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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
Aripiprazole Related Compound C (1-(2,3-dichlorophenyl)piperazine hydrochloride)
REF: 45-1042656CAS: 119532-26-2 		- - -1,292.00 €Fri 27 Dec 24
Allopurinol Related Compound F (ethyl-(E/Z)-3-(2-carbethoxy-2-cyanoethenyl)amino-1H-pyrazole-4-carboxylate)
REF: 45-1013079CAS: 321571-07-7 		- - -1,371.00 €Fri 27 Dec 24
Phenoxybenzamine Alcohol (2-[Benzyl(1-phenoxypropan-2-yl)amino]ethan-1-ol)
REF: 45-1525999CAS: 101-45-1 		- - -1,583.00 €Fri 27 Dec 24
2-Mononitroglycerin
REF: 45-1445584CAS: 620-12-2 		- - -1,328.00 €Fri 27 Dec 24
Metoprolol Related Compound A ((+/-)1-(ethylamino)-3-[4-(2-methoxyethyl)phenoxy]-propan-2-ol)
REF: 45-1441232CAS: 109632-08-8 		- - -1,583.00 €Fri 27 Dec 24
Sulfamethoxazole Related Compound B (4-amino-N-{4-[N-(5-methylisoxazol-3-yl)sulfamoyl]phenyl}benzenesulfonamide)
REF: 45-1631522CAS: 135529-16-7 		- - -1,699.00 €Fri 27 Dec 24
Famciclovir Related Compound A (2-[2-(2-Amino-9H-purin-9-yl)ethyl]propane-1,3-diol] hydrochloride)
REF: 45-1269174CAS: 246021-75-0 		- - -1,371.00 €Fri 27 Dec 24
Ranitidine Related Compound C (N-[2-[[[5-[(dimethylamino)methyl]-2-furanyl]methyl]sulfinyl]ethyl]-N-methyl-2-nitro-1,1-ethenediamine)
REF: 45-1598700CAS: 73851-70-4 		- - -1,371.00 €Fri 27 Dec 24
Dimenhydrinate Related Compound E (8-chloro-3,7-dihydro-1,3,7-trimethyl-1H-purine-2,6-dione)
REF: 45-1206017CAS: 4921-49-7 		- - -1,647.00 €Fri 27 Dec 24
Budesonide Related Compound G (16α,17-[butylidenebis(oxy)]-11β, 21-dihydroxypregna-4-ene-3,20-dione)
REF: 45-1078267CAS: 137174-25-5 		- - -1,371.00 €Fri 27 Dec 24
Nitrofurfural Diacetate
REF: 45-1465503CAS: 92-55-7 		- - -1,477.00 €Fri 27 Dec 24
Triamterene Related Compound B (2,7-diamino-4-hydroxy-6-phenylpteridine)
REF: 45-1680029CAS: 19375-89-4 		- - -1,531.00 €Fri 27 Dec 24
Sodium Picosulfate Related Compound A (4-[(Pyridin-2-yl)(4-hydroxyphenyl)methyl]phenyl sodium sulfate)
REF: 45-1614589CAS: 32500-19-9 		- - -1,371.00 €Fri 27 Dec 24
Meloxicam Related Compound B (5-Methylthiazol-2-amine)
REF: 45-1379423CAS: 7305-71-7 		- - -1,477.00 €Fri 27 Dec 24
Paliperidone Related Compound A (3-Ethyl-9-hydroxy-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-α]pyrimidin-4-one)
REF: 45-1491818CAS: 849903-79-3 		- - -1,292.00 €Fri 27 Dec 24
Oxaliplatin Related Compound D (cis-[(1S,2S)-1,2-cyclohexanediamine-N,N'][oxalato(2-)-O,O']platinum)
REF: 45-1481248CAS: 61758-77-8 		- - -To inquireFri 27 Dec 24
Torsemide Related Compound A (4-[(3-methylphenyl)amino]-3-pyridinesulfonamide)
REF: 45-1672315CAS: 72811-73-5 		- - -1,611.00 €Fri 27 Dec 24
Formyl Penicillamine (2-Formamido-3-mercapto-3-methylbutanoic acid)
REF: 45-1286311CAS: 158411-82-6 		- - -1,371.00 €Fri 27 Dec 24
Praziquantel Related Compound C (2-(N-formylhexahydrohippuroyl)-1,2,3,4-tetrahydroisoquinolin-1-one)
REF: 45-1554670CAS: 125273-88-3 		- - -1,477.00 €Fri 27 Dec 24
Methotrexate Related Compound E (4-{[(2,4-Diaminopteridin-6-yl)methyl](methyl)amino}benzoic acid, hemihydrochloride)
REF: 45-1414058CAS: 70844-48-3 		- - -1,552.00 €Fri 27 Dec 24
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Aripiprazole Related Compound C (1-(2,3-dichlorophenyl)piperazine hydrochloride)

CAS:119532-26-2
Compounds containing a pyrimidine ring, whether or not hydrogenated, or piperazine ring in the structure, …
Formula:
C10H12Cl2N2·HCl
Color and Shape:
White Powder
Molecular weight:
230.03775

Ref: 45-1042656

Estimated delivery in United States, on Friday 27 Dec 2024
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Allopurinol Related Compound F (ethyl-(E/Z)-3-(2-carbethoxy-2-cyanoethenyl)amino-1H-pyrazole-4-carboxylate)

CAS:321571-07-7
Compounds containing an unfused pyrazole ring, whether or not hydrogenated, in the structure, nesoi
Formula:
C12H14N4O4
Color and Shape:
Powder
Molecular weight:
278.1015

Ref: 45-1013079

Estimated delivery in United States, on Friday 27 Dec 2024
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Phenoxybenzamine Alcohol (2-[Benzyl(1-phenoxypropan-2-yl)amino]ethan-1-ol)

CAS:101-45-1
Aromatic amino-alcohol-phenols, aromatic amino-acid-phenols and other aromatic amino compounds with oxygen function
Formula:
C18H23NO2
Color and Shape:
Colorless Liquid
Molecular weight:
285.17288

Ref: 45-1525999

Estimated delivery in United States, on Friday 27 Dec 2024
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2-Mononitroglycerin

CAS:620-12-2
Esters of other inorganic acids of nonmetals & their salts, their halogenated/sulfonated/nitrated/nitrosated derivs, except of …
Formula:
C3H7NO5
Color and Shape:
Clear Colorless Liquid
Molecular weight:
137.03242

Ref: 45-1445584

Estimated delivery in United States, on Friday 27 Dec 2024
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Metoprolol Related Compound A ((+/-)1-(ethylamino)-3-[4-(2-methoxyethyl)phenoxy]-propan-2-ol)

CAS:109632-08-8
Amino-alcohols, other than those containing more than one kind of oxygen function, their ethers and …
Formula:
C14H23NO3
Color and Shape:
White Clumpy Powder
Molecular weight:
253.16779

Ref: 45-1441232

Estimated delivery in United States, on Friday 27 Dec 2024
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Sulfamethoxazole Related Compound B (4-amino-N-{4-[N-(5-methylisoxazol-3-yl)sulfamoyl]phenyl}benzenesulfonamide)

CAS:135529-16-7
Sulfonamides, nesoi
Formula:
C16H16N4O5S2
Color and Shape:
Off-White White Powder
Molecular weight:
408.05621

Ref: 45-1631522

Estimated delivery in United States, on Friday 27 Dec 2024
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Famciclovir Related Compound A (2-[2-(2-Amino-9H-purin-9-yl)ethyl]propane-1,3-diol] hydrochloride)

CAS:246021-75-0
Compounds containing a pyrimidine ring, whether or not hydrogenated, or piperazine ring in the structure, …
Formula:
C10H15N5O2·HCl
Color and Shape:
Cream Off-White Solid
Molecular weight:
237.12257

Ref: 45-1269174

Estimated delivery in United States, on Friday 27 Dec 2024
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Ranitidine Related Compound C (N-[2-[[[5-[(dimethylamino)methyl]-2-furanyl]methyl]sulfinyl]ethyl]-N-methyl-2-nitro-1,1-ethenediamine)

CAS:73851-70-4
Compounds containing an unfused furan ring (whether or
Formula:
C13H22N4O4S
Color and Shape:
Off-White Solid
Molecular weight:
330.13618

Ref: 45-1598700

Estimated delivery in United States, on Friday 27 Dec 2024
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Dimenhydrinate Related Compound E (8-chloro-3,7-dihydro-1,3,7-trimethyl-1H-purine-2,6-dione)

CAS:4921-49-7
Vegetable alkaloids, natural or reproduced by synthesis, their salts and other derivatives, nesoi
Formula:
C8H9ClN4O2
Color and Shape:
White Off-White Powder
Molecular weight:
228.0414

Ref: 45-1206017

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Budesonide Related Compound G (16α,17-[butylidenebis(oxy)]-11β, 21-dihydroxypregna-4-ene-3,20-dione)

CAS:137174-25-5
Adrenal cortical hormones and their derivatives nesoi
Formula:
C25H36O6
Color and Shape:
Off-White Powder
Molecular weight:
432.25119

Ref: 45-1078267

Estimated delivery in United States, on Friday 27 Dec 2024
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Nitrofurfural Diacetate

CAS:92-55-7
Compounds containing an unfused furan ring, whether or not hydrogenated, in the structure, nesoi
Formula:
C9H9NO7
Color and Shape:
Powder
Molecular weight:
243.0379

Ref: 45-1465503

Estimated delivery in United States, on Friday 27 Dec 2024
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Triamterene Related Compound B (2,7-diamino-4-hydroxy-6-phenylpteridine)
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Triamterene Related Compound B (2,7-diamino-4-hydroxy-6-phenylpteridine)

CAS:19375-89-4
Aromatic or modified aromatic drugs with nitrogen heter
Formula:
C12H10N6O
Color and Shape:
Light Yellow Crystalline Powder
Molecular weight:
254.09161

Ref: 45-1680029

Estimated delivery in United States, on Friday 27 Dec 2024
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Sodium Picosulfate Related Compound A (4-[(Pyridin-2-yl)(4-hydroxyphenyl)methyl]phenyl sodium sulfate)

CAS:32500-19-9
Compounds containing an unfused pyridine ring in the structure, nesoi
Formula:
C18H14NNaO5S
Color and Shape:
White Powder
Molecular weight:
379.04904

Ref: 45-1614589

Estimated delivery in United States, on Friday 27 Dec 2024
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Meloxicam Related Compound B (5-Methylthiazol-2-amine)
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Meloxicam Related Compound B (5-Methylthiazol-2-amine)

CAS:7305-71-7
Compounds containing an unfused thiazole ring (whether or not hydrogenated) in the structure
Formula:
C4H6N2S
Color and Shape:
Light Yellow Light Brown Crystalline Powder
Molecular weight:
114.02517

Ref: 45-1379423

Estimated delivery in United States, on Friday 27 Dec 2024
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Paliperidone Related Compound A (3-Ethyl-9-hydroxy-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-α]pyrimidin-4-one)

CAS:849903-79-3
Compounds containing a pyrimidine ring, whether or not hydrogenated, or piperazine ring in the structure, …
Formula:
C11H16N2O2
Color and Shape:
Off-White Powder
Molecular weight:
208.12118

Ref: 45-1491818

Estimated delivery in United States, on Friday 27 Dec 2024
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Oxaliplatin Related Compound D (cis-[(1S,2S)-1,2-cyclohexanediamine-N,N'][oxalato(2-)-O,O']platinum)

CAS:61758-77-8
Inorganic or organic compounds of precious metals, whether or not chemically defined, or amalgams of …
Formula:
C8H14N2O4Pt
Color and Shape:
White Off-White Crystalline Powder
Molecular weight:
397.06015

Ref: 45-1481248

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Torsemide Related Compound A (4-[(3-methylphenyl)amino]-3-pyridinesulfonamide)

CAS:72811-73-5
Sulfonamides, nesoi
Formula:
C12H13N3O2S
Color and Shape:
White Powder
Molecular weight:
263.07285

Ref: 45-1672315

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Formyl Penicillamine (2-Formamido-3-mercapto-3-methylbutanoic acid)

CAS:158411-82-6
Organo-sulfur compounds, nesoi
Formula:
C6H11NO3S
Color and Shape:
White Powder
Molecular weight:
177.04596

Ref: 45-1286311

Estimated delivery in United States, on Friday 27 Dec 2024
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Praziquantel Related Compound C (2-(N-formylhexahydrohippuroyl)-1,2,3,4-tetrahydroisoquinolin-1-one)

CAS:125273-88-3
Lactams not elsewhere specified or included
Formula:
C19H22N2O4
Color and Shape:
White Crystalline Powder
Molecular weight:
342.15796

Ref: 45-1554670

Estimated delivery in United States, on Friday 27 Dec 2024
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Methotrexate Related Compound E (4-{[(2,4-Diaminopteridin-6-yl)methyl](methyl)amino}benzoic acid, …
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Methotrexate Related Compound E (4-{[(2,4-Diaminopteridin-6-yl)methyl](methyl)amino}benzoic acid, hemihydrochloride)

CAS:70844-48-3
Compounds containing a pyrimidine ring, whether or not hydrogenated, or piperazine ring in the structure, …
Formula:
C15H15N7O2·5HCl
Color and Shape:
Yellow Tan Orange Solid
Molecular weight:
325.12872

Ref: 45-1414058

Estimated delivery in United States, on Friday 27 Dec 2024
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