
APIs for research and impurities
Active Pharmaceutical Ingredients (APIs) are the substances in drugs responsible for their therapeutic effects. In this section, you will find a wide variety of APIs intended for research use. These compounds are essential for the development, testing, and validation of new pharmaceutical formulations. CymitQuimica offers high-quality APIs to support research in drug discovery and development.
Subcategories of "APIs for research and impurities"
- Alkaloids
- Aminoacids and derivatives
- Anthraquinones and derivatives
- Benzimidazole and Imidazole Derivatives
- Benzodiazepine Derivatives
- Carbohydrates and glycoconjugates
- Esters and Derivatives
- Fatty Acids and Lypidic Derivatives
- Flavonoids and Polyphenols
- Free Radicals and Oxidant/Reducing Agents
- Ketones and derivatives
- Natural and semi-synthetic antibiotics
- Nitriles and Cyano Derivatives
- Nitrosamines and Derivatives
- Nucleosides and Nucleotides
- Organic Phosphates and Phosphonates
- Organic Sulphonates and Sulphates
- Organometallics
- Others
- Peptides and Proteins
- Polymers and Derivatives
- Purines and Pyrimidine Derivatives
- Quinazoline and Quinoline Derivatives
- Quinones and Derivatives
- Salts and Derivatives of Active Pharmaceutical Ingredients (API)
- Steroids and Derivatives
- Sulfonamides and Derivatives
- Terpenoids and Derivatives
- Thiazolidinediones and Thiopyrans
- β-Adrenergic Compounds
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Products of "APIs for research and impurities"
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Octreotide Impurity 45 (1-D-Phe, L-lactic Acid Dimer)
Formula:C55H74N10O14S2·C2HF3O2Molecular weight:1163.37 114.02N,N-Didesmethyl N-tert-butoxycarbonyl diltiazem
CAS:Please enquire for more information about N,N-Didesmethyl N-tert-butoxycarbonyl diltiazem including the price, delivery time and more detailed product information at the technical inquiry form on this pageFormula:C25H30N2O6SPurity:Min. 95%Molecular weight:486.6 g/molCetirizine glycerol ester impurity
CAS:Cetirizine glycerol ester impurity is a drug product that is an analytical impurity. It is a natural, API impurity, and synthetic. The CAS number for this impurity is 1243652-36-9. Research and Development (R&D) of cetirizine glycerol ester impurity is required for the manufacture of pharmaceutical products. High purity cetirizine glycerol ester impurity can be used as a pharmacopoeia standard for HPLC analyses.Formula:C24H31ClN2O5Purity:Min. 95%Molecular weight:462.97 g/molTrandolapril EP Impurity E (Trandolapril USP Related Compound E, Trandolaprilat)
CAS:Formula:C22H30N2O5Color and Shape:Off-White SolidMolecular weight:402.49β-Nicotinamide Adenine Dinucleotide
CAS:Formula:C21H27N7O14P2Purity:98%Color and Shape:SolidMolecular weight:663.4251Ref: IN-DA0034IM
1g25.00€5g39.00€10g51.00€1kgTo inquire25g84.00€2kgTo inquire50g125.00€5kgTo inquire100g168.00€50kg11,339.00€250mg25.00€Furfenorex
CAS:Controlled ProductApplications An N-alkylated Amphetamine (A634240) derivative. It shows the same toxicokinetic activity as amphetaminil, benzphetamine, clobenzorex, dimethylamphetamine, ethylamphetamine, famprofazone, fencamine, fenethylline, fenproporex, mefenorex, mesocarb, methamphetamine (M258785), prenylamine, and selegiline (D288641). Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package References Hiramatsu, M., et al.: J. Pharmacol. Exp. Ther., 254, 521 (1990), Lin, L., et al.: Drug Metab. Dispos., 25, 1059 (1997), Wu, D., et al.: Biochem. Pharmacol., 53, 1605 (1997),Formula:C15H19NOColor and Shape:NeatMolecular weight:229.32Tesofensine
CAS:Controlled ProductApplications Tesofensine, is a serotonin-noradrenaline-dopamine reuptake inhibitor from the phenyltropane family of drugs, which is currently in clinical development for the treatment of obesity. References Hansen, H., et al.: Pharmacology, Biochemistry and Behavior, 110, 265 (2013);Formula:C17H23Cl2NOColor and Shape:NeatMolecular weight:328.28Esmolol isopropyl amine hydrochloride
CAS:Esmolol is a drug product that has been developed for the treatment of cardiac arrhythmias. It is an ester prodrug of esmolol, which is metabolized by hydrolysis to produce esmolol. Esmolol isopropyl amine hydrochloride (ESA) is an analytical standard used as a reference compound in HPLC methods. ESA is an impurity standard for API esmolol and CAS number 83356-59-6. Research on ESA has shown that it undergoes rapid metabolism to form metabolites that are detectable in plasma. Metabolism studies have shown that this drug has niche applications in the field of pharmacopoeia and high purity pharmaceuticals.Formula:C18H28N2O3·HClPurity:Min. 95%Molecular weight:322.44 g/molent-3-Methoxymorphinan Hydrochloride
CAS:Controlled ProductFormula:C17H23NO·ClHColor and Shape:NeatMolecular weight:293.83Avanafil Impurity 1
CAS:Formula:C18H22ClN5O3Color and Shape:White To Off-White SolidMolecular weight:391.86Phensuximide
CAS:Applications Phensuximide is an anticonvulsant drug, used in the treatment of neurological disorders stemming from the brain. Antiepileptic. References Ferrendelli, J. et al.: Annals Neuro., 5, 533 (1979); Bruno-Blanch, L. et al.: Bioorg. Med. Chem. Lett., 13, 2749 (2003);Formula:C11H11NO2Color and Shape:White SolidMolecular weight:189.21Oxyfluorfen Impurity 4
CAS:Formula:C15H13ClF3NO2Color and Shape:White To Off-White SolidMolecular weight:331.72Paracetamol EP Impurity D (Acetaminophen USP Related Compound D)
CAS:Formula:C8H9NOColor and Shape:Off-White SolidMolecular weight:135.17Lercanidipine Ethyl Methyl Ester Impurity (Impurity 5)
CAS:Formula:C18H20N2O6Color and Shape:Yellow SolidMolecular weight:360.37Norgestimate
CAS:Controlled ProductApplications Progestogen. In combination with estrogen as oral contraceptive. References Hahn, D.W., et al.: Contraception, 16, 541 (1977), Weintraub, H.S., et al.: J. Pharm. Sci., 67, 1406 (1978),Formula:C23H31NO3Color and Shape:White SolidMolecular weight:369.50Amiodarone EP Impurity C HCl (Deiodo Amiodarone HCl)
CAS:Formula:C25H30INO3·HClColor and Shape:White To Off-White SolidMolecular weight:519.42 36.46Delavirdine
CAS:Formula:C22H28N6O3SPurity:≥ 98.0%Color and Shape:White to off-white powderMolecular weight:456.56L-Valine, N-[(9H-fluoren-9-ylmethoxy)carbonyl]-3-[(triphenylmethyl)thio]-
CAS:Formula:C39H35NO4SPurity:97%Color and Shape:SolidMolecular weight:613.7645Ref: IN-DA002DH9
1g55.00€5g127.00€10g167.00€25g334.00€50g617.00€100gTo inquire250gTo inquire500gTo inquire100mg25.00€250mg29.00€Reboxetine mesylate
CAS:Formula:C19H23NO3·CH3SO3HPurity:≥ 97.0%Color and Shape:White to off-white powderMolecular weight:409.50Ambroxol hydrochloride impurity C
CAS:Ambroxol hydrochloride impurity C is a by-product of ambroxol hydrochloride. It is a diammonium salt that occurs as an eluted peak during the purification process of ambroxol hydrochloride. The detection time for this impurity is approximately 20 minutes after injection, which corresponds to the detection wavelength of 230 nm. Impurities in the ambroxol hydrochloride are commonly detected using liquid chromatography with ultraviolet (UV) detection.Formula:C13H16Br2N2O·HClPurity:Min. 95%Molecular weight:412.55 g/molMethacycline Hydrochloride
CAS:Formula:C22H23ClN2O8Purity:98%Color and Shape:SolidMolecular weight:478.8796Ref: IN-DA007839
1g43.00€5g71.00€10g109.00€25g169.00€100g361.00€35kg11,470.00€500gTo inquire250mg29.00€N-Nitrosopyrrolidine (NPYR) Solution (1 mL (1-Nitrosopyrrolidine))
CAS:Diagnostic or lab reagents on a backing, prepared diagnostic or lab reagents whether or not on a backing, whether or not in the form of kits, nesoiFormula:C4H8N2OColor and Shape:Colorless LiquidMolecular weight:100.06366Entecavir EP Impurity B HCl
CAS:Formula:C12H15N5O3·HClColor and Shape:White To Off-White SolidMolecular weight:277.29 36.46Flurbiprofen Impurity 3
CAS:Formula:C15H14O3Color and Shape:White To Off-White SolidMolecular weight:242.27Anastrozole Impurity 7
CAS:Formula:C17H21N5OColor and Shape:White To Off-White SolidMolecular weight:311.39Pinoxaden
CAS:Pinoxaden is a protein kinase inhibitor that has shown promising results in the treatment of cancer. It specifically targets cyclin-dependent kinases, which are key regulators of cell division and proliferation. By inhibiting these kinases, Pinoxaden induces apoptosis (programmed cell death) in cancer cells, thereby preventing tumor growth and metastasis. This drug is an analog of a Chinese herbal medicine and has been shown to have potent anticancer activity both in vitro and in vivo. In addition, Pinoxaden has low toxicity and is excreted primarily through urine, making it a promising candidate for further development as an anticancer agent.Formula:C23H32N2O4Purity:Min. 95%Molecular weight:400.5 g/molVigabatrin EP Impurity C (Mixture of Diastereomers)
CAS:Formula:C7H10N2O2Color and Shape:Off-White SolidMolecular weight:154.175-Thiazolecarboxylic acid, 2-(3-formyl-4-hydroxyphenyl)-4-methyl-, ethyl ester
CAS:Formula:C14H13NO4SPurity:98%Color and Shape:SolidMolecular weight:291.3223(R)-3-(3-Fluoro-4-(4-morpholinyl)phenyl)-5-(hydroxymethyl)oxazolidin-2-one
CAS:(R)-3-(3-Fluoro-4-(4-morpholinyl)phenyl)-5-(hydroxymethyl)oxazolidin-2-one (FPH) is a synthetic drug product that is used as an impurity standard in the synthesis of pharmaceuticals. It is also used in metabolism studies and research and development. FPH has been shown to be a metabolite of the drug product, 3-(3-fluoro-4-(4-morpholinyl)phenyl)-5-(hydroxymethyl)oxazolidin-2-one, which is classified as an API impurity for pharmacopoeia purposes. FPH has a molecular formula of C11H14FO2N2O and a molecular weight of 222.26 g/mol. The CAS number for FPH is 168828-82-8.Formula:C14H17FN2O4Purity:Min. 98 Area-%Color and Shape:PowderMolecular weight:296.29 g/molN-[4-(2,3-Dichlorophenyl)-3,4-dihydro-1(2H)-naphthalenylidene]methanamine
CAS:N-[4-(2,3-Dichlorophenyl)-3,4-dihydro-1(2H)-naphthalenylidene]methanamine is an impurity standard. It is a synthetic chemical that has been used in the development of drugs, such as metoclopramide and sertraline. N-[4-(2,3-Dichlorophenyl)-3,4-dihydro-1(2H)-naphthalenylidene]methanamine is also found as a metabolite of these drugs. It can be used to determine the purity of a drug product by HPLC and to study metabolic pathways in humans.Formula:C17H15Cl2NPurity:Min. 95%Molecular weight:304.20 g/molPenicillin G potassium salt
CAS:Formula:C16H17KN2O4SPurity:≤ 1.0%Color and Shape:White to off-white crystalline powderMolecular weight:372.48Tranexamic Acid EP Impurity C HCl
CAS:Formula:C8H13NO2·HClColor and Shape:White To Off-White SolidMolecular weight:155.20 36.462-(4-Boronophenyl)-2-methylpropanoic acid
CAS:Formