C₁₃H₁₀FN₃O₃

Color and Shape:

White To Off-White

Molecular weight:

275.24

Ref: TR-F500455

10mg		328.00 €
100mg		2,211.00 €

Estimated delivery in United States, on Friday 27 Dec 2024

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(S)-Lisinopril Dimer

Controlled Product

CAS:1356839-89-8

Applications (S)-Lisinopril (L468985) impurity. Lisinopril Impurity G (Dimer Impurity)

Formula:

C₄₂H₆₀N₆O₉

Color and Shape:

White

Molecular weight:

792.96

Ref: TR-L469010

1mg		1,428.00 €
10mg		12,017.00 €
250µg		401.00 €

Estimated delivery in United States, on Friday 27 Dec 2024

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Magnesium Valproate

Controlled Product

CAS:62959-43-7

Applications Magnesium Valproate is an anticonvulsant agent and the effects it exerts are the result …

Formula:

C₁₆H₃₀MgO₄

Color and Shape:

White

Molecular weight:

310.71

Ref: TR-M110350

1g		313.00 €
10g		2,013.00 €

Estimated delivery in United States, on Friday 27 Dec 2024

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N-Desmethyl-benzotropine Hydrochloride

Controlled Product

CAS:25471-67-4

Applications N-Desmethyl-benzotropine Hydrochloride is an analog of Benzotropine (B207575, Mesylate salt) which is used as …

Formula:

C₂₀H₂₃NO·ClH

Color and Shape:

Off-White

Molecular weight:

329.86

Ref: TR-D291040

25mg		315.00 €
250mg		2,114.00 €

Estimated delivery in United States, on Friday 27 Dec 2024

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1,2,3,9-Tetrahydro-9-methyl-3-methylene-4H-carbazol-4-one

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1,2,3,9-Tetrahydro-9-methyl-3-methylene-4H-carbazol-4-one

Controlled Product

CAS:99614-64-9

Impurity Ondansetron EP Impurity D; Ondansetron USP Related Compound D Applications 1,2,3,9-Tetrahydro-9-methyl-3-methylene-4H-carbazol-4-one (Ondansetron EP Impurity …

Formula:

C₁₄H₁₃NO

Color and Shape:

White

Molecular weight:

211.26

Ref: TR-T293930

1g		310.00 €
10g		1,974.00 €

Estimated delivery in United States, on Friday 27 Dec 2024

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4-[4-(4-Chlorophenyl)-3,6-dihydro-1(2H)-pyridinyl]-1-(4-fluorophenyl)-1-butanone

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4-[4-(4-Chlorophenyl)-3,6-dihydro-1(2H)-pyridinyl]-1-(4-fluorophenyl)-1-butanone

CAS:52669-92-8

Applications 4-[4-(4-Chlorophenyl)-3,6-dihydro-1(2H)-pyridinyl]-1-(4-fluorophenyl)-1-butanone is a dehydrated metabolite of haloperidol that can be biotransfomed by humans to …

Formula:

C₂₁H₂₁ClFNO

Color and Shape:

Neat

Molecular weight:

357.85

Ref: TR-C376580

250mg		320.00 €
2500mg		2,114.00 €

Estimated delivery in United States, on Friday 27 Dec 2024

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6-Hydroxy-3,4-dihydro-1H-quinoline-2-one

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6-Hydroxy-3,4-dihydro-1H-quinoline-2-one

Controlled Product

CAS:54197-66-9

Impurity Cilostazol USP Related Compound A Applications A metabolite of Cilostazole. References Gitto, R., et …

Formula:

C₉H₉NO₂

Color and Shape:

Neat

Molecular weight:

163.17

Ref: TR-H941423

1g		117.00 €
10g		173.00 €

Estimated delivery in United States, on Friday 27 Dec 2024

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N-Desmethyl Ibandronate Sodium

Controlled Product

CAS:953805-81-7

Stability Very Hygroscopic Applications Ibandronate sodium (I120001) impurity. References Dunn, C., et al.: Drugs, 2001, …

Formula:

C₈H₂₀NO₇P₂·Na

Color and Shape:

White

Molecular weight:

327.18

Ref: TR-D291755

10mg		325.00 €
100mg		2,136.00 €

Estimated delivery in United States, on Friday 27 Dec 2024

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4-[4-[4-(Diphenylmethylene)-1-piperidinyl]-1-hydroxybutyl]-Alpha,Alpha-dimethyl-benzeneacetic Acid

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4-[4-[4-(Diphenylmethylene)-1-piperidinyl]-1-hydroxybutyl]-Alpha,Alpha-dimethyl-benzeneacetic Acid

CAS:1187954-57-9

Applications 4-[4-[4-(Diphenylmethylene)-1-piperidinyl]-1-hydroxybutyl]-α,α-dimethyl-benzeneacetic acid is an impurity of fexofenadine (F322490), the active metabolite of Terfenadine (T114500), …

Formula:

C₃₂H₃₇NO₃

Color and Shape:

Neat

Molecular weight:

483.64

Ref: TR-D492020

10mg		322.00 €
100mg		2,041.00 €

Estimated delivery in United States, on Friday 27 Dec 2024

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