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
Nefazodone Related Compound B (2-[3-[4-(4-chlorophenyl)-1-piperazinyl]propyl]-5-ethyl-2,4-dihydro-4-(2-phenoxyethyl)-3H-1,2,4-triazol-3-one hydrochloride) REF: 45-1457924	- - -	793.00 €	Tue 15 Oct 24
Ramipril Related Compound C ((2S,3aS,6aS)-1-{[(S)-4-Cyclohexyl-1-ethoxy-1-oxobutan-2-yl]-L-alanyl}octahydrocyclopenta[b]pyrrole-2-carboxylic acid hydrochloride) REF: 45-1598338CAS: 885516-61-0	- - -	1,371.00 €	Tue 15 Oct 24
Letrozole Related Compound A (4,4'-(1H-1,3,4-triazol-1-ylmethylene)dibenzonitrile) REF: 45-1356982CAS: 112809-52-6	- - -	1,477.00 €	Tue 15 Oct 24
Dalfampridine Related Compound A (4-Aminopyridine 1-oxide) REF: 45-1162545CAS: 3535-75-9	- - -	1,374.00 €	Tue 15 Oct 24
Bisacodyl Related Compound C (4-[(4-Hydroxyphenyl)(pyridin-2-yl)methyl]phenyl acetate) REF: 45-1074051CAS: 72901-16-7	- - -	1,477.00 €	Tue 15 Oct 24
Bupivacaine Related Compound A (6-(butylamino)-N-(2,6-dimethylphenyl)hexanamide) (AS) REF: 45-1078518	- - -	1,371.00 €	Tue 15 Oct 24
Haloperidol Related Compound B (4-[4-(4-Chlorophenyl)-4-hydroxypiperidin-1-yl]-1-(2-fluorophenyl)butan-1-one) REF: 45-1303024CAS: 1391052-53-1	- - -	1,371.00 €	Tue 15 Oct 24
Phthalic Acid REF: 45-1535899CAS: 88-99-3	- - -	504.00 €	Tue 15 Oct 24
Ketorolac Related Compound D (5-benzoyl-2,3-dihydro-1H-pyrrolizine) REF: 45-1356348CAS: 113502-55-9	- - -	1,511.00 €	Tue 15 Oct 24
Capecitabine Related Compound C (2',3'-O-carbonyl-5'-deoxy-5-fluoro-N4-(pentyloxycarbonyl)cytidine) REF: 45-1090739CAS: 921769-65-5	- - -	1,511.00 €	Tue 15 Oct 24
Latanoprost Related Compound B (Isopropyl (Z)-7-[(1R,2R,3R,5S)-3,5-dihydroxy-2-[(3S)-3-hydroxy-5-phenylpentyl]cyclopentyl]-5-heptenoate) REF: 45-1357497CAS: 145773-22-4	- - -	1,797.00 €	Tue 15 Oct 24
Dronedarone Related Compound A (N-{2-Butyl-3-[4-(3-butylaminopropoxy)benzoyl]benzofuran-5-yl}methanesulfonamide, hydrochloride) REF: 45-1228541CAS: 197431-02-0	- - -	1,477.00 €	Tue 15 Oct 24
Exemestane Related Compound A (6-Methyleneandrosta-4-ene-3,17-dione) REF: 45-1269061CAS: 19457-55-7	- - -	1,277.00 €	Tue 15 Oct 24
Timolol Related Compound D (4-Morpholino-1,2,5-thiadiazol-3-ol) REF: 45-1667369CAS: 30165-97-0	- - -	1,371.00 €	Tue 15 Oct 24
Levalbuterol Related Compound A (4-(2-tert-Butylamino-ethyl)-2-hydroxymethyl-phenol) REF: 45-1358795CAS: 1823256-56-9	- - -	1,552.00 €	Tue 15 Oct 24
Dorzolamide Hydrochloride Related Compound A ((4R,6R)-4-(ethylamino)-5,6-dihydro-6-methyl-4H-thieno[2,3-b]thiopyran-2-sulfonamide-7,7-dioxide, monohydrochloride) REF: 45-1225292CAS: 122028-36-8	- - -	1,552.00 €	Tue 15 Oct 24
Salicylic Acid Related Compound A (4-hydroxybenzoic acid) REF: 45-1609013CAS: 99-96-7	- - -	1,477.00 €	Tue 15 Oct 24
Chloroquine Related Compound A (4,7-dichloroquinoline) REF: 45-1118328CAS: 86-98-6	- - -	1,371.00 €	Tue 15 Oct 24
Ciclopirox Related Compound B (6-Cyclohexyl-4-methyl-2-pyrone) REF: 45-1134040CAS: 14818-35-0	- - -	1,371.00 €	Tue 15 Oct 24
Paliperidone Related Compound C (3-(2-Chloroethyl)-9-hydroxy-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one) REF: 45-1491831CAS: 130049-82-0	- - -	1,441.00 €	Tue 15 Oct 24

