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. 6775 products on this category.

Product data	Purity	Price range	Estimated delivery
7'-Methyl-2'-propyl-2,5'-bi-1H-benzimidazole REF: 3D-IM25660CAS: 884330-09-0	Min. 95%	136.00 €~466.00 €	Fri 27 Dec 24
Atorvastatin calcium trihydrate EP Impurity G REF: 3D-IA182820CAS: 887324-53-0	Min. 95%	251.00 €~10,434.00 €	Tue 07 Jan 25
11,11'-(1,4-Piperazinediyl)bis-dibenzo[b,f][1,4]thiazepine REF: 3D-IP27362CAS: 945668-94-0	Min. 95%	97.00 €~5,628.00 €	Tue 07 Jan 25
13-O-Desmethyl tacrolimus REF: 3D-ID161984CAS: 139958-51-3	90%Min	341.00 €~1,971.00 €	Tue 07 Jan 25
4-Hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxamide 1,1-dioxide REF: 3D-IH21390CAS: 24683-25-8	Min. 95%	To inquire	Tue 07 Jan 25
2-Amino-5,6-dichloro-3(4H)-quinazoline acetic acid REF: 3D-IA17597CAS: 1159977-03-3	Min. 95%	To inquire	Tue 07 Jan 25
BDZ-g REF: TM-T62042CAS: 732278-52-3	98.77%	113.00 €~1,052.00 €	Tue 14 Jan 25
(RS)-AMPA REF: TM-T16800CAS: 77521-29-0	98%	2,301.00 €~6,521.00 €	Tue 14 Jan 25
Doxorubicin Dimer Impurity-1 REF: 3D-ID176588	Min. 95%	5,101.00 €~9,042.00 €	Tue 18 Feb 25
Iscotrizinol Related Compound G (2-Ethylhexyl 4-{4-[(4-{[4-(tert-butylcarbamoyl)phenyl]amino}-6-[(4-{[(2-ethylhexyl)oxy]carbonyl}phenyl)amino]-1,3,5-triazin-2-yl)amino]benzamido}benzoate) (DISCONTINUED) REF: 45-1193425	- - -	- - -	Discontinued product
Ethylhexyl Triazone Related Compound C (Bis(2-ethylhexyl) 4,4'-[(6-{[4-(ethoxycarbonyl)phenyl]amino}-1,3,5-triazine-2,4-diyl)bis(azanediyl)]dibenzoate) (DISCONTINUED) REF: 45-1265560	- - -	- - -	Discontinued product
Ioversol Related Compound A (5-Amino-N,N'-bis(2,3-dihydroxypropyl)-2,4,6-triiodoisophthalamide) (DISCONTINUED) REF: 45-1345115CAS: 76801-93-9	- - -	- - -	Discontinued product
Iloperidone Related Compound A ([4'-(3-Chloropropoxy)-3'-methoxy]acetophenone) (DISCONTINUED) REF: 45-1336250CAS: 58113-30-7	- - -	- - -	Discontinued product
Lorazepam Related Compound B (2-Amino-2',5-dichlorobenzophenone) REF: 45-1370338CAS: 2958-36-3	- - -	- - -	Discontinued product
Sulfamethazine Related Compound A (4-Amino-N-carbamimidoylbenzenesulfonamide-, monohydrate) (DISCONTINUED) REF: 45-1629019CAS: 6190-55-2	- - -	- - -	Discontinued product
Iscotrizinol Related Compound D (2-Ethylhexyl 4-[(4,6-bis{[4-(tert-butylcarbamoyl)phenyl]amino}-1,3,5-triazin-2-yl)amino]benzoate) (DISCONTINUED) REF: 45-1193390	- - -	- - -	Discontinued product
Ticagrelor R,R,S,R-Isomer REF: 45-1666980CAS: 2096989-55-6	- - -	- - -	Discontinued product
Drometrizole Trisiloxane Related Compound A (2-(2H-Benzotriazol-2-yl)-6-(isobuten-1-yl)-p-cresol) (DISCONTINUED) REF: 45-1228029CAS: 2170-37-8	- - -	- - -	Discontinued product
Nisoldipine Related Compound D (3-Isobutyl 5-methyl 2,6-dimethyl-4-(2-nitrophenyl)pyridine-3,5-dicarboxylate) (DISCONTINUED) REF: 45-1464158CAS: 103026-83-1	- - -	- - -	Discontinued product
Nisoldipine Related Compound G (Diisobutyl 2,6-dimethyl-4-(2-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate) (DISCONTINUED) REF: 45-1464183CAS: 2226462-71-9	- - -	- - -	Discontinued product

7'-Methyl-2'-propyl-2,5'-bi-1H-benzimidazole

+ info

7'-Methyl-2'-propyl-2,5'-bi-1H-benzimidazole

CAS:884330-09-0

7'-Methyl-2'-propyl-2,5'-bi-1H-benzimidazole (7'-MPB) is a benzimidazole derivative that is used as a medicine. It is made …

Formula:

C₁₈H₁₈N₄

Purity:

Min. 95%

Molecular weight:

290.36 g/mol

Ref: 3D-IM25660

25mg		136.00 €
50mg		138.00 €
100mg		186.00 €
250mg		345.00 €
500mg		466.00 €

Estimated delivery in United States, on Friday 27 Dec 2024

+ info

Atorvastatin calcium trihydrate EP Impurity G

+ info

Atorvastatin calcium trihydrate EP Impurity G

CAS:887324-53-0

Atorvastatin is a drug that belongs to the class of statins. It is used for …

Formula:

C₃₄H₃₇FN₂O₅

Purity:

Min. 95%

Color and Shape:

Powder

Molecular weight:

572.67 g/mol

Ref: 3D-IA182820

25mg		2,319.00 €
50mg		3,710.00 €
100mg		6,955.00 €
250mg		10,434.00 €

Estimated delivery in United States, on Tuesday 7 Jan 2025

+ info

11,11'-(1,4-Piperazinediyl)bis-dibenzo[b,f][1,4]thiazepine

+ info

11,11'-(1,4-Piperazinediyl)bis-dibenzo[b,f][1,4]thiazepine

CAS:945668-94-0

11,11'-(1,4-Piperazinediyl)bis-dibenzo[b,f][1,4]thiazepine is a molecule that inhibits the replication of DNA and RNA in viruses. The …

Formula:

C₃₀H₂₄N₄S₂

Purity:

Min. 95%

Color and Shape:

Yellow Solid

Molecular weight:

504.67 g/mol

Ref: 3D-IP27362

5g		2,324.00 €
10g		3,251.00 €
25g		5,628.00 €

Estimated delivery in United States, on Tuesday 7 Jan 2025

+ info

+ info

13-O-Desmethyl tacrolimus

CAS:139958-51-3

Tacrolimus is a macrolide immunosuppressant that is used to prevent organ rejection in transplant patients. …

Formula:

C₄₃H₆₇NO₁₂

Purity:

90%Min

Color and Shape:

Powder

Molecular weight:

789.99 g/mol

Ref: 3D-ID161984

1mg		341.00 €
2mg		453.00 €
5mg		711.00 €
10mg		1,047.00 €
25mg		1,971.00 €

Estimated delivery in United States, on Tuesday 7 Jan 2025

+ info

4-Hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxamide 1,1-dioxide

+ info

4-Hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxamide 1,1-dioxide

CAS:24683-25-8

This is a white crystalline compound that has been shown to be effective against glutamic …

Formula:

C₁₀H₁₀N₂O₄S

Purity:

Min. 95%

Molecular weight:

254.26 g/mol

Ref: 3D-IH21390

10mg		To inquire
25mg		To inquire
50mg		To inquire

Estimated delivery in United States, on Tuesday 7 Jan 2025

+ info

2-Amino-5,6-dichloro-3(4H)-quinazoline acetic acid

+ info

2-Amino-5,6-dichloro-3(4H)-quinazoline acetic acid

CAS:1159977-03-3

This is a synthetic, impurity standard for 2-Amino-5,6-dichloro-3-(4H)-quinazoline acetic acid (CAS No. 1159977-03-3) that can …

Formula:

C₁₀H₉Cl₂N₃O₂

Purity:

Min. 95%

Molecular weight:

274.1 g/mol

Ref: 3D-IA17597

25mg		1,739.00 €
50mg		2,898.00 €

Estimated delivery in United States, on Tuesday 7 Jan 2025

+ info

BDZ-g

CAS:732278-52-3

BDZ-g: potent, selective AMPA receptor antagonist; useful for researching neurological disorders.

Formula:

C₂₁H₂₁N₅O₂S

Purity:

98.77%

Color and Shape:

Solid

Molecular weight:

407.49

Ref: TM-T62042

1mg		113.00 €
1ml		276.00 €
5mg		250.00 €
10mg		367.00 €
25mg		551.00 €
50mg		771.00 €
100mg		1,052.00 €

Estimated delivery in United States, on Tuesday 14 Jan 2025

+ info

(RS)-AMPA

CAS:77521-29-0

(RS)-AMPA ((±)-AMPA) is a glutamate analog. (RS)-AMPA is an agonist of effective and selective excitatory …

Formula:

C₇H₁₀N₂O₄

Purity:

98%

Color and Shape:

Solid

Molecular weight:

186.17

Ref: TM-T16800

25mg		3,497.00 €
50mg		4,639.00 €
100mg		6,521.00 €

Estimated delivery in United States, on Tuesday 14 Jan 2025

+ info

+ info

Doxorubicin Dimer Impurity-1

Doxorubicin Dimer Impurity-1 is a drug product that is used as an HPLC standard. It …

Formula:

C₅₄H₅₆N₂O₂₁

Purity:

Min. 95%

Molecular weight:

1,069.02 g/mol

Ref: 3D-ID176588

10mg		5,101.00 €
25mg		9,042.00 €

Estimated delivery in United States, on Tuesday 18 Feb 2025

+ info

Iscotrizinol Related Compound G (2-Ethylhexyl 4-{4-[(4-{[4-(tert-butylcarbamoyl)phenyl]amino}-6-[(4-{[(2-ethylhexyl)oxy]carbonyl}phenyl)amino]-1,3,5-triazin-2-yl)amino]benzamido}benzoate) (DISCONTINUED)

