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. 4176 products on this category.

Product data	Purity	Price range	Estimated delivery
Carfilzomib (2R,4R)-Diol REF: TR-C183525	- - -	252.00 €~3,433.00 €	Fri 13 Dec 24
Nortriptyline N-Ethyl Carbamate REF: TR-N836900CAS: 16234-88-1	- - -	321.00 €~2,109.00 €	Fri 13 Dec 24
7-Amino-3-[(5-methyl-1,3,4-thiadiazol-2-ylthio)methyl]-3-cephem-4-carboxylic Acid REF: TR-A618190CAS: 30246-33-4	- - -	246.00 €~3,462.00 €	Fri 13 Dec 24
Methyl 3-[[4-Chloro-2-(phenylamino)phenyl]methylamino]-3-oxopropanoate REF: TR-M295145CAS: 2089061-92-5	- - -	263.00 €~1,751.00 €	Fri 13 Dec 24
2-Amino-5-chlorobenzophenone REF: TR-A603490CAS: 719-59-5	- - -	213.00 €~527.00 €	Fri 13 Dec 24
N-(2,6-Dimethylphenyl)-1-piperazineacetamide REF: TR-D476950CAS: 5294-61-1	- - -	192.00 €~328.00 €	Fri 13 Dec 24
(+/-)-ortho-Cotinine REF: TR-C725050CAS: 147732-31-8	- - -	269.00 €~2,282.00 €	Fri 13 Dec 24
N-Phenylpropanamide REF: TR-P336060CAS: 620-71-3	- - -	194.00 €~660.00 €	Fri 13 Dec 24
(R)-De(carboxymethoxy) Cetirizine Acetic Acid REF: TR-D215500CAS: 942193-17-1	- - -	294.00 €~1,884.00 €	Fri 13 Dec 24
Delmadinone REF: TR-D230655CAS: 15262-77-8	- - -	315.00 €~2,109.00 €	Fri 13 Dec 24
N-Nitroso-N-methyl-DL-phenylalanine REF: TR-N529950CAS: 41867-08-7	- - -	248.00 €~1,639.00 €	Fri 13 Dec 24
5H-Dibenzo[a,d]cycloheptene REF: TR-D417055CAS: 256-81-5	- - -	316.00 €~2,050.00 €	Fri 13 Dec 24
Ipamorelin Acetate REF: TR-I739415CAS: 170851-70-4	- - -	97.00 €~644.00 €	Fri 13 Dec 24
Formoterol Fumarate(Mixture of Diastereomers) REF: TR-F693401CAS: 169375-55-7	- - -	260.00 €~1,755.00 €	Fri 13 Dec 24
Hexametazidine REF: TR-H291150CAS: 1257-19-8	- - -	315.00 €~2,114.00 €	Fri 13 Dec 24
5-Methyltetrahydrofolic Acid Calcium Salt Hydrate REF: TR-M330135CAS: 134-35-0 26560-38-3	- - -	316.00 €~2,101.00 €	Fri 13 Dec 24
D,L-N,N-Didesmethyl-N-(4-methoxyphenethyl) Venlafaxine REF: TR-D441150CAS: 1329795-88-1	- - -	309.00 €~1,999.00 €	Fri 13 Dec 24
4-Tolylsulfonamide REF: TR-T536630CAS: 70-55-3	- - -	94.00 €~107.00 €	Fri 13 Dec 24
5-Benzoyl-1,3-dihydro-2H-benzimidazol-2-one REF: TR-B208060CAS: 21472-33-3	- - -	264.00 €~1,755.00 €	Fri 13 Dec 24
Echinenone (Technical Grade) REF: TR-E325630CAS: 432-68-8	- - -	306.00 €~2,051.00 €	Fri 13 Dec 24

+ info

Carfilzomib (2R,4R)-Diol

Controlled Product

Applications Carfilzomib (2R,4R)-Diol is a derivative of Carflizomib (C183460), a second-generation proteasome inhibitor that is …

Formula:

C₄₀H₅₉N₅O₈

Color and Shape:

Neat

Molecular weight:

737.93

Ref: TR-C183525

10mg		3,433.00 €
500µg		252.00 €
2500µg		1,065.00 €

Estimated delivery in United States, on Friday 13 Dec 2024

+ info

+ info

Nortriptyline N-Ethyl Carbamate

CAS:16234-88-1

Applications Nortriptyline N-Ethyl Carbamate is an impurity in the synthesis of Nortriptyline Hydrochloride (N837000), a …

Formula:

C₂₂H₂₅NO₂

Color and Shape:

Neat

Molecular weight:

335.44

Ref: TR-N836900

1g		321.00 €
10g		2,109.00 €

Estimated delivery in United States, on Friday 13 Dec 2024

+ info

7-Amino-3-[(5-methyl-1,3,4-thiadiazol-2-ylthio)methyl]-3-cephem-4-carboxylic Acid

