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
Hydroxyzine Related Compound A (1-[(4-Chlorophenyl)phenylmethyl]piperazine) REF: 45-1333058CAS: 303-26-4	- - -	1,477.00 €	Fri 27 Dec 24
Fludeoxyglucose Related Compound A (4,7,13,16,21,24-hexaoxa-1,10-diazabicyclo[8.8.8]hexacosane) REF: 45-1272918CAS: 23978-09-8	- - -	1,619.00 €	Fri 27 Dec 24
Tacrolimus Related Compound A (See USP Certificate for full Chemical Name) REF: 45-1642813CAS: 135635-46-0	- - -	1,603.00 €	Fri 27 Dec 24
Valproic Acid Related Compound A (2-allylpent-4-enoic acid) REF: 45-1708729CAS: 99-67-2	- - -	1,439.00 €	Fri 27 Dec 24
Cloxacillin Related Compound D (3-(2-Chlorophenyl)-5-methylisoxazole-4-carboxylic acid) REF: 45-1144951CAS: 23598-72-3	- - -	1,477.00 €	Fri 27 Dec 24
Enalapril Related Compound H (1-{N-[(S)-1-Ethoxycarbonyl-3-cyclohexylpropyl]-L-alanyl}-L-proline, maleate (1:1)) REF: 45-1235365	- - -	1,398.00 €	Fri 27 Dec 24
Valsartan Related Compound A (N-Valeryl-N-{[2'-(1H-tetrazole-5-yl)biphenyl-4-yl]methyl}D-valine) REF: 45-1708773CAS: 137862-87-4	- - -	1,728.00 €	Fri 27 Dec 24
Palonosetron Related Compound E (2-[(3S)-Quinuclidin-3-yl]-2,4,5,6-tetrahydro-1H-benzo[de]isoquinolin-1-one hydrochloride) REF: 45-1492266CAS: 135729-55-4	- - -	1,477.00 €	Fri 27 Dec 24
Furosemide Related Compound B (4-Chloro-5-sulfamoylanthranilic Acid) REF: 45-1287030CAS: 3086-91-7	- - -	1,371.00 €	Fri 27 Dec 24
Metaraminol Enantiomer (3-[(1S,2R)-2-Amino-1-hydroxypropyl]phenol D-tartrate) REF: 45-1396058CAS: 27303-40-8	- - -	1,395.00 €	Fri 27 Dec 24
Trisalicylic Acid REF: 45-1696200CAS: 85531-17-5	- - -	1,426.00 €	Fri 27 Dec 24
Articaine Related Compound E (Methyl 3-[2-(isopropylamino)propanamido]-4-methylthiophene-2-carboxylate) REF: 45-1042962CAS: 1796888-45-3	- - -	1,441.00 €	Fri 27 Dec 24
Irinotecan Related Compound C (11-Ethyl-4-hydroxy-4-methyl-3,14-dioxo-3,4,12,14-tetrahydro-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinolin-9-yl (1,4'-bipiperidine)- 1'-carboxylate hydrochloride) REF: 45-1347642	- - -	1,441.00 €	Fri 27 Dec 24
Valacyclovir Related Compound E (2-[(2-amino-6-oxo-1,6-dihydro-9H-purin-9-yl)methoxy]ethyl N-[(benzyloxy)carbonyl]-L-valinate) REF: 45-1707872CAS: 124832-31-1	- - -	1,477.00 €	Fri 27 Dec 24
Methylprednisolone Hemisuccinate Related Compound D (11β,17-Dihydroxy-6α-methyl-3,20-dioxopregna-4-en-21-yl hydrogen succinate) REF: 45-1437042CAS: 119657-85-1	- - -	1,183.00 €	Fri 27 Dec 24
Vecuronium Bromide Related Compound B (Piperidinium, 1-[(2β, 3α, 5α, 16β, 17β)-3-acetyloxy-17-hydroxy-2-(1-piperidinyl)androstan-16-yl]-1-methyl bromide) REF: 45-1711177CAS: 50587-95-6	- - -	1,626.00 €	Fri 27 Dec 24
Candesartan Cilexetil Related Compound B (1-{[(Cyclohexyloxy)carbonyl]oxy}ethyl 3-({2'-(1H-tetrazol-5-yl)-[1,1'-biphenyl]-4-yl}methyl)-2-oxo-2,3-dihydro-1H-benzo[d]imidazole-4-carboxylate) REF: 45-1087825CAS: 869631-11-8	- - -	1,477.00 €	Fri 27 Dec 24
Olopatadine Related Compound B ((Z)-3-{2-(carboxymethyl)dibenzo[b,e]oxepin-11(6H)-ylidene}-N,N-dimethylpropan-1-amine oxide) REF: 45-1478425CAS: 173174-07-7	- - -	1,482.00 €	Fri 27 Dec 24
Chloropropyl Vanillin (4-(3-Chloropropoxy)-3-methoxybenzaldehyde) REF: 45-1117110CAS: 151719-92-5	- - -	589.00 €	Fri 27 Dec 24
Nateglinide Related Compound C (N-(cis-4-isopropylcyclohexanecarbonyl)-D-phenylalanine) REF: 45-1457630CAS: 105816-06-6	- - -	1,371.00 €	Fri 27 Dec 24

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Hydroxyzine Related Compound A (1-[(4-Chlorophenyl)phenylmethyl]piperazine)

CAS:303-26-4

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

Formula:

C₁₇H₁₉ClN₂

Color and Shape:

Powder

Molecular weight:

286.12368

Ref: 45-1333058

Estimated delivery in United States, on Friday 27 Dec 2024

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Fludeoxyglucose Related Compound A (4,7,13,16,21,24-hexaoxa-1,10-diazabicyclo[8.8.8]hexacosane)

CAS:23978-09-8

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

Formula:

C₁₈H₃₆N₂O₆

Color and Shape:

Colorless Light Yellow Crystalline Solid

Molecular weight:

376.25734

Ref: 45-1272918

Estimated delivery in United States, on Friday 27 Dec 2024

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Tacrolimus Related Compound A (See USP Certificate for full Chemical Name)

CAS:135635-46-0

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

Formula:

C₄₃H₆₉NO₁₂

Color and Shape:

White Light Yellow Powder

Molecular weight:

791.48198

Ref: 45-1642813

Estimated delivery in United States, on Friday 27 Dec 2024

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Valproic Acid Related Compound A (2-allylpent-4-enoic acid)

CAS:99-67-2

Unsaturated acyclic monocarboxylic acids, their anhydri

Formula:

C₈H₁₂O₂

Color and Shape:

Clear Liquid

Molecular weight:

140.08373

Ref: 45-1708729

Estimated delivery in United States, on Friday 27 Dec 2024

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Cloxacillin Related Compound D (3-(2-Chlorophenyl)-5-methylisoxazole-4-carboxylic acid)

CAS:23598-72-3

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

Formula:

C₁₁H₈ClNO₃

Color and Shape:

Powder

Molecular weight:

237.01927

Ref: 45-1144951

Estimated delivery in United States, on Friday 27 Dec 2024

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Enalapril Related Compound H (1-{N-[(S)-1-Ethoxycarbonyl-3-cyclohexylpropyl]-L-alanyl}-L-proline, maleate (1:1))

Heterocyclic compounds (excluding aromatic or modified aromatic) withnitrogen hetero-atom(s) only nesoi

Formula:

C₂₀H₃₄N₂O₅·C₄H₄O₄

Color and Shape:

White Powder

Molecular weight:

498.25773

Ref: 45-1235365

Estimated delivery in United States, on Friday 27 Dec 2024

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Valsartan Related Compound A (N-Valeryl-N-{[2'-(1H-tetrazole-5-yl)biphenyl-4-yl]methyl}D-valine)

CAS:137862-87-4

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

Formula:

C₂₄H₂₉N₅O₃

Color and Shape:

Off-White Powder

Molecular weight:

435.22704

Ref: 45-1708773

Estimated delivery in United States, on Friday 27 Dec 2024

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Palonosetron Related Compound E (2-[(3S)-Quinuclidin-3-yl]-2,4,5,6-tetrahydro-1H-benzo[de]isoquinolin-1-one hydrochloride)

CAS:135729-55-4

Lactams, nesoi

Formula:

C₁₉H₂₂N₂O·HCl

Color and Shape:

Yellow Solid

Molecular weight:

330.14989

Ref: 45-1492266

Estimated delivery in United States, on Friday 27 Dec 2024

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Furosemide Related Compound B (4-Chloro-5-sulfamoylanthranilic Acid)

CAS:3086-91-7

Sulfonamides, nesoi

Formula:

C₇H₇ClN₂O₄S

Color and Shape:

White Yellow Powder

Molecular weight:

249.98151

Ref: 45-1287030

Estimated delivery in United States, on Friday 27 Dec 2024

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Metaraminol Enantiomer (3-[(1S,2R)-2-Amino-1-hydroxypropyl]phenol D-tartrate)

CAS:27303-40-8

Other alkaloids,natural or reproduced by synthesis, and their salts, ethers,esters&other derivatives, nesoi

Formula:

C₉H₁₃NO₂C₄H₆O₆

Color and Shape:

Off-White Solid

Molecular weight:

167.09463

Ref: 45-1396058

Estimated delivery in United States, on Friday 27 Dec 2024

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Trisalicylic Acid

CAS:85531-17-5

Esters of salicylic acid and its salts not elsewhere specified or included

Formula:

C₂₁H₁₄O₇

Color and Shape:

White Powder

Molecular weight:

378.07395

Ref: 45-1696200

Estimated delivery in United States, on Friday 27 Dec 2024

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Articaine Related Compound E (Methyl 3-[2-(isopropylamino)propanamido]-4-methylthiophene-2-carboxylate)

CAS:1796888-45-3

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

Formula:

C₁₃H₂₀N₂O₃S

Color and Shape:

White Powder

Molecular weight:

284.11946

Ref: 45-1042962

Estimated delivery in United States, on Friday 27 Dec 2024

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Irinotecan Related Compound C (11-Ethyl-4-hydroxy-4-methyl-3,14-dioxo-3,4,12,14-tetrahydro-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinolin-9-yl (1,4'-bipiperidine)- 1'-carboxylate hydrochloride)

Vegetable alkaloids, natural or reproduced by synthesis, their salts and other derivatives, nesoi

Formula:

C₃₂H₃₆N₄O₆·HCl

Color and Shape:

Yellow Powder

Molecular weight:

608.24016

Ref: 45-1347642

Estimated delivery in United States, on Friday 27 Dec 2024

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Valacyclovir Related Compound E (2-[(2-amino-6-oxo-1,6-dihydro-9H-purin-9-yl)methoxy]ethyl N-[(benzyloxy)carbonyl]-L-valinate)

CAS:124832-31-1

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

Formula:

C₂₁H₂₆N₆O₆

Color and Shape:

White Crystalline Powder

Molecular weight:

458.19138

Ref: 45-1707872

Estimated delivery in United States, on Friday 27 Dec 2024

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Methylprednisolone Hemisuccinate Related Compound D (11β,17-Dihydroxy-6α-methyl-3,20-dioxopregna-4-en-21-yl hydrogen succinate)

CAS:119657-85-1

Adrenal cortical hormones and their derivatives nesoi

Formula:

C₂₆H₃₆O₈

Color and Shape:

White Off-White Solid

Molecular weight:

476.24102

Ref: 45-1437042

Estimated delivery in United States, on Friday 27 Dec 2024

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Vecuronium Bromide Related Compound B (Piperidinium, 1-[(2β, 3α, 5α, 16β, 17β)-3-acetyloxy-17-hydroxy-2-(1-piperidinyl)androstan-16-yl]-1-methyl bromide)

CAS:50587-95-6

Compounds containing an unfused pyridine ring in the structure, nesoi

Formula:

C₃₂H₅₅BrN₂O₃

Color and Shape:

Off-White Powder

Molecular weight:

594.33961

Ref: 45-1711177

Estimated delivery in United States, on Friday 27 Dec 2024

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Candesartan Cilexetil Related Compound B (1-{[(Cyclohexyloxy)carbonyl]oxy}ethyl 3-({2'-(1H-tetrazol-5-yl)-[1,1'-biphenyl]-4-yl}methyl)-2-oxo-2,3-dihydro-1H-benzo[d]imidazole-4-carboxylate)

CAS:869631-11-8

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

Formula:

C₃₁H₃₀N₆O₆

Color and Shape:

White Powder

Molecular weight:

582.22268

Ref: 45-1087825

Estimated delivery in United States, on Friday 27 Dec 2024

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Olopatadine Related Compound B ((Z)-3-{2-(carboxymethyl)dibenzo[b,e]oxepin-11(6H)-ylidene}-N,N-dimethylpropan-1-amine oxide)

CAS:173174-07-7

Aromatic heterocyclic compounds with oxygen hetero-atom(s) only, nesoi

Formula:

C₂₁H₂₃NO₄

Color and Shape:

White Powder

Molecular weight:

353.16271

Ref: 45-1478425

Estimated delivery in United States, on Friday 27 Dec 2024

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Chloropropyl Vanillin (4-(3-Chloropropoxy)-3-methoxybenzaldehyde)

CAS:151719-92-5

Halogenated, sulfonated, nitrated or nitrosated derivatives of products of heading 2912

Formula:

C₁₁H₁₃ClO₃

Color and Shape:

Powder

Molecular weight:

228.05532

Ref: 45-1117110

Estimated delivery in United States, on Friday 27 Dec 2024

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Nateglinide Related Compound C (N-(cis-4-isopropylcyclohexanecarbonyl)-D-phenylalanine)

CAS:105816-06-6

Aromatic cyclic amides (including cyclic carbamates) an

Formula:

C₁₉H₂₇NO₃

Color and Shape:

White Powder

Molecular weight:

317.19909

Ref: 45-1457630

Estimated delivery in United States, on Friday 27 Dec 2024

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