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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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BrandProduct dataPurityPrice rangeEstimated delivery
Biosynth logo
Allopurinol impurity E
REF: 3D-IA63602CAS: 31055-19-3 		Min. 95%To inquireTue 14 Jan 25
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Labetalol EP Impurity C
REF: 3D-IL170154CAS: 2386661-13-6 		Min. 95%341.00 €~2,806.00 €Tue 14 Jan 25
Biosynth logo
Valdecoxib impurity I
REF: 3D-FA161770CAS: 1373038-59-5 		Min. 95%To inquireTue 14 Jan 25
Biosynth logo
2-(4-Ethylphenyl)-propanoic acid - Racemic
REF: 3D-IE46408CAS: 3585-52-2 		Min. 95%75.00 €~1,016.00 €Tue 14 Jan 25
Biosynth logo
(S)-Phenylephrine hydrochloride
REF: 3D-IP58255CAS: 939-38-8 		Min. 95%136.00 €~518.00 €Tue 14 Jan 25
Biosynth logo
Amlodipine besilate impurity A
REF: 3D-IA63610CAS: 88150-62-3 		Min. 95%To inquireTue 14 Jan 25
Biosynth logo
[9-Glycine]desmopressin
REF: 3D-IG173262		Min. 95%To inquireTue 14 Jan 25
Biosynth logo
2-Butyl-3-(3,5-diiodo-4-hydroxybenzoyl)benzofuran
REF: 3D-IB19486CAS: 1951-26-4 		Min. 95%To inquireTue 14 Jan 25
Biosynth logo
Diclofenac monobromo impurity, sodium salt
REF: 3D-ID21714CAS: 127792-45-4 		Min. 95%To inquireTue 14 Jan 25
Biosynth logo
1,1'-[Hydroxypropane-1,3-diylbis(oxy-2,1-phenylene)]bis(3-phenylpropan-1-one)
REF: 3D-IH63819CAS: 1329643-40-4 		Min. 95%400.00 €~2,551.00 €Tue 14 Jan 25
Biosynth logo
Nicergoline EP Impurity B
REF: 3D-IN171534CAS: 35264-46-1 		Min. 95%To inquireTue 14 Jan 25
Biosynth logo
Gentamicin B1
REF: 3D-AG46304CAS: 36889-16-4 		Min. 95%To inquireTue 14 Jan 25
Biosynth logo
2-Amino-5,6-dichloro-3(4H)-quinazoline acetic acid benzyl ester hydrobromide
REF: 3D-IA139091CAS: 1391053-41-0 		Min. 95%To inquireTue 14 Jan 25
Biosynth logo
4-Methyl-5-[(2-aminoethyl)thiomethyl]imidazole dihydrochloride
REF: 3D-IM58265CAS: 38603-72-4 		Min. 95%To inquireTue 14 Jan 25
Biosynth logo
Acarbose EP Impurity G
REF: 3D-IA175642CAS: 1013621-73-2 		Min. 95%To inquireTue 14 Jan 25
Biosynth logo
Solifenacin impurity C
REF: 3D-IS167451CAS: 1534326-81-2 		Min. 95 Area-%To inquireTue 14 Jan 25
Biosynth logo
Torasemide Impurity E
REF: 3D-FT176082CAS: 72810-57-2 		Min. 95%136.00 €~569.00 €Tue 14 Jan 25
Biosynth logo
Benserazide EP Impurity B hydrochloride
REF: 3D-IB183713		Min. 95%813.00 €~4,405.00 €Tue 14 Jan 25
Biosynth logo
Cefazolinamide
REF: 3D-IC183354CAS: 2410652-70-7 		Min. 95%364.00 €~2,898.00 €Tue 14 Jan 25
Biosynth logo
Cetirizine 3-chloro impurity dihydrochloride
REF: 3D-IC19908CAS: 1232460-29-5 		Min. 95%To inquireTue 14 Jan 25
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Allopurinol impurity E
Biosynth logo
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Allopurinol impurity E

CAS:31055-19-3
This product is a synthetic impurity of Allopurinol. It is a cyclization reaction product of …
Formula:
C7H9N3O3
Purity:
Min. 95%
Molecular weight:
183.16 g/mol

Ref: 3D-IA63602

2mgTo inquire
5mgTo inquire
10mgTo inquire
25mgTo inquire
50mgTo inquire
Estimated delivery in United States, on Tuesday 14 Jan 2025
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Labetalol EP Impurity C
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Labetalol EP Impurity C

CAS:2386661-13-6
Labetalol EP Impurity C is a synthetic impurity standard that is used to calibrate HPLC …
Formula:
C16H18N2O3
Purity:
Min. 95%
Molecular weight:
286.33 g/mol

Ref: 3D-IL170154

1mg341.00 €
2mg480.00 €
5mg949.00 €
10mg1,403.00 €
25mg2,806.00 €
Estimated delivery in United States, on Tuesday 14 Jan 2025
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Valdecoxib impurity I
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Valdecoxib impurity I

CAS:1373038-59-5
Valdecoxib impurity I is a synthetic compound that is used as an impurity standard for …
Formula:
C16H15N3O5S2
Purity:
Min. 95%
Molecular weight:
393.44 g/mol

Ref: 3D-FA161770

5mgTo inquire
10mgTo inquire
25mgTo inquire
50mgTo inquire
100mgTo inquire
Estimated delivery in United States, on Tuesday 14 Jan 2025
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2-(4-Ethylphenyl)-propanoic acid - Racemic
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2-(4-Ethylphenyl)-propanoic acid - Racemic

CAS:3585-52-2
2-(4-Ethylphenyl)-propanoic acid is a supplement that is used to relieve pain and inflammation. It belongs …
Formula:
C11H14O2
Purity:
Min. 95%
Molecular weight:
178.23 g/mol

Ref: 3D-IE46408

10mg189.00 €
25mg273.00 €
50mg400.00 €
100mg569.00 €
250mg1,016.00 €
Estimated delivery in United States, on Tuesday 14 Jan 2025
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discount label
(S)-Phenylephrine hydrochloride
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(S)-Phenylephrine hydrochloride

CAS:939-38-8
(S)-Phenylephrine hydrochloride is a chiral sulfate salt of phenylephrine that is used as a bronchodilator. …
Formula:
C9H14ClNO2
Purity:
Min. 95%
Molecular weight:
203.67 g/mol

Ref: 3D-IP58255

1mg136.00 €
2mg172.00 €
5mg248.00 €
10mg364.00 €
25mg518.00 €
Estimated delivery in United States, on Tuesday 14 Jan 2025
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Amlodipine besilate impurity A
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Amlodipine besilate impurity A

CAS:88150-62-3
Amlodipine besilate impurity A is a low-energy impurity that is formed in the crystallization process. …
Formula:
C28H27ClN2O7
Purity:
Min. 95%
Molecular weight:
539 g/mol

Ref: 3D-IA63610

25mgTo inquire
50mgTo inquire
100mgTo inquire
Estimated delivery in United States, on Tuesday 14 Jan 2025
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[9-Glycine]desmopressin
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[9-Glycine]desmopressin

9-Glycine Desmopressin is a drug product that has been custom synthesized for use in research …
Purity:
Min. 95%

Ref: 3D-IG173262

100mgTo inquire
Estimated delivery in United States, on Tuesday 14 Jan 2025
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2-Butyl-3-(3,5-diiodo-4-hydroxybenzoyl)benzofuran
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2-Butyl-3-(3,5-diiodo-4-hydroxybenzoyl)benzofuran

CAS:1951-26-4
2-Butyl-3-(3,5-diiodo-4-hydroxybenzoyl)benzofuran is a benzofuran. It is a yellow solid that can be dissolved in water …
Formula:
C19H16I2O3
Purity:
Min. 95%
Molecular weight:
546.14 g/mol

Ref: 3D-IB19486

1gTo inquire
2gTo inquire
5gTo inquire
250mgTo inquire
500mgTo inquire
Estimated delivery in United States, on Tuesday 14 Jan 2025
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Diclofenac monobromo impurity, sodium salt
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Diclofenac monobromo impurity, sodium salt

CAS:127792-45-4
Diclofenac monobromo impurity, sodium salt is a drug product that is used as an analytical …
Formula:
C14H10BrClNNaO2
Purity:
Min. 95%
Molecular weight:
362.58 g/mol

Ref: 3D-ID21714

1mgTo inquire
2mgTo inquire
5mgTo inquire
10mgTo inquire
25mgTo inquire
Estimated delivery in United States, on Tuesday 14 Jan 2025
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1,1'-[Hydroxypropane-1,3-diylbis(oxy-2,1-phenylene)]bis(3-phenylpropan-1-one)
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1,1'-[Hydroxypropane-1,3-diylbis(oxy-2,1-phenylene)]bis(3-phenylpropan-1-one)

CAS:1329643-40-4
1,1'-[Hydroxypropane-1,3-diylbis(oxy-2,1-phenylene)]bis(3-phenylpropan-1-one) is an analytical standard for HPLC. It is a natural and synthetic metabolite of …
Formula:
C33H32O5
Purity:
Min. 95%
Molecular weight:
508.6 g/mol

Ref: 3D-IH63819

1mg400.00 €
2mg569.00 €
5mg949.00 €
10mg1,531.00 €
25mg2,551.00 €
Estimated delivery in United States, on Tuesday 14 Jan 2025
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discount label
Nicergoline EP Impurity B
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Nicergoline EP Impurity B

CAS:35264-46-1
Nicergoline EP Impurity B is a metabolite of nicergoline, a drug product. It has been …
Purity:
Min. 95%

Ref: 3D-IN171534

1mgTo inquire
2mgTo inquire
5mgTo inquire
10mgTo inquire
500µgTo inquire
Estimated delivery in United States, on Tuesday 14 Jan 2025
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Gentamicin B1
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Gentamicin B1

