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.
Read more
Sulfamethoxazole Related Compound A (N-{4-[N-(5-methylisoxazol-3-yl)sulfamoyl]phenyl}acetamide)
CAS:21312-10-7
Sulfonamides, nesoi
Formula:
C12H13N3O4S
Color and Shape:
White Crystalline Powder
Molecular weight:
295.06268
Estimated delivery in United States, on Tuesday 15 Oct 2024
Nicotine Related Compound E ((1RS,2S)-1-methyl-2-(pyridin-3-yl)pyrrolidine 1-oxide oxalate)
Vegetable alkaloids, natural or reproduced by synthesis, their salts and other derivatives, nesoi
Formula:
C10H14N2O
Color and Shape:
White Off-White Powder
Molecular weight:
178.11061
Estimated delivery in United States, on Tuesday 15 Oct 2024
Ethambutol Related Compound B (((2R,2'R)-2,2'-[Ethane-1,2-diylbis(azanediyl)]dibutan-1-ol) dihydrochloride)
CAS:134566-79-3
Amino-alcohols, other than those containing more than one kind of oxygen function, their ethers and …
Formula:
C10H24N2O2· 2HCl
Color and Shape:
White Solid
Molecular weight:
204.18378
Estimated delivery in United States, on Tuesday 15 Oct 2024
Nevirapine Related Compound C (5,11-Dihydro-6H-11-propyl-4-methyl-dipyrido[3,2-b:2',3'-e] [1,4]diazepin-6-one)
Aromatic or modified aromatic drugs with nitrogen hetero-atom(s) only, not elsewhere specified or included
Formula:
C15H16N4O
Color and Shape:
Powder
Molecular weight:
268.13241
Estimated delivery in United States, on Tuesday 15 Oct 2024
Repaglinide Related Compound B (3-Ethoxy-4-ethoxycarbonylphenylacetic acid)
CAS:99469-99-5
Carboxylic acids with additional oxygen function and th
Formula:
C13H16O5
Color and Shape:
Powder
Molecular weight:
252.09977
Estimated delivery in United States, on Tuesday 15 Oct 2024
Lorazepam Related Compound C (6-Chloro-4-(o-chlorophenyl)-2-quinazolinecarboxaldehyde)
CAS:93955-15-8
Aromatic or modified aromatic drugs with nitrogen hetero-atom(s) only, not elsewhere specified or included
Formula:
C15H8Cl2N2O
Color and Shape:
White Crystalline Solid
Molecular weight:
302.00137
Estimated delivery in United States, on Tuesday 15 Oct 2024
Dipyridamole Related Compound D (2,2'-({6-[(2-Hydroxyethyl)amino]-4,8-di(piperidin-1-yl)pyrimido[5,4-d]pyrimidin-2-yl}azanediyl)diethanol)
CAS:1176886-12-6
Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, …
Formula:
C22H36N8O3
Color and Shape:
Yellow Powder
Molecular weight:
460.29104
Estimated delivery in United States, on Tuesday 15 Oct 2024
Xylometazoline Related Compound A (N-(2-Aminoethyl)-2-[4-(tert-butyl)-2,6-dimethylphenyl]acetamide)
CAS:94266-17-8
Sulfonamides used as drugs
Formula:
C16H26N2O
Color and Shape:
Off-White Solid
Molecular weight:
262.20451
Estimated delivery in United States, on Tuesday 15 Oct 2024
Cefepime Related Compound E (1-{[(6R,7R)-7-Amino-2-carboxy-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl]methyl}-1-methylpyrrolidin-1-ium chloride)
CAS:103121-85-3
Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds, nesoi
Formula:
C13H20ClN3O3S
Color and Shape:
White Off-White Powder
Molecular weight:
333.09139
Estimated delivery in United States, on Tuesday 15 Oct 2024
Nicardipine Related Compound B (3-{2-[Benzyl(methyl)amino]ethyl} 5-methyl 2,6-dimethyl-4-(3-nitrophenyl)pyridine-3,5-dicarboxylate oxalate)
Compounds containing an unfused pyridine ring in the structure, nesoi
Formula:
C26H27N3O6·C2H2O4
Color and Shape:
Off-White Solid
Molecular weight:
567.18529
Estimated delivery in United States, on Tuesday 15 Oct 2024
