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
AMPA receptor modulator-1 REF: TM-T10307CAS: 2036074-41-4	98.82%	113.00 €~1,052.00 €	Wed 26 Feb 25
Pregnanolone sulfate (pyridinium) REF: TM-T81409CAS: 124107-39-7	98%	To inquire	Wed 26 Feb 25
LSP-GR3 REF: TM-T81912CAS: 1235945-37-5	98%	To inquire	Wed 26 Feb 25
4-[(2RS)-2-Hydroxy-3-[(1-methylethyl)amino]propoxy]-benzaldehyde hydrochloride REF: 3D-IH171121CAS: 1956321-87-1	Min. 95%	924.00 €~4,058.00 €	Wed 05 Mar 25
Sumatriptan 3-hydroxy-2-oxo impurity REF: 3D-IS183410CAS: 2250254-19-2	Min. 95%	734.00 €~8,697.00 €	Wed 05 Mar 25
7'-Methyl-2'-propyl-2,5'-bi-1H-benzimidazole REF: 3D-IM25660CAS: 884330-09-0	Min. 95%	136.00 €~466.00 €	Wed 05 Mar 25
Chlorthalidone impurity E REF: 3D-IC76330CAS: 82875-49-8	Min. 95%	189.00 €~1,102.00 €	Wed 05 Mar 25
cis-Tadalafil REF: 3D-FT27987CAS: 171596-27-3	Min. 95%	104.00 €~1,160.00 €	Wed 05 Mar 25
Desfluoro ciprofloxacin hydrochloride REF: 3D-ID58177CAS: 93107-11-0	Min. 95%	141.00 €~667.00 €	Wed 05 Mar 25
Desogestrel Related Compound A REF: 3D-ID171690CAS: 201360-82-9	Min. 95%	2,887.00 €	Wed 05 Mar 25
Sitagliptin impurity E REF: 3D-FO103288CAS: 823817-56-7	Min. 95%	47.00 €~4,058.00 €	Wed 05 Mar 25
1-(6-Chloro-9H-carbazol-2-yl)ethanone REF: 3D-IC20177CAS: 92841-22-0	Min. 95%	325.00 €~1,160.00 €	Wed 05 Mar 25
Pidotimod diketopiperazine-6-propanoic acid REF: 3D-IP27041CAS: 161771-75-1	Min. 95%	To inquire	Wed 05 Mar 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 €	Wed 19 Mar 25
Atorvastatin calcium trihydrate EP Impurity G REF: 3D-IA182820CAS: 887324-53-0	Min. 95%	251.00 €~10,434.00 €	Wed 19 Mar 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 19 Mar 25
2-Amino-5,6-dichloro-3(4H)-quinazoline acetic acid REF: 3D-IA17597CAS: 1159977-03-3	Min. 95%	To inquire	Wed 19 Mar 25
13-O-Desmethyl tacrolimus REF: 3D-ID161984CAS: 139958-51-3	90%Min	341.00 €~1,971.00 €	Wed 19 Mar 25
(RS)-AMPA hydrochloride REF: TM-T200780CAS: 2922283-04-1	- - -	To inquire	Wed 26 Mar 25
BDZ-g REF: TM-T62042CAS: 732278-52-3	98.77%	78.00 €~1,052.00 €	Wed 26 Mar 25

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AMPA receptor modulator-1

CAS:2036074-41-4

AMPA receptor modulator-1 can be activated by glutamate, thereby modulating ion channels.

Formula:

C₁₆H₁₁ClF₃NO₂

Purity:

98.82%

Color and Shape:

Solid

Molecular weight:

341.71

Ref: TM-T10307

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

Estimated delivery in United States, on Wednesday 26 Feb 2025

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Pregnanolone sulfate (pyridinium)

CAS:124107-39-7

Pregnanolone sulfate pyridinium, an endogenous neurosteroid, inhibits NMDA receptors and exhibits neuroprotective properties [1].

Formula:

C₂₆H₃₉NO₅S

Purity:

98%

Color and Shape:

Liquid

Molecular weight:

477.66

Ref: TM-T81409

5mg		To inquire
50mg		To inquire

Estimated delivery in United States, on Wednesday 26 Feb 2025

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LSP-GR3

CAS:1235945-37-5

LSP-GR3, a novel splice modulating oligomer (SMO) consisting of chemically-modified RNA oligonucleotides, potently and specifically …

Formula:

C₁₃H₂₅N₇O₅

Purity:

98%

Color and Shape:

Liquid

Molecular weight:

359.38

Ref: TM-T81912

5mg		To inquire
50mg		To inquire

Estimated delivery in United States, on Wednesday 26 Feb 2025

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4-[(2RS)-2-Hydroxy-3-[(1-methylethyl)amino]propoxy]-benzaldehyde hydrochloride

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4-[(2RS)-2-Hydroxy-3-[(1-methylethyl)amino]propoxy]-benzaldehyde hydrochloride

CAS:1956321-87-1

4-[(2RS)-2-Hydroxy-3-[(1-methylethyl)amino]propoxy]-benzaldehyde hydrochloride is a drug product. It is used as an analytical standard and in …

Formula:

C₁₃H₂₀ClNO₃

Purity:

Min. 95%

Molecular weight:

273.76 g/mol

Ref: 3D-IH171121

1g		3,246.00 €
2g		4,058.00 €
100mg		924.00 €
250mg		1,449.00 €
500mg		2,319.00 €

Estimated delivery in United States, on Wednesday 5 Mar 2025

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Sumatriptan 3-hydroxy-2-oxo impurity

CAS:2250254-19-2

Please enquire for more information about Sumatriptan 3-hydroxy-2-oxo impurity including the price, delivery time and …

Formula:

C₁₄H₂₁N₃O₄S

Purity:

Min. 95%

Molecular weight:

327.4 g/mol

Ref: 3D-IS183410

50mg		3,188.00 €
100mg		4,638.00 €
250mg		6,956.00 €
500mg		8,697.00 €

Estimated delivery in United States, on Wednesday 5 Mar 2025

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

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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 Wednesday 5 Mar 2025

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Chlorthalidone impurity E

CAS:82875-49-8

Chlorthalidone impurity E is an analytical standard for the HPLC analysis of chlorthalidone in pharmaceutical …

Formula:

C₁₄H₁₁ClN₂O₃S

Purity:

Min. 95%

Molecular weight:

322.77 g/mol

Ref: 3D-IC76330

1mg		189.00 €
2mg		263.00 €
5mg		472.00 €
10mg		647.00 €
25mg		1,102.00 €

Estimated delivery in United States, on Wednesday 5 Mar 2025

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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 Wednesday 5 Mar 2025

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Desfluoro ciprofloxacin hydrochloride

CAS:93107-11-0

Fluoroquinolones are a class of antibiotics that are used to treat bacterial infections. Desfluoro ciprofloxacin …

Formula:

C₁₇H₁₉N₃O₃·HCl

Purity:

Min. 95%

Color and Shape:

Off-White Powder

Molecular weight:

349.81 g/mol

Ref: 3D-ID58177

1mg		141.00 €
2mg		175.00 €
5mg		278.00 €
10mg		389.00 €
25mg		667.00 €

Estimated delivery in United States, on Wednesday 5 Mar 2025

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Desogestrel Related Compound A

CAS:201360-82-9

Desogestrel Related Compound A is a synthetic impurity standard. It is the metabolite of desogestrel, …

Formula:

C₂₂H₃₀O

Purity:

Min. 95%

Color and Shape:

Powder

Molecular weight:

310.47 g/mol

Ref: 3D-ID171690

15mg 2,887.00 €

Estimated delivery in United States, on Wednesday 5 Mar 2025

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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 Wednesday 5 Mar 2025

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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 Wednesday 5 Mar 2025

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Pidotimod diketopiperazine-6-propanoic acid

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Pidotimod diketopiperazine-6-propanoic acid

CAS:161771-75-1

Pidotimod is an impurity in the drug product, which is a synthetic diketopiperazine-6-propanoic acid. Pidotimod …

Formula:

C₉H₁₂N₂O₄S

Purity:

Min. 95%

Molecular weight:

244.27 g/mol

Ref: 3D-IP27041

50mg		To inquire
100mg		To inquire
200mg		To inquire

Estimated delivery in United States, on Wednesday 5 Mar 2025

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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 19 Mar 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 19 Mar 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 19 Mar 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 19 Mar 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 19 Mar 2025

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(RS)-AMPA hydrochloride

CAS:2922283-04-1

(RS)-AMPA ((±)-AMPA) hydrochloride is a glutamate analog and serves as an efficient selective agonist for …

Formula:

C₇H₁₁ClN₂O₄

Color and Shape:

Liquid

Molecular weight:

222.63

Ref: TM-T200780

10mg		To inquire
50mg		To inquire

Estimated delivery in United States, on Wednesday 26 Mar 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:

Liquid

Molecular weight:

407.49

Ref: TM-T62042

1mg		78.00 €
5mg		160.00 €
10mg		227.00 €
25mg		341.00 €
50mg		477.00 €
100mg		1,052.00 €
1mL*10mM (DMSO)		169.00 €

Estimated delivery in United States, on Wednesday 26 Mar 2025

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