Impurezas API

Nifedipine Nitrophenylpyridine Analog (Dimethyl 4-(2-nitrophenyl)-2,6-dimethylpyridine-3,5-dicarboxylate)

Torsemide Related Compound B (N-[(n-butylamino)carbonyl]-4-[(3-methylphenyl)amino]-3-pyridinesulfonamide)

Benazepril Related Compound C ((S)-2-{[(S)-1-(Carboxymethyl)-2-oxo-2,3,4,5-tetrahydro-1H-benzo[b]azepin-3-yl]amino}-4-phenylbutanoic acid)

Loxapine Related Compound A (3-Chloro-11-(4-methylpiperazin-1-yl)dibenzo[b,f][1,4]oxazepine)

Antazoline Related Compound A (N-(2-Aminoethyl)-2-[benzyl(phenyl)amino]acetamide)

Cyproheptadine Related Compound A (5H-dibenzo[a,d]cycloheptene)

Doxazosin Related Compound F (N,N'-bis(1,4-benzodioxane-2-carbonyl)piperazine)

Omeprazole Related Compound E (4-Methoxy-2-[[(RS)-(5-methoxy-1H-benzimidazol-2-yl)sulfinyl]methyl]-3,5-dimethylpyridine 1-oxide)

Cefotaxime Related Compound E ((Z)-2-(2-aminothiazol-4-yl)-N-{(5aR,6R)-1,7-dioxo-1,3,4,5a,6,7-hexahydroazeto[2,1-b]furo[3,4-d][1,3]thiazin-6-yl}-2-(methoxyimino)acetamide)

Iodixanol Related Compound E (5-{N-[3-(N-{3-carbamoyl-5-[(2,3-dihydroxypropyl)carbamoyl]-2,4,6-triiodophenyl}acetamido)-2-hydroxypropyl]acetamido}-N1,N3-bis(2,3-dihydroxypropyl)-2,4,6-triiodoisophthalamide)

R-Methotrexate (Sodium (R)-2-(4-{[(2,4-Diaminopteridin-6-yl)methyl](methyl)amino}benzamido)pentanedioate)

Dexketoprofen Tromethamine

Procarbazine Related Compound A (4-Formyl-N-isopropylbenzamide)

Glycopyrrolate Erythro Isomer ((RS)-3-[(RS)-2-cyclopentyl-2-hydroxy-2-phenylacetoxy]-1,1-dimethylpyrrolidinium bromide)

Sotalol Related Compound B (N-(4-Formylphenyl)methanesulfonamide)

Carbinoxamine Related Compound B ((4-Chlorophenyl)(pyridin-2-yl)methanol)

Nepafenac Related Compound B (7-Benzoylindolin-2-one)

6,7-Dehydronorethindrone Acetate (3-oxo-19-nor-17α-pregn-4,6-dien-20-yn-17-yl acetate)

Efavirenz Related Compound A ((S)-2-(2-amino-5-chlorophenyl)-4-cyclopropyl-1,1,1-trifluorobut-3-yn-2-ol)

Miconazole Related Compound F (1-{2-[(3,4-dichlorobenzyl)oxy]-2-(2,4-dichlorophenyl)ethyl}-1H-imidazole)

Acamprosate Related Compound B

Mecamylamine Related Compound A (N,1,7,7-Tetramethylbicyclo[2.2.1]heptan-2-amine hydrochloride)

Praziquantel Related Compound A (2-benzoyl-1,2,3,6,7,11b-hexahydro-4H-pyrazino [2,1-a]isoquinolin-4-one)

Anhydro Simvastatin ((1S,3R,7S,8S,8aR)-3,7-Dimethyl-8-[2-[(2R)-6-oxo-3,6-dihydro-2H-pyran-2-yl]ethyl]-1,2,3,7,8,8a-hexahydronaphthalen-1-yl 2,2-dimethylbutanoate)

Fluorescein Related Compound C (2-(2,4-Dihydroxybenzoyl)benzoic acid)

Aztreonam E-Isomer

Cefadroxil Related Compound B ((6R,7R)-7-amino-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid)

Glycopyrrolate Related Compound L (Methyl 2-cyclopentyl-2-hydroxy-2-phenylacetate)

Moxifloxacin Related Compound F (1-Cyclopropyl-6-fluoro-8-methoxy-7-(1-methyloctahydro-6H-pyrrolo[3,4-b]pyridin-6-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid)

Candesartan Cilexetil Related Compound F (1-(Cyclohexyloxycarbonyloxy)ethyl 2-ethoxy-1-{[2'-(2-ethyl-2H-tetrazol-5-yl)biphenyl-4-yl]methyl}-1H-benzimidazole-7-carboxylate)

Allopurinol Related Compound A (3-Amino-4-carboxamidopyrazole Hemisulfate)

Linezolid Related Compound A ((R)-5-(azidomethyl)-3-(3-fluoro-4-morpholinophenyl)oxazolidin-2-one)

Valacyclovir Related Compound F (2-hydroxyethyl valinate para-toluenesulfonate salt)

Modafinil Sulfone

Chloroquine Related Compound D (7-Chloro-4-{[4-(ethylamino)-1-methylbutyl] amino} quinoline)

Fluoxetine Related Compound A (N-methyl-3-phenyl-3-[(α, α, α-trifluoro-m-tolyl)oxy]propylamine hydrochloride)

Roflumilast Related Compound A (3-(Cyclopropylmethoxy)-N-(3,5-dichloropyridin-4-yl)-4-hydroxybenzamide)

Rivastigmine Related Compound E ((S)-1-(3-{[Ethyl(methyl)carbamoyl]oxy}phenyl)-N,N,N-trimethylethanaminium chloride)

Losartan Related Compound A (2-Butyl-4-chloro-1H-imidazole-5-carbaldehyde)

Felodipine Related Compound A (3-Ethyl 5-methyl 4-(2,3-dichlorophenyl)-2,6-dimethylpyridine-3,5-dicarboxylate)

Paclitaxel Related Compound A (Cephalomannine)

Estazolam Related Compound A (5-Chloro-2-(3-chloromethyl-4H-1,2,4-triazol-4-yl)-benzophenone)

[Met(O)14]-Exenatide

R-Ofloxacin ((R)-9-fluoro-2,3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-7H-pyrido[1,2,3-de][1,4]benzoxazine-6-carboxylic acid)

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

Meloxicam Related Compound B (5-Methylthiazol-2-amine)

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

Dimenhydrinate Related Compound E (8-chloro-3,7-dihydro-1,3,7-trimethyl-1H-purine-2,6-dione)

Cefaclor δ-3 Isomer

Phentermine Related Compound A (N-(2-Methyl-1-phenylpropan-2-yl)formamide)

Gonadorelin Acetate Related Compound A (5-Oxo-L-prolyl-L-histidyl-L-tryptophyl-L-seryl-L-tyrosylglycyl-L-leucyl-L-arginyl-L-prolylglycine)

Memantine Related Compound F (3-Amino-5,7-dimethyladamantan-1-ol hydrochloride)

Levofloxacin Related Compound C ((S)-ethyl 9-fluoro-2,3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylate)

Pramipexole Related Compound G ((6S,7S)-2-Amino-6-(propylamino)-4,5,6,7-tetrahydrobenzothiazol-7-ol)

Methylprednisolone Related Compound C (11β-Hydroxy-6α-methylandrosta-1,4-diene-3,17-dione)

Prazosin Related Compound D (Furan-2-yl(piperazin-1-yl)methanone)

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

Lamotrigine Related Compound D (N-[5-amino-6-(2,3-dichlorophenyl)-1,2,4-triazin-3-yl]-2,3-dichlorobenzamide)

Decitabine Related Compound A (1-O-Acetyl-3,5-di-O-(4-chlorobenzoyl)-2-deoxy-D-ribofuranose)

Cetirizine Related Compound B (2-(4-Benzhydrylpiperazin-1-yl)ethan-1-ol dihydrochloride)

Nateglinide Related Compound A (trans-4-isopropylcyclohexanecarboxylic acid)

Ecamsule Related Compound B (4-(Hydroxymethyl)benzoic acid)

Ganciclovir Mono-N-methyl Valinate (2-(RS)-[(Guanin-9-yl)methoxy]-3-hydroxypropyl N-methyl-L-valinate hydrochloride)

Potassium Chloride

Rivastigmine Tartrate R-Isomer ((R)-3-[1-(Dimethylamino)ethyl]phenyl ethyl(methyl)carbamate, hydrogen tartrate)

Bisoprolol Related Compound F (2-Isopropoxyethyl 4-[2-hydroxy-3-(isopropylamino)propoxy]benzoate)