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Nefazodone Related Compound B (2-[3-[4-(4-chlorophenyl)-1-piperazinyl]propyl]-5-ethyl-2,4-dihydro-4-(2-phenoxyethyl)-3H-1,2,4-triazol-3-one hydrochloride)

Compounds containing a pyrimidine ring (whether or not

Formula:

C₂₅H₃₂ClN₅O₂·HCl

Color and Shape:

White Powder

Molecular weight:

506.47

Ref: 45-1457924

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Ramipril Related Compound C ((2S,3aS,6aS)-1-{[(S)-4-Cyclohexyl-1-ethoxy-1-oxobutan-2-yl]-L-alanyl}octahydrocyclopenta[b]pyrrole-2-carboxylic acid hydrochloride)

CAS:885516-61-0

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

Formula:

C₂₃H₃₈N₂O₅·HCl

Color and Shape:

White Solid Crystalline Powder

Molecular weight:

422.27807

Ref: 45-1598338

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Letrozole Related Compound A (4,4'-(1H-1,3,4-triazol-1-ylmethylene)dibenzonitrile)

CAS:112809-52-6

Aromatic or modified aromatic heterocyclic compounds withnitrogen hetero-atom(s) only nesoi

Formula:

C₁₇H₁₁N₅

Color and Shape:

White Off-White Powder

Molecular weight:

285.10145

Ref: 45-1356982

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Dalfampridine Related Compound A (4-Aminopyridine 1-oxide)

CAS:3535-75-9

Compounds containing an unfused pyridine ring in the structure, nesoi

Formula:

C₅H₆N₂O

Color and Shape:

White Solid

Molecular weight:

110.04801

Ref: 45-1162545

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Bisacodyl Related Compound C (4-[(4-Hydroxyphenyl)(pyridin-2-yl)methyl]phenyl acetate)

CAS:72901-16-7

Compounds containing an unfused pyridine ring in the structure, nesoi

Formula:

C₂₀H₁₇NO₃

Color and Shape:

Solid

Molecular weight:

319.12084

Ref: 45-1074051

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Bupivacaine Related Compound A (6-(butylamino)-N-(2,6-dimethylphenyl)hexanamide) (AS)

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

Formula:

C₁₈H₃₀N₂O

Color and Shape:

White Off-White Powder

Molecular weight:

290.23581

Ref: 45-1078518

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Haloperidol Related Compound B (4-[4-(4-Chlorophenyl)-4-hydroxypiperidin-1-yl]-1-(2-fluorophenyl)butan-1-one)

CAS:1391052-53-1

Compounds containing an unfused pyridine ring in the structure, nesoi

Formula:

C₂₁H₂₃ClFNO₂

Color and Shape:

White Off-White Powder

Molecular weight:

375.14013

Ref: 45-1303024

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Phthalic Acid

CAS:88-99-3

Aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids etc not elsewhere specified or included

Formula:

C₈H₆O₄

Color and Shape:

White Powder

Molecular weight:

166.02661

Ref: 45-1535899

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Ketorolac Related Compound D (5-benzoyl-2,3-dihydro-1H-pyrrolizine)

CAS:113502-55-9

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

Formula:

C₁₄H₁₃NO

Color and Shape:

White Light Brown Powder

Molecular weight:

211.09971

Ref: 45-1356348

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Capecitabine Related Compound C (2',3'-O-carbonyl-5'-deoxy-5-fluoro-N4-(pentyloxycarbonyl)cytidine)

CAS:921769-65-5

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

Formula:

C₁₆H₂₀FN₃O₇

Color and Shape:

White Powder

Molecular weight:

385.12853

Ref: 45-1090739

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Latanoprost Related Compound B (Isopropyl (Z)-7-[(1R,2R,3R,5S)-3,5-dihydroxy-2-[(3S)-3-hydroxy-5-phenylpentyl]cyclopentyl]-5-heptenoate)

CAS:145773-22-4

Prostaglandins, thromboxanes and leukotrienes, their derivatives and structural analogues

Formula:

C₂₆H₄₀O₅

Color and Shape:

Liquid

Molecular weight:

432.28757

Ref: 45-1357497

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Dronedarone Related Compound A (N-{2-Butyl-3-[4-(3-butylaminopropoxy)benzoyl]benzofuran-5-yl}methanesulfonamide, hydrochloride)

CAS:197431-02-0

Aromatic pesticides with oxygen hetero

Formula:

C₂₇H₃₆N₂O₅S·HCl

Color and Shape:

Powder

Molecular weight:

536.21117

Ref: 45-1228541

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Exemestane Related Compound A (6-Methyleneandrosta-4-ene-3,17-dione)

CAS:19457-55-7

Cyclanic, cyclenic or cycloterpenic ketones without oth

Formula:

C₂₀H₂₆O₂

Color and Shape:

Powder

Molecular weight:

240.0

Ref: 45-1269061

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Timolol Related Compound D (4-Morpholino-1,2,5-thiadiazol-3-ol)

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Timolol Related Compound D (4-Morpholino-1,2,5-thiadiazol-3-ol)

CAS:30165-97-0

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

Formula:

C₆H₉N₃O₂S

Color and Shape:

Off-White Powder

Molecular weight:

187.04155

Ref: 45-1667369

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Levalbuterol Related Compound A (4-(2-tert-Butylamino-ethyl)-2-hydroxymethyl-phenol)

CAS:1823256-56-9

Aromatic amino-alcohol-phenols, aromatic amino-acid-phenols and other aromatic amino compounds with oxygen function

Formula:

C₁₃H₂₁NO₂

Color and Shape:

Off-White Powder

Molecular weight:

223.15723

Ref: 45-1358795

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Dorzolamide Hydrochloride Related Compound A ((4R,6R)-4-(ethylamino)-5,6-dihydro-6-methyl-4H-thieno[2,3-b]thiopyran-2-sulfonamide-7,7-dioxide, monohydrochloride)

CAS:122028-36-8

Sulfonamides, nesoi

Formula:

C₁₀H₁₆N₂O₄S₃·HCl

Color and Shape:

White Powder

Molecular weight:

324.02722

Ref: 45-1225292

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Salicylic Acid Related Compound A (4-hydroxybenzoic acid)

CAS:99-96-7

Carboxylic acids with phenol function but without other oxygen function, their anhydrides, halides, peroxides etc …

Formula:

C₇H₆O₃

Color and Shape:

White Powder

Molecular weight:

138.03169

Ref: 45-1609013

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Chloroquine Related Compound A (4,7-dichloroquinoline)

CAS:86-98-6

Compounds (excluding drugs and pesticides) containing a quinoline or isoquinoline ring-system (whether or not hydrogenated) …

Formula:

C₉H₅Cl₂N

Color and Shape:

Off-White Brownish Yellow Crystals

Molecular weight:

196.9799

Ref: 45-1118328

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Ciclopirox Related Compound B (6-Cyclohexyl-4-methyl-2-pyrone)

CAS:14818-35-0

Lactones nesoi

Formula:

C₁₂H₁₆O₂

Color and Shape:

Yellow White Crystalline Powder

Molecular weight:

192.11503

Ref: 45-1134040

Estimated delivery in United States, on Tuesday 15 Oct 2024

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Paliperidone Related Compound C (3-(2-Chloroethyl)-9-hydroxy-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one)

CAS:130049-82-0

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

Formula:

C₁₁H₁₅ClN₂O₂

Color and Shape:

Off-White Crystalline Powder

Molecular weight:

242.08221

Ref: 45-1491831

Estimated delivery in United States, on Tuesday 15 Oct 2024

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