CAS:36889-16-4
Gentamicin B1 is a gentamicin antibiotic that is used to treat skin cancer. It inhibits …
Formula:
C20H40N4O10
Purity:
Min. 95%
Color and Shape:
Solid
Molecular weight:
496.55 g/mol

Ref: 3D-AG46304

1mgTo inquire
Estimated delivery in United States, on Tuesday 14 Jan 2025
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2-Amino-5,6-dichloro-3(4H)-quinazoline acetic acid benzyl ester hydrobromide
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2-Amino-5,6-dichloro-3(4H)-quinazoline acetic acid benzyl ester hydrobromide

CAS:1391053-41-0
2-Amino-5,6-dichloro-3-(4H)-quinazoline acetic acid benzyl ester hydrobromide is a drug product that is used as an …
Formula:
C17H15Cl2N3O2
Purity:
Min. 95%
Molecular weight:
364.23 g/mol

Ref: 3D-IA139091

1mgTo inquire
5mgTo inquire
10mgTo inquire
Estimated delivery in United States, on Tuesday 14 Jan 2025
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4-Methyl-5-[(2-aminoethyl)thiomethyl]imidazole dihydrochloride
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4-Methyl-5-[(2-aminoethyl)thiomethyl]imidazole dihydrochloride

CAS:38603-72-4
4-Methyl-5-[(2-aminoethyl)thiomethyl]imidazole dihydrochloride is a synthetic drug product that has been purified to high purity. This …
Formula:
C7H13N3S·2HCl
Purity:
Min. 95%
Molecular weight:
244.19 g/mol

Ref: 3D-IM58265

1gTo inquire
2gTo inquire
100mgTo inquire
250mgTo inquire
500mgTo inquire
Estimated delivery in United States, on Tuesday 14 Jan 2025
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Acarbose EP Impurity G
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Acarbose EP Impurity G

CAS:1013621-73-2
Acarbose EP Impurity G is a pharmaceutical grade impurity that is used as a reference …
Purity:
Min. 95%

Ref: 3D-IA175642

1mgTo inquire
Estimated delivery in United States, on Tuesday 14 Jan 2025
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Solifenacin impurity C
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Solifenacin impurity C

CAS:1534326-81-2
Solifenacin impurity C is an impurity that is found in the drug product Solifenacin. It …
Formula:
C31H28N2O
Purity:
Min. 95 Area-%
Color and Shape:
White Powder
Molecular weight:
444.57 g/mol

Ref: 3D-IS167451

5mgTo inquire
10mgTo inquire
25mgTo inquire
50mgTo inquire
100mgTo inquire
Estimated delivery in United States, on Tuesday 14 Jan 2025
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Torasemide Impurity E
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Torasemide Impurity E

CAS:72810-57-2
Torasemide Impurity E is a drug product that belongs to the group of impurities. It …
Formula:
C15H17N3O4S
Purity:
Min. 95%
Molecular weight:
335.38 g/mol

Ref: 3D-FT176082

5mg136.00 €
10mg189.00 €
25mg273.00 €
50mg400.00 €
100mg569.00 €
Estimated delivery in United States, on Tuesday 14 Jan 2025
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discount label
Benserazide EP Impurity B hydrochloride
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Benserazide EP Impurity B hydrochloride

Please enquire for more information about Benserazide EP Impurity B hydrochloride including the price, delivery …
Formula:
C17H21N3O8•HCl
Purity:
Min. 95%
Molecular weight:
431.83 g/mol

Ref: 3D-IB183713

1mg813.00 €
2mg1,276.00 €
5mg2,667.00 €
10mg4,405.00 €
Estimated delivery in United States, on Tuesday 14 Jan 2025
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discount label
Cefazolinamide
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Cefazolinamide

CAS:2410652-70-7
Please enquire for more information about Cefazolinamide including the price, delivery time and more detailed …
Formula:
C14H15N9O3S3
Purity:
Min. 95%
Molecular weight:
453.5 g/mol

Ref: 3D-IC183354

1mg364.00 €
5mg801.00 €
10mg1,160.00 €
25mg2,029.00 €
50mg2,898.00 €
Estimated delivery in United States, on Tuesday 14 Jan 2025
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Cetirizine 3-chloro impurity dihydrochloride
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Cetirizine 3-chloro impurity dihydrochloride

CAS:1232460-29-5
Cetirizine 3-chloro impurity dihydrochloride is a drug substance that contains the impurity cetirizine. The compound …
Formula:
C21H27Cl3N2O3
Purity:
Min. 95%
Color and Shape:
Solid
Molecular weight:
461.81 g/mol

Ref: 3D-IC19908

1mgTo inquire
2mgTo inquire
5mgTo inquire
10mgTo inquire
25mgTo inquire
Estimated delivery in United States, on Tuesday 14 Jan 2025
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