Linezolid R-Isomer (N-{[(R)-3-(3-Fluoro-4-morpholinophenyl)-2-oxo-5-oxazolidinyl]methyl}acetamide)

Desogestrel Related Compound C (13-Ethyl-11-methylene-18,19-dinor-17α-pregn-4-en-20-yn-17-ol-3-one)

Irinotecan Related Compound B ((S)-4,11-diethyl-4,9-dihydroxy-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinoline-3,14(4H,12H)-dione)

Memantine Related Compound D (1-Bromo-3,5-dimethyladamantane)

Dipyridamole Related Compound A (2,2'-{[4,6,8-Tri(piperidin-1-yl)pyrimido[5,4-d]pyrimidin-2-yl]azanediyl}diethanol)

Losartan Related Compound C (2-Butyl-4-chloro-1-[[2'-(1H-tetrazol-5-yl)biphenyl-4-yl]methyl]-1H-imidazol-5-carbaldehyde)

Bendamustine Related Compound B (4-(1-Methyl-5-morpholino-1H-benzimidazol-2-yl)butanoic acid hydrochloride)

Uridine (1-β-D-Ribofuranosylpyrimidine-2,4(1H,3H)-dione)

Efavirenz Racemic ((+/-)-6-chloro-4-(cyclopropylethynyl)-1,4-dihydro-4-(trifluoromethyl)-2H-3,1-benzoxazin-2-one)

Amifostine Disulfide (1,3-Propanediamine, N,N-(dithiodi-2,1-ethanediyl)bis, tetrahydrochloride)

Levofloxacin Related Compound E ((S)-9-Fluoro-2,3-dihydro-3-methyl-10-[2-(methylamino)ethylamino]-7-oxo-7H-pyrido[1,2,3-de][1,4]benzoxazine-6-carboxylic acid hydrochloride)

Butyl 3-(butylamino)-4-phenoxy-5-sulfamoylbenzoate

Allopurinol Related Compound C (5-(4H-1,2,4-triazol-4-yl)-1H-pyrazole-4-carboxamide)

Nateglinide Related Compound B (N-(trans-4-isopropylcyclohexanecarbonyl)-L-phenylalanine)

Myristylpyridinium Chloride (1-Tetradecylpyridinium chloride)

4-Chlorobenzophenone (4-Chlorobenzophenone)

Glipizide Related Compound B (6-methyl-N-[2-(4-sulphamoylphenyl)ethyl]pyrazine-2-carboxamide)

Quazepam Related Compound A (7-Chloro-5-(2-fluorophenyl)-1,3-dihydro-1-(2,2,2-trifluoroethyl)-2H-1,4-benzodiazepine-2-one)

Aprepitant Related Compound B (3-[[(2S,3R)-2-[(S)-1-[3,5-Bis(trifluoromethyl)phenyl]ethoxy]-3-(4-fluorophenyl)morpholino]methyl]-1H-1,2,4-triazol-5(4H)-one)

Metoprolol Related Compound C (4-[2-Hydroxy-3-(isopropylamino)propoxy]benzaldehyde hydrochloride)

Carbinoxamine Related Compound A ((4-Chlorophenyl)(pyridin-2-yl)methanone)

Milrinone Related Compound A (1,6-Dihydro-2-methyl-6-oxo(3,4'-bipyridine)-5-carboxamide)

Norgestrel Related Compound L (13-Ethylgon-4-ene-3,17-dione)

γ-Aminobutyric Acid

Zolmitriptan Related Compound A ((S)-4-({3-[2-(Methylamino)ethyl]-1H-indol-5-yl}methyl)oxazolidin-2-one)

[D-His1]-Exenatide

Norscopolamine ((1R ,2R ,4S ,5S ,7s )-3-Oxa-9-azatricyclo[3.3.1.0^2,4]nonan-7-yl (S)-3-hydroxy-2-phenylpropanoate)

Ethyl 4-nitrobenzoate

Brimonidine Related Compound A (5-Bromoquinoxalin-6-amine)

Oxazepam Related Compound B (7-Chloro-2-oxo-5-phenyl-2,3-dihydro-1H-benzodiazepin-3-yl acetate)

Mafenide Related Compound A (4-Formylbenzenesulfonamide)

Nebivolol Related Compound B (See USP Certificate for full Chemical Name)

Lorazepam Related Compound D (6-Chloro-4-(o-chlorophenyl)-2-quinazolinecarboxylic Acid)

Nicardipine Related Compound C (Dimethyl 2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate)