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
Clindamycin 2,3-Dipalmitate (Methyl 7-chloro-6,7,8-trideoxy-6-(1-methyl-trans-4-propyl-L-2-pyrrolidinecarboxamido)-1-thio-L-threo-α-D-galacto-octopyranoside 2,3-dipalmitate monohydrochloride) REF: 45-1135892	- - -	1,357.00 €	Tue 15 Oct 24
Atazanavir Related Compound A ((S)-2-[(Methoxycarbonyl)amino]-3,3-dimethylbutanoic acid) REF: 45-1044356CAS: 162537-11-3	- - -	1,371.00 €	Tue 15 Oct 24
Formoterol Related Compound D (N-(2-Hydroxy-5-(1-hydroxy-2-{[1-(4-methoxyphenyl)propan-2-yl](methyl)amino}ethyl)phenyl)formamide fumarate) REF: 45-1286141CAS: 1795133-97-9	- - -	1,407.00 €	Tue 15 Oct 24
Methotrexate Related Compound B ((S)-2-{4-[(2,4-diaminopteridin-6-yl)methylamino]benzamido}pentanedioic acid) REF: 45-1414025CAS: 54-62-6	- - -	1,653.00 €	Tue 15 Oct 24
Trimipramine Related Compound A (3-(5H-Dibenzo[b,f]azepin-5-yl)-N,N,2-trimethylpropan-1-amine) REF: 45-1692710CAS: 315-69-5	- - -	960.00 €	Tue 15 Oct 24
Proguanil Related Compound G (1-(3-chlorophenyl)-5-isopropylbiguanide hydrochloride) REF: 45-1568095CAS: 1071546-52-5	- - -	865.00 €	Tue 15 Oct 24
Famciclovir Related Compound C (4-(2-amino-9H-purin-9-yl)-2-methylbutyl acetate) REF: 45-1269196CAS: 174155-70-5	- - -	1,292.00 €	Tue 15 Oct 24
Phthalazine REF: 45-1535959CAS: 253-52-1	- - -	1,308.00 €	Tue 15 Oct 24
Fluorometholone Related Compound A (11β,17α-Dihydroxy-6α-methylpregna-1,4-diene-3,20-dione) REF: 45-1278018CAS: 6870-94-6	- - -	1,477.00 €	Tue 15 Oct 24
Cephalexin Related Compound F ((6R,7R)-7-[(R)-2-Amino-2-phenylacetamido]-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-3-ene-2-carboxylic acid) REF: 45-1099063CAS: 79750-46-2	- - -	1,441.00 €	Tue 15 Oct 24
Proguanil Related Compound F (1-(3,4-dichlorophenyl)-5-isopropylbiguanide hydrochloride) REF: 45-1568084CAS: 6001-93-0	- - -	865.00 €	Tue 15 Oct 24
Moexipril Related Compound G ((S)-6,7-dimethoxy-2-{(S)-2-[(S)-1-methoxy-1-oxo-4-phenylbutan-2-ylamino]propanoyl}-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid, hydrochloride) REF: 45-1445664	- - -	581.00 €	Tue 15 Oct 24
Oxazepam Related Compound C (6-chloro-4-phenylquinazoline-2-carbaldehyde) REF: 45-1483039CAS: 5958-05-4	- - -	1,441.00 €	Tue 15 Oct 24
Roflumilast Related Compound C (3,5-Dichloropyridin-4-amine) REF: 45-1605045CAS: 22889-78-7	- - -	1,469.00 €	Tue 15 Oct 24
4-Methoxymeloxicam (4-methoxy-2-methyl-N-(5-methyl-1,3-thiazol-2-yl)-2H-1,2-benzothiazine-3-carboxamide 1,1-dioxide) REF: 45-1379445CAS: 1391051-96-9	- - -	1,145.00 €	Tue 15 Oct 24
Dantrolene Related Compound A (1,2-Bis{[5-(4-nitrophenyl)furan-2-yl]methylene}hydrazine) REF: 45-1163162CAS: 301359-05-7	- - -	1,493.00 €	Tue 15 Oct 24
Pimobendan Related Compound B (N-[2-Amino-4-(4-methyl-6-oxo-1,4,5,6-tetrahydropyridazin-3-yl)phenyl]-4-methoxybenzamide) REF: 45-1569337CAS: 74149-74-9	- - -	1,442.00 €	Tue 15 Oct 24
Benazepril Related Compound G ((3-(1-Ethoxycarbonyl-3-phenyl-(1S)-propyl)amino-2,3,4,5-tetrahydro-2-oxo-1H-1-(3S)-benzazepine)-1-acetic acid, ethyl ester) REF: 45-1048685CAS: 103129-58-4	- - -	1,371.00 €	Tue 15 Oct 24
Dopamine Related Compound A (5-(2-Aminoethyl)-2-methoxyphenol) REF: 45-1225215CAS: 3213-30-7	- - -	1,469.00 €	Tue 15 Oct 24
Chloroquine Related Compound G (4-((7-chloroquinolin-4-yl)amino)-N,N-diethylpentan-1-amine oxide sulfate) REF: 45-1118394	- - -	1,552.00 €	Tue 15 Oct 24

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Clindamycin 2,3-Dipalmitate (Methyl 7-chloro-6,7,8-trideoxy-6-(1-methyl-trans-4-propyl-L-2-pyrrolidinecarboxamido)-1-thio-L-threo-α-D-galacto-octopyranoside 2,3-dipalmitate monohydrochloride)

Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, nesoi

Formula:

C₅₀H₉₃ClN₂O₇S·HCl

Color and Shape:

White Off-White Solid

Molecular weight:

936.61588

Ref: 45-1135892

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Atazanavir Related Compound A ((S)-2-[(Methoxycarbonyl)amino]-3,3-dimethylbutanoic acid)

CAS:162537-11-3

Acyclic amides (including acyclic carbamates) and their derivatives and salts thereof, nesoi

Formula:

C₈H₁₅NO₄

Color and Shape:

Off-White White Powder Clumpy

Molecular weight:

189.10011

Ref: 45-1044356

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Formoterol Related Compound D (N-(2-Hydroxy-5-(1-hydroxy-2-{[1-(4-methoxyphenyl)propan-2-yl](methyl)amino}ethyl)phenyl)formamide fumarate)

CAS:1795133-97-9

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

Formula:

(C₂₀H₂₆N₂O₄)₂·C₄H₄O₄

Color and Shape:

Off-White Light Brown Solid

Molecular weight:

832.38947

Ref: 45-1286141

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Methotrexate Related Compound B ((S)-2-{4-[(2,4-diaminopteridin-6-yl)methylamino]benzamido}pentanedioic acid)

CAS:54-62-6

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

Formula:

C₁₉H₂₀N₈O₅

Color and Shape:

White Yellow Powder

Molecular weight:

440.41

Ref: 45-1414025

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Trimipramine Related Compound A (3-(5H-Dibenzo[b,f]azepin-5-yl)-N,N,2-trimethylpropan-1-amine)

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Trimipramine Related Compound A (3-(5H-Dibenzo[b,f]azepin-5-yl)-N,N,2-trimethylpropan-1-amine)

CAS:315-69-5

Heterocyclic compounds with nitrogen hetero-atom(s) only, aromatic or modified aromatic, nesoi

Formula:

C₂₀H₂₄N₂

Color and Shape:

Pale Yellow Solid

Molecular weight:

292.19395

Ref: 45-1692710

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Proguanil Related Compound G (1-(3-chlorophenyl)-5-isopropylbiguanide hydrochloride)

CAS:1071546-52-5

Aromatic imines and their derivatives, salts thereof

Formula:

C₁₁H₁₆ClN₅·HCl

Color and Shape:

White Crystalline Powder

Molecular weight:

253.10942

Ref: 45-1568095

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Famciclovir Related Compound C (4-(2-amino-9H-purin-9-yl)-2-methylbutyl acetate)

CAS:174155-70-5

Compounds containing a pyrimidine ring (whether or not

Formula:

C₁₂H₁₇N₅O₂

Color and Shape:

White Light Yellow Powder

Molecular weight:

263.13822

Ref: 45-1269196

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Phthalazine

CAS:253-52-1

Heterocyclic compounds with nitrogen hetero-atom(s) only, aromatic or modified aromatic, nesoi

Formula:

C₈H₆N₂

Color and Shape:

Light Yellow Powder

Molecular weight:

130.0531

Ref: 45-1535959

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Fluorometholone Related Compound A (11β,17α-Dihydroxy-6α-methylpregna-1,4-diene-3,20-dione)

CAS:6870-94-6

Ketone-alcohols and ketone-aldehydes, nesoi

Formula:

C₂₂H₃₀O₄

Color and Shape:

White Off-White Powder

Molecular weight:

358.21441

Ref: 45-1278018

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Cephalexin Related Compound F ((6R,7R)-7-[(R)-2-Amino-2-phenylacetamido]-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-3-ene-2-carboxylic acid)

CAS:79750-46-2

Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, nesoi

Formula:

C₁₆H₁₇N₃O₄S

Color and Shape:

White Off-White Powder

Molecular weight:

347.09398

Ref: 45-1099063

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Proguanil Related Compound F (1-(3,4-dichlorophenyl)-5-isopropylbiguanide hydrochloride)

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Proguanil Related Compound F (1-(3,4-dichlorophenyl)-5-isopropylbiguanide hydrochloride)

CAS:6001-93-0

Aromatic imines and their derivatives, salts thereof

Formula:

C₁₁H₁₅Cl₂N₅·ClH

Color and Shape:

White Crystalline Powder

Molecular weight:

323.04713

Ref: 45-1568084

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Moexipril Related Compound G ((S)-6,7-dimethoxy-2-{(S)-2-[(S)-1-methoxy-1-oxo-4-phenylbutan-2-ylamino]propanoyl}-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid, hydrochloride)

Compounds containing a quinoline or isoquinoline ring-system, whether or not hydrogenated, not further fused, excluding …

Formula:

C₂₆H₃₃ClN₂O₇

Color and Shape:

Off-White Light Pink Powder

Molecular weight:

520.19763

Ref: 45-1445664

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Oxazepam Related Compound C (6-chloro-4-phenylquinazoline-2-carbaldehyde)

CAS:5958-05-4

Heterocyclic compounds (excluding aromatic or modified aromatic) withnitrogen hetero

Formula:

C₁₅H₉ClN₂O

Color and Shape:

Yellow Orange Powder

Molecular weight:

268.04034

Ref: 45-1483039

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Roflumilast Related Compound C (3,5-Dichloropyridin-4-amine)

CAS:22889-78-7

Compounds containing an unfused pyridine ring in the structure, nesoi

Formula:

C₅H₄Cl₂N₂

Color and Shape:

White Yellow Powder

Molecular weight:

161.97515

Ref: 45-1605045

Estimated delivery in United States, on Tuesday 15 Oct 2024

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4-Methoxymeloxicam (4-methoxy-2-methyl-N-(5-methyl-1,3-thiazol-2-yl)-2H-1,2-benzothiazine-3-carboxamide 1,1-dioxide)

CAS:1391051-96-9

Compounds containing an unfused thiazole ring (whether or not hydrogenated) in the structure

Formula:

C₁₅H₁₅N₃O₄S₂

Color and Shape:

Yellow Powder

Molecular weight:

365.0504

Ref: 45-1379445

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Dantrolene Related Compound A (1,2-Bis{[5-(4-nitrophenyl)furan-2-yl]methylene}hydrazine)

CAS:301359-05-7

Compounds containing an unfused furan ring, whether or not hydrogenated, in the structure, nesoi

Formula:

C₂₂H₁₄N₄O₆

Color and Shape:

Light Grey Yellow Solid

Molecular weight:

430.09133

Ref: 45-1163162

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Pimobendan Related Compound B (N-[2-Amino-4-(4-methyl-6-oxo-1,4,5,6-tetrahydropyridazin-3-yl)phenyl]-4-methoxybenzamide)

CAS:74149-74-9

Heterocyclic compounds with nitrogen hetero-atom(s) only, aromatic or modified aromatic, nesoi

Formula:

C₁₉H₂₀N₄O₃

Color and Shape:

White Off-White Powder

Molecular weight:

352.15354

Ref: 45-1569337

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Benazepril Related Compound G ((3-(1-Ethoxycarbonyl-3-phenyl-(1S)-propyl)amino-2,3,4,5-tetrahydro-2-oxo-1H-1-(3S)-benzazepine)-1-acetic acid, ethyl ester)

CAS:103129-58-4

Lactams, nesoi

Formula:

C₂₆H₃₂N₂O₅

Color and Shape:

White Clumpy Crystalline Powder

Molecular weight:

452.23112

Ref: 45-1048685

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Dopamine Related Compound A (5-(2-Aminoethyl)-2-methoxyphenol)

CAS:3213-30-7

Amino-naphthols and other amino-phenols, their ethers and esters, other than those cont more than one …

Formula:

C₉H₁₃NO₂

Color and Shape:

Off-White Powder

Molecular weight:

167.09463

Ref: 45-1225215

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Chloroquine Related Compound G (4-((7-chloroquinolin-4-yl)amino)-N,N-diethylpentan-1-amine oxide sulfate)

Compounds (excluding drugs and pesticides) containing a quinoline or isoquinoline ring

Formula:

C₁₈H₂₆ClN₃O·H₂SO₄

Color and Shape:

Yellow Powder

Molecular weight:

433.14382

Ref: 45-1118394

Estimated delivery in United States, on Tuesday 15 Oct 2024

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