Granisetron Related Compound A (2-methyl-N-[(1R,3r,5S)-9-methyl-9-azabicyclo[3.3.1]non-3-yl]-2H-indazole-3-carboxamide)
CAS:127472-42-8
Compounds containing an unfused pyridine ring in the structure, nesoi
Formula:
C18H24N4O
Color and Shape:
White Off-White Powder
Molecular weight:
312.19501
Estimated delivery in United States, on Tuesday 15 Oct 2024
Memantine Related Compound C (1-Chloro-3,5-dimethyladamantane)
CAS:707-36-8
Other halogenated derivatives of cyclanic, cyclenic or cycloterpenic hydrocarbons, excluding hexachlorocyclohexane
Formula:
C12H19Cl
Color and Shape:
Light Yellow Liquid
Molecular weight:
198.11753
Estimated delivery in United States, on Tuesday 15 Oct 2024
Azathioprine Related Compound A (1-Methyl-4-nitro-1H-imidazol-5-amine)
CAS:4531-54-8
Compounds containing an unfused imidazole ring, whether or not hydrogenated, in the structure, nesoi
Formula:
C4H6N4O2
Color and Shape:
Yellow Powder
Molecular weight:
142.04908
Estimated delivery in United States, on Tuesday 15 Oct 2024
Dobutamine Related Compound C (N-(3,4-Dimethoxyphenethyl)-4-(4-methoxyphenyl)butan-2-amine hydrochloride)
CAS:51062-14-7
Amino-naphthols and other amino-phenols, their ethers and esters, other than those cont more than one …
Formula:
C21H29NO3·HCl
Color and Shape:
White Powder
Molecular weight:
379.19142
Estimated delivery in United States, on Tuesday 15 Oct 2024
Acetaminophen Related Compound A (4-(acetylamino)phenyl acetate)
CAS:2623-33-8
Aromatic cyclic amides (including cyclic carbamates) and their derivatives; salts thereof
Formula:
C10H11NO3
Color and Shape:
White Powder
Molecular weight:
193.07389
Estimated delivery in United States, on Tuesday 15 Oct 2024
Azacitidine Related Compound A (4-Amino-1,3,5-triazin-2(1H)-one)
CAS:931-86-2
Compounds (excluding melamine) containing an unfused triazine ring (whether or not hydrogenated) in the structure
Formula:
C3H4N4O
Color and Shape:
White Off-White Powder
Molecular weight:
112.03851
Estimated delivery in United States, on Tuesday 15 Oct 2024
Moexipril Related Compound F ((S)-2-[(S)-1-ethoxy-1-oxo-4-phenylbutan-2-ylamino]propanoic acid)
CAS:82717-96-2
Aromatic amino-alcohol-phenols, aromatic amino-acid-phenols and other aromatic amino compounds with oxygen function
Formula:
C15H21NO4
Color and Shape:
White Powder
Molecular weight:
279.14706
Estimated delivery in United States, on Tuesday 15 Oct 2024
Pramipexole Related Compound F ((6S,7R)-2-Amino-6-(propylamino)-4,5,6,7-tetrahydrobenzothiazol-7-ol)
CAS:2166216-34-6
Compounds containing a benzothiazole ring-system (whether or not hydrogenated), not further fused
Formula:
C10H17N3OS
Color and Shape:
Off-White Solid
Molecular weight:
227.10923
Estimated delivery in United States, on Tuesday 15 Oct 2024
Cidofovir Related Compound A (1-[(S)-3-Hydroxy-2-(O-ethylphosphonomethoxy)propyl]cytosine)
CAS:1312776-50-3
Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, …
Formula:
C10H18N3O6P
Color and Shape:
White Off-White Powder
Molecular weight:
307.09332
Estimated delivery in United States, on Tuesday 15 Oct 2024
Nicardipine Related Compound D (Bis{2-[benzyl(methyl)amino]ethyl} 2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate dihydrochloride)
CAS:71784-27-5
Compounds containing an unfused pyridine ring in the structure, nesoi
Formula:
C35H40N4O6· 2HCl
Color and Shape:
Yellow Powder
Molecular weight:
612.29479
Estimated delivery in United States, on Tuesday 15 Oct 2024