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
cis-Tadalafil REF: 3D-FT27987CAS: 171596-27-3	Min. 95%	104.00 €~1,160.00 €	Fri 27 Dec 24
1-(6-Chloro-9H-carbazol-2-yl)ethanone REF: 3D-IC20177CAS: 92841-22-0	Min. 95%	325.00 €~1,160.00 €	Fri 27 Dec 24
Sitagliptin impurity E REF: 3D-FO103288CAS: 823817-56-7	Min. 95%	47.00 €~4,058.00 €	Fri 27 Dec 24
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 €	Wed 08 Jan 25
13-O-Desmethyl tacrolimus REF: 3D-ID161984CAS: 139958-51-3	90%Min	341.00 €~1,971.00 €	Wed 08 Jan 25
2-Amino-5,6-dichloro-3(4H)-quinazoline acetic acid REF: 3D-IA17597CAS: 1159977-03-3	Min. 95%	To inquire	Wed 08 Jan 25
Atorvastatin calcium trihydrate EP Impurity G REF: 3D-IA182820CAS: 887324-53-0	Min. 95%	251.00 €~10,434.00 €	Wed 08 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	Wed 08 Jan 25
(RS)-AMPA REF: TM-T16800CAS: 77521-29-0	98%	2,301.00 €~6,521.00 €	Wed 15 Jan 25
BDZ-g REF: TM-T62042CAS: 732278-52-3	98.77%	113.00 €~1,052.00 €	Wed 15 Jan 25
Doxorubicin Dimer Impurity-1 REF: 3D-ID176588	Min. 95%	5,101.00 €~9,042.00 €	Wed 19 Feb 25
Cyclizine Related Compound A (1-methylpiperazine) REF: 45-1154015CAS: 109-01-3	- - -	- - -	Discontinued product
Eprosartan Related Compound E (4-(hydroxymethyl)benzoic acid) (DISCONTINUED) REF: 45-1238262CAS: 3006-96-0	- - -	- - -	Discontinued product
Modafinil Related Compound B (2-[(diphenylmethyl)sulfonyl]acetamide) (DISCONTINUED) REF: 45-1445357CAS: 118779-53-6	- - -	- - -	Discontinued product
Nisoldipine Related Compound E (3-Isobutyl 5-methyl 2,6-dimethyl-4-(2-nitrosophenyl)pyridine-3,5-dicarboxylate) (DISCONTINUED) REF: 45-1464169CAS: 87375-91-5	- - -	- - -	Discontinued product
2-Ethylhexan-1-ol (DISCONTINUED) REF: 45-1265526CAS: 104-76-7	- - -	- - -	Discontinued product
Drometrizole Trisiloxane Related Compound D (2-(2H-Benzotriazol-2-yl)-6-isobutyl-p-cresol) (DISCONTINUED) REF: 45-1228053	- - -	- - -	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
Rabeprazole Related Compound A (Disodium 1-benzimidazol-2-yl-3-methyl-4-oxo-1,4-dihydropyridine-2-carboxylate) REF: 45-1598020	- - -	- - -	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

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cis-Tadalafil

CAS:171596-27-3

Cis-Tadalafil is a potent inhibitor of phosphodiesterase 5, which is used to treat erectile dysfunction …

Formula:

C₂₂H₁₉N₃O₄

Purity:

Min. 95%

Color and Shape:

White/Off-White Solid

Molecular weight:

389.4 g/mol

Ref: 3D-FT27987

10mg		194.00 €
25mg		363.00 €
50mg		518.00 €
100mg		739.00 €
250mg		1,160.00 €

Estimated delivery in United States, on Friday 27 Dec 2024

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1-(6-Chloro-9H-carbazol-2-yl)ethanone

CAS:92841-22-0

1-(6-Chloro-9H-carbazol-2-yl)ethanone is a chemical substance that belongs to the class of synthetic drugs. It is …

Formula:

C₁₄H₁₀ClNO

Purity:

Min. 95%

Molecular weight:

243.69 g/mol

Ref: 3D-IC20177

1mg		325.00 €
2mg		407.00 €
5mg		582.00 €
10mg		740.00 €
25mg		1,160.00 €

Estimated delivery in United States, on Friday 27 Dec 2024

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Sitagliptin impurity E

CAS:823817-56-7

Sitagliptin impurity E is an inhibitor of dipeptidyl peptidase-4 (DPP-IV) that is used as a …

Formula:

C₁₆H₁₅F₆N₅O

Purity:

Min. 95%

Molecular weight:

407.31 g/mol

Ref: 3D-FO103288

1g		3,246.00 €
2g		3,478.00 €
5g		3,768.00 €
10g		4,058.00 €

Estimated delivery in United States, on Friday 27 Dec 2024

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

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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 Wednesday 8 Jan 2025

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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 Wednesday 8 Jan 2025

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

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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 Wednesday 8 Jan 2025

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Atorvastatin calcium trihydrate EP Impurity G

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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 Wednesday 8 Jan 2025

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

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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 Wednesday 8 Jan 2025

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(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 Wednesday 15 Jan 2025

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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 Wednesday 15 Jan 2025

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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 €

Discontinued product

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Drometrizole Trisiloxane Related Compound D (2-(2H-Benzotriazol-2-yl)-6-isobutyl-p-cresol) (DISCONTINUED)

Aromatic or modified aromatic drugs with nitrogen heter

Formula:

C₁₇H₁₉N₃O

Color and Shape:

Pale Yellow Powder

Molecular weight:

281.35

Ref: 45-1228053

25mg Discontinued Request information

Discontinued product

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

CAS:103026-83-1