Compounds (excluding melamine) containing an unfused triazine ring (whether or not hydrogenated) in the structure

Formula:

C₅₁H₆₄N₈O₆

Color and Shape:

Powder

Molecular weight:

884.49488

Ref: 45-1193425

25mg Discontinued Request information

Discontinued product

+ info

Ethylhexyl Triazone Related Compound C (Bis(2-ethylhexyl) 4,4'-[(6-{[4-(ethoxycarbonyl)phenyl]amino}-1,3,5-triazine-2,4-diyl)bis(azanediyl)]dibenzoate) (DISCONTINUED)

Compounds (excluding melamine) containing an unfused triazine ring (whether or not hydrogenated) in the structure

Formula:

C₄₂H₅₄N₆O₆

Color and Shape:

Powder

Molecular weight:

738.91

Ref: 45-1265560

20mg Discontinued Request information

Discontinued product

+ info

Ioversol Related Compound A (5-Amino-N,N'-bis(2,3-dihydroxypropyl)-2,4,6-triiodoisophthalamide) (DISCONTINUED)

CAS:76801-93-9

Aromatic cyclic amides (including cyclic carbamates) and their derivatives; salts thereof

Formula:

C₁₄H₁₈I₃N₃O₆

Color and Shape:

Off-White Tan Crystalline Powder

Molecular weight:

704.83298

Ref: 45-1345115

50mg Discontinued Request information

Discontinued product

+ info

Iloperidone Related Compound A ([4'-(3-Chloropropoxy)-3'-methoxy]acetophenone) (DISCONTINUED)

CAS:58113-30-7

Halogenated, sulfonated, nitrated or nitrosated derivatives: chlordecone (iso)

Formula:

C₁₂H₁₅ClO₃

Color and Shape:

Powder

Molecular weight:

242.07097

Ref: 45-1336250

20mg Discontinued Request information

Discontinued product

+ info

Lorazepam Related Compound B (2-Amino-2',5-dichlorobenzophenone)

CAS:2958-36-3

Amino-aldehydes, amino-ketones and amino-quinones, other than those containing more than one kind of oxygen function; …

Formula:

C₁₃H₉Cl₂NO

Color and Shape:

Yellow Crystalline Powder

Molecular weight:

265.00612

Ref: 45-1370338

25mg Discontinued Request information

Discontinued product

+ info

Sulfamethazine Related Compound A (4-Amino-N-carbamimidoylbenzenesulfonamide-, monohydrate) (DISCONTINUED)

CAS:6190-55-2

Sulfonamides, nesoi

Formula:

C₇H₁₀N₄O₂S·H₂O

Color and Shape:

White Powder

Molecular weight:

232.06301

Ref: 45-1629019

100mg Discontinued Request information

Discontinued product

+ info

Iscotrizinol Related Compound D (2-Ethylhexyl 4-[(4,6-bis{[4-(tert-butylcarbamoyl)phenyl]amino}-1,3,5-triazin-2-yl)amino]benzoate) (DISCONTINUED)

Compounds (excluding melamine) containing an unfused triazine ring (whether or not hydrogenated) in the structure

Formula:

C₄₀H₅₂N₈O₄

Color and Shape:

White Powder

Molecular weight:

708.41115

Ref: 45-1193390

25mg Discontinued Request information

Discontinued product

+ info

Ticagrelor R,R,S,R-Isomer

CAS:2096989-55-6

Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, …

Formula:

C₂₃H₂₈F₂N₆O₄S

Molecular weight:

522.18608

Ref: 45-1666980

Undefined size Discontinued Request information

Discontinued product

+ info

Drometrizole Trisiloxane Related Compound A (2-(2H-Benzotriazol-2-yl)-6-(isobuten-1-yl)-p-cresol) (DISCONTINUED)

CAS:2170-37-8

Aromatic or modified aromatic drugs with nitrogen heter

Formula:

C₁₇H₁₇N₃O

Color and Shape:

Yellow Powder

Molecular weight:

279.13716

Ref: 45-1228029

25mg Discontinued Request information

Discontinued product

+ info

Nisoldipine Related Compound D (3-Isobutyl 5-methyl 2,6-dimethyl-4-(2-nitrophenyl)pyridine-3,5-dicarboxylate) (DISCONTINUED)

CAS:103026-83-1

Compounds containing an unfused pyridine ring in the structure, nesoi

Formula:

C₂₀H₂₂N₂O₆

Color and Shape:

Pale Yellow Solid

Molecular weight:

386.14779

Ref: 45-1464158

30mg Discontinued Request information

Discontinued product

+ info

Nisoldipine Related Compound G (Diisobutyl 2,6-dimethyl-4-(2-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate) (DISCONTINUED)

CAS:2226462-71-9

Compounds containing an unfused pyridine ring in the structure, nesoi

Formula:

C₂₃H₃₀N₂O₆

Color and Shape:

Yellow Powder

Molecular weight:

430.21039

Ref: 45-1464183

30mg Discontinued Request information

Discontinued product

+ info