+ info

7-Amino-3-[(5-methyl-1,3,4-thiadiazol-2-ylthio)methyl]-3-cephem-4-carboxylic Acid

Controlled Product

CAS:30246-33-4

Impurity Cefazolin EP Impurity A Applications 7-Amino-3-[(5-methyl-1,3,4-thiadiazol-2-ylthio)methyl]-3-cephem-4-carboxylic Acid (Cefazolin EP Impurity A) is a substrate …

Formula:

C₁₁H₁₂N₄O₃S₃

Color and Shape:

Neat

Molecular weight:

344.43

Ref: TR-A618190

10mg		456.00 €
100mg		3,462.00 €
2500µg		246.00 €

Estimated delivery in United States, on Friday 13 Dec 2024

+ info

Methyl 3-[[4-Chloro-2-(phenylamino)phenyl]methylamino]-3-oxopropanoate

+ info

Methyl 3-[[4-Chloro-2-(phenylamino)phenyl]methylamino]-3-oxopropanoate

Controlled Product

CAS:2089061-92-5

Formula:

C₁₇H₁₇ClN₂O₃

Color and Shape:

Neat

Molecular weight:

332.78

Ref: TR-M295145

10mg		263.00 €
100mg		1,751.00 €

Estimated delivery in United States, on Friday 13 Dec 2024

+ info

+ info

2-Amino-5-chlorobenzophenone

Controlled Product

CAS:719-59-5

Applications A metabolite of Diazepam; but has a much weaker anticonvulsant effect. References Hara, T., …

Formula:

C₁₃H₁₀ClNO

Color and Shape:

Yellow

Molecular weight:

231.68

Ref: TR-A603490

5g		213.00 €
50g		527.00 €

Estimated delivery in United States, on Friday 13 Dec 2024

+ info

N-(2,6-Dimethylphenyl)-1-piperazineacetamide

+ info

N-(2,6-Dimethylphenyl)-1-piperazineacetamide

CAS:5294-61-1

Formula:

C₁₄H₂₁N₃O

Color and Shape:

Neat

Molecular weight:

247.34

Ref: TR-D476950

1g		192.00 €
10g		328.00 €

Estimated delivery in United States, on Friday 13 Dec 2024

+ info

+ info

(+/-)-ortho-Cotinine

Controlled Product

CAS:147732-31-8

Stability Light Sensitive Applications A metabolite of Nicotine in humans. Used for internal standardization for …

Formula:

C₁₀H₁₂N₂O

Color and Shape:

Neat

Molecular weight:

176.22

Ref: TR-C725050

5mg		269.00 €
10mg		342.00 €
100mg		2,282.00 €

Estimated delivery in United States, on Friday 13 Dec 2024

+ info

+ info

N-Phenylpropanamide

CAS:620-71-3

Applications A degradation product and potential biomarker of smoked Fentanyl (F274990) with toxic and analgesic …

Formula:

C₉H₁₁NO

Color and Shape:

Off-White

Molecular weight:

149.19

Ref: TR-P336060

1g		308.00 €
50mg		194.00 €
2500mg		660.00 €

Estimated delivery in United States, on Friday 13 Dec 2024

+ info

(R)-De(carboxymethoxy) Cetirizine Acetic Acid

+ info

(R)-De(carboxymethoxy) Cetirizine Acetic Acid

CAS:942193-17-1

Formula:

C₁₉H₂₁ClN₂O₂

Color and Shape:

White To Off-White

Molecular weight:

344.84

Ref: TR-D215500

50mg		294.00 €
500mg		1,884.00 €

Estimated delivery in United States, on Friday 13 Dec 2024

+ info

Delmadinone

Controlled Product

CAS:15262-77-8

Applications Progesterone with antiestrogen and antiandrogen activity. References Brown-Grant, K., et al.: J. Endocrinol., 38, …

Formula:

C₂₁H₂₅ClO₃

Color and Shape:

Neat

Molecular weight:

360.87

Ref: TR-D230655

10mg		315.00 €
100mg		2,109.00 €

Estimated delivery in United States, on Friday 13 Dec 2024

+ info

+ info

N-Nitroso-N-methyl-DL-phenylalanine

Controlled Product

CAS:41867-08-7

Formula:

C₁₀H₁₂N₂O₃

Color and Shape:

Neat

Molecular weight:

208.21

Ref: TR-N529950

10mg		248.00 €
100mg		1,639.00 €

Estimated delivery in United States, on Friday 13 Dec 2024

+ info

+ info

5H-Dibenzo[a,d]cycloheptene

Controlled Product

CAS:256-81-5

Stability Light Sensitive Applications 5H-Dibenzo[a,d]cycloheptene was used in the synthesis of cyclotribenzylenes. Also functions as …

Formula:

C₁₅H₁₂

Color and Shape:

Neat

Molecular weight:

192.26

Ref: TR-D417055

250mg		316.00 €
2500mg		2,050.00 €

Estimated delivery in United States, on Friday 13 Dec 2024

+ info

+ info

Ipamorelin Acetate

Controlled Product

CAS:170851-70-4

Applications Ipamorelin is a metabolite of growth hormone releasing peptides (GHRPs). Ipamorelin is a pentapeptide …

Formula:

C₃₈H₄₉N₉O₅x(C₂H₄O₂

Color and Shape:

Neat

Molecular weight:

711.856005

Ref: TR-I739415

5mg		97.00 €
25mg		224.00 €
100mg		644.00 €

Estimated delivery in United States, on Friday 13 Dec 2024

+ info

Formoterol Fumarate(Mixture of Diastereomers)

+ info

Formoterol Fumarate(Mixture of Diastereomers)

Controlled Product

CAS:169375-55-7

Applications Formoterol fumarate (mixture of diastereomers) is an impurity of Formoterol fumarate dihydrate (F693400). References …

Formula:

C₁₉H₂₄N₂O₄•C₄H₄O₄

Color and Shape:

Neat

Molecular weight:

326.433

Ref: TR-F693401

10mg		260.00 €
100mg		1,755.00 €

Estimated delivery in United States, on Friday 13 Dec 2024

+ info

Hexametazidine

Controlled Product

CAS:1257-19-8

Impurity Trimetazidine dihydrochloride EP impurity B Applications Hexametazidine is an impurity of Trimetazidine (T795610). Trimetazidine …

Formula:

C₂₄H₃₄N₂O₆

Color and Shape:

Neat

Molecular weight:

446.54

Ref: TR-H291150

250mg		315.00 €
2500mg		2,114.00 €

Estimated delivery in United States, on Friday 13 Dec 2024

+ info

5-Methyltetrahydrofolic Acid Calcium Salt Hydrate

+ info

5-Methyltetrahydrofolic Acid Calcium Salt Hydrate

Controlled Product

CAS:134-35-0 26560-38-3

Formula:

C₂₀H₂₃CaN₇O₆•xH₂O

Color and Shape:

White To Beige

Molecular weight:

497.52

Ref: TR-M330135

10mg		316.00 €
100mg		2,101.00 €

Estimated delivery in United States, on Friday 13 Dec 2024

+ info

D,L-N,N-Didesmethyl-N-(4-methoxyphenethyl) Venlafaxine

+ info

D,L-N,N-Didesmethyl-N-(4-methoxyphenethyl) Venlafaxine

Controlled Product

CAS:1329795-88-1

Impurity Venlafaxine EP Impurity H (BASE) Applications D,L-N,N-Didesmethyl-N-(4-methoxyphenethyl) Venlafaxine (Venlafaxine EP Impurity H (BASE)) is …

Formula:

C₂₄H₃₃NO₃

Color and Shape:

White

Molecular weight:

383.52

Ref: TR-D441150

10mg		309.00 €
100mg		1,999.00 €

Estimated delivery in United States, on Friday 13 Dec 2024

+ info

+ info

4-Tolylsulfonamide

Controlled Product

CAS:70-55-3

Applications 4-Tolylsulfonamide is a carbonic anhydrase inhibitor used the synthesis of antiglaucoma and anticancer drugs. …

Formula:

C₇H₉NO₂S

Color and Shape:

Neat

Molecular weight:

171.22

Ref: TR-T536630

1g		94.00 €
10g		107.00 €

Estimated delivery in United States, on Friday 13 Dec 2024

+ info

5-Benzoyl-1,3-dihydro-2H-benzimidazol-2-one

+ info

5-Benzoyl-1,3-dihydro-2H-benzimidazol-2-one

Controlled Product

CAS:21472-33-3

Applications This compound contains a benzimidazolone moiety which has been seen to inhibit p38 MAP …

Formula:

C₁₄H₁₀N₂O₂

Color and Shape:

Neat

Molecular weight:

238.24

Ref: TR-B208060

1g		264.00 €
10g		1,755.00 €

Estimated delivery in United States, on Friday 13 Dec 2024

+ info

+ info

Echinenone (Technical Grade)

CAS:432-68-8

Stability Light Sensitive, Temperature Sensitive Applications Echinenone is a protective carotenoid. Echinenone is an analogue …

Formula:

C₄₀H₅₄O

Color and Shape:

Neat

Molecular weight:

550.86

Ref: TR-E325630

5mg		2,051.00 €
500µg		306.00 €

Estimated delivery in United States, on Friday 13 Dec 2024

+ info