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. 6617 products on this category.

Product data	Purity	Price range	Estimated delivery
3-Methoxy-p-tyramine Hydrochloride REF: TR-M332320CAS: 1477-68-5	- - -	116.00 €~299.00 €	Mon 28 Oct 24
Fulvestrant 3-Sulfate Sodium Salt REF: TR-F862520CAS: 403656-83-7	- - -	381.00 €~2,618.00 €	Mon 28 Oct 24
4-Acetaminophen-d3 Sulfate Potassium Salt REF: TR-A161232CAS: 1188263-45-7	- - -	260.00 €~1,726.00 €	Mon 28 Oct 24
Dimethylamine Hydrochloride REF: TR-D446730CAS: 506-59-2	- - -	93.00 €~132.00 €	Mon 28 Oct 24
3-(Formylamino)-1H-pyrazole-4-carboxamide REF: TR-F696750CAS: 22407-20-1	- - -	313.00 €~2,011.00 €	Mon 28 Oct 24
cis-Terbinafine Hydrochloride REF: TR-T107490CAS: 176168-78-8	- - -	356.00 €~2,482.00 €	Mon 28 Oct 24
Methyl 12-Ketostearate REF: TR-M315090CAS: 2380-27-0	- - -	201.00 €~1,144.00 €	Mon 28 Oct 24
Glycidol-d5 REF: TR-G615702CAS: 1246819-20-4	- - -	193.00 €~1,204.00 €	Mon 28 Oct 24
(S)-Tenofovir Disoproxil Fumarate REF: TR-T018506CAS: 1432630-26-6	- - -	309.00 €~2,017.00 €	Mon 28 Oct 24
N-Piperacillinyl Ampicillin REF: TR-P479960CAS: 65772-67-0	- - -	315.00 €~2,109.00 €	Mon 28 Oct 24
rac 1,2-Bis-palmitoyl-3-chloropropanediol-D5 REF: TR-B515202CAS: 1185057-55-9	- - -	248.00 €~2,215.00 €	Mon 28 Oct 24
Phorate Oxon REF: TR-P353510CAS: 2600-69-3	- - -	325.00 €~2,139.00 €	Mon 28 Oct 24
2-Methyl-∆1-megestrol Acetate (Megestrol Acetate Impurity) REF: TR-M320260	- - -	247.00 €~1,635.00 €	Mon 28 Oct 24
(2a)-Methyl Megestrol Acetate REF: TR-M320240CAS: 907193-65-1	- - -	317.00 €~2,049.00 €	Mon 28 Oct 24
3-Ethoxy-androsta-3,5-dien-17-one REF: TR-E890453CAS: 972-46-3	- - -	228.00 €~371.00 €	Mon 28 Oct 24
1-[[2'-(Aminocarbonyl)[1,1'-biphenyl]-4-yl]methyl]-2-ethoxy-1H-benzimidazole-7-carboxylic Acid Methyl Ester REF: TR-A147405CAS: 147404-76-0	- - -	281.00 €~1,662.00 €	Mon 28 Oct 24
Tauro 6-Ethlchenodeoxycholic Acid-d5 Sodium SaltREPLACES E917463. REF: TR-T009027CAS: 863239-61-6	- - -	366.00 €~2,534.00 €	Mon 28 Oct 24
Anagrelide Hydrochloride REF: TR-A637300CAS: 58579-51-4	- - -	93.00 €~673.00 €	Mon 28 Oct 24
Hydroxy Saxagliptin REF: TR-H953465CAS: 841302-24-7	- - -	345.00 €~1,747.00 €	Mon 28 Oct 24
N-Methyl Naltrexone Bromide REF: TR-M320350CAS: 73232-52-7	- - -	124.00 €~1,707.00 €	Mon 28 Oct 24

+ info

3-Methoxy-p-tyramine Hydrochloride

Controlled Product

CAS:1477-68-5

Applications 3-Methoxy-p-tyramine is a major metabolite of Dopamine (D533780); product of catechol O-methyltransferase. References Jimenez, …

Formula:

C₉H₁₃NO₂·ClH

Color and Shape:

Off-White

Molecular weight:

203.67

Ref: TR-M332320

100mg		116.00 €
250mg		176.00 €
500mg		299.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

+ info

+ info

Fulvestrant 3-Sulfate Sodium Salt

Controlled Product

CAS:403656-83-7

Applications A metabolite of Fulvestrant (F862500). References Rao, P., et al.: J. Steroid Biochem., 25, …

Formula:

C₃₂H₄₆F₅NaO₆S₂

Color and Shape:

Neat

Molecular weight:

708.82

Ref: TR-F862520

1mg		381.00 €
10mg		2,618.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

+ info

4-Acetaminophen-d3 Sulfate Potassium Salt

+ info

4-Acetaminophen-d3 Sulfate Potassium Salt

Controlled Product

CAS:1188263-45-7

Applications 4-Acetaminophen-d3 Sulfate Potassium Salt is a deuterium labeled metabolite of Acetaminophen (A161220) (1,2,3). References …

Formula:

C₈H₅D₃KNO₅S

Color and Shape:

Neat

Molecular weight:

272.33

Ref: TR-A161232

1mg		260.00 €
10mg		1,726.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

+ info

+ info

Dimethylamine Hydrochloride

Controlled Product

CAS:506-59-2

Impurity Imatinib EP Impurity I Stability Hygroscopic Applications Dimethylamine hydrochloride (Imatinib EP Impurity I) is …

Formula:

C₂H₇N·ClH

Color and Shape:

Neat

Molecular weight:

81.54

Ref: TR-D446730

1g		93.00 €
5g		117.00 €
10g		132.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

+ info

3-(Formylamino)-1H-pyrazole-4-carboxamide

+ info

3-(Formylamino)-1H-pyrazole-4-carboxamide

Controlled Product

CAS:22407-20-1

Impurity Allopurinol EP Impurity B / Allopurinol USP Related Compound B Stability Hygroscopic Applications 3-(Formylamino)-1H-pyrazole-4-carboxamide …

Formula:

C₅H₆N₄O₂

Color and Shape:

White To Off-White

Molecular weight:

154.127

Ref: TR-F696750

250mg		313.00 €
2500mg		2,011.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

+ info

+ info

cis-Terbinafine Hydrochloride

Controlled Product

CAS:176168-78-8

Impurity Terbinafine EP Impurity B Applications cis-Terbinafine Hydrochloride (Terbinafine EP Impurity B) is an impurity …

Formula:

C₂₁H₂₅N·ClH

Color and Shape:

White

Molecular weight:

327.89

Ref: TR-T107490

5mg		356.00 €
25mg		1,082.00 €
100mg		2,482.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

+ info

+ info

Methyl 12-Ketostearate

CAS:2380-27-0

Formula:

C₁₉H₃₆O₃

Color and Shape:

White To Off-White

Molecular weight:

312.49

Ref: TR-M315090

50mg		201.00 €
100mg		288.00 €
500mg		1,144.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

+ info

Glycidol-d5

Controlled Product

CAS:1246819-20-4

Applications Labelled Glycidol. Stabilizer in manufacturing of vinyl polymers; intermediate in synthesis of glycerol, glycidyl …

Formula:

C₃H₅HO₂

Color and Shape:

Colourless

Molecular weight:

79.11

Ref: TR-G615702

5mg		193.00 €
25mg		356.00 €
100mg		1,204.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

+ info

+ info

(S)-Tenofovir Disoproxil Fumarate

Controlled Product

CAS:1432630-26-6

Impurity Tenofovir Disoproxil USP Related Compound A Applications The S-enantiomeric impurity of the antiviral Tenofovir …

Formula:

C₁₉H₃₀N₅O₁₀P·C₄H₄O₄

Color and Shape:

White Solid

Molecular weight:

635.52

Ref: TR-T018506

25mg		2,017.00 €
2500µg		309.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

+ info

+ info

N-Piperacillinyl Ampicillin

CAS:65772-67-0

Impurity Piperacillin EP Impurity D Applications N-Piperacillinyl Ampicillin (Piperacillin EP Impurity D) is an impurity …

Formula:

C₃₉H₄₄N₈O₁₀S₂

Color and Shape:

Neat

Molecular weight:

848.94

Ref: TR-P479960

25mg		315.00 €
250mg		2,109.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

+ info

rac 1,2-Bis-palmitoyl-3-chloropropanediol-D5

+ info

rac 1,2-Bis-palmitoyl-3-chloropropanediol-D5

Controlled Product

CAS:1185057-55-9

Applications rac 1,2-Bis-palmitoyl-3-chloropropanediol-D5 was useful for establishing an analytical method for quantifying free and ester …

Formula:

C₃₅H₅H₆₂ClO₄

Color and Shape:

White To Light Yellow

Molecular weight:

592.39

Ref: TR-B515202

1mg		248.00 €
25mg		2,215.00 €
2500µg		343.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

+ info

Phorate Oxon

Controlled Product

CAS:2600-69-3

Applications Phorate Oxon is a toxic metabolite of Phorate (P353500), an inhibitor of acetylcholinesterase and …

Formula:

C₇H₁₇O₃PS₂

Color and Shape:

Colourless

Molecular weight:

244.31

Ref: TR-P353510

10mg		325.00 €
100mg		2,139.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

+ info

2-Methyl-∆1-megestrol Acetate (Megestrol Acetate Impurity)

+ info

2-Methyl-∆1-megestrol Acetate (Megestrol Acetate Impurity)

Controlled Product

Applications A related impurity in Megestrol acetate (M208050). References Schneider, F., et al.: Helv. Chim. …

Formula:

C₂₅H₃₂O₄

Color and Shape:

Neat

Molecular weight:

396.52

Ref: TR-M320260

1mg		247.00 €
10mg		1,635.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

+ info

+ info

(2a)-Methyl Megestrol Acetate

Controlled Product

CAS:907193-65-1

Impurity Megestrol Acetate EP Impurity H Applications (2α)-Methyl Megestrol Acetate (Megestrol Acetate EP Impurity H) …

Formula:

C₂₅H₃₄O₄

Color and Shape:

Neat

Molecular weight:

398.54

Ref: TR-M320240

1mg		317.00 €
10mg		2,049.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

+ info

+ info

3-Ethoxy-androsta-3,5-dien-17-one

Controlled Product

CAS:972-46-3

Applications Testosterone (T155000) derivative. References McFarland, K., et al.: Science, 245, 494 (1989), Heckert, L., …

Formula:

C₂₁H₃₀O₂

Color and Shape:

Neat

Molecular weight:

314.46

Ref: TR-E890453

50mg		228.00 €
100mg		371.00 €

Estimated delivery in United States, on Monday 28 Oct 2024

+ info

1-[[2'-(Aminocarbonyl)[1,1'-biphenyl]-4-yl]methyl]-2-ethoxy-1H-benzimidazole-7-carb…

+ info

1-[[2'-(Aminocarbonyl)[1,1'-biphenyl]-4-yl]methyl]-2-ethoxy-1H-benzimidazole-7-carboxylic Acid Methyl Ester

Controlled Product

CAS:147404-76-0

Applications 1-[[2'-(Aminocarbonyl)[1,1'-biphenyl]-4-yl]methyl]-2-ethoxy-1H-benzimidazole-7-carboxylic Acid Methyl Ester is an intermediate in the synthesis of Degadant-3 (D229206), which …

Formula:

C₂₅H₂₃N₃O₄

Color and Shape:

Neat

Molecular weight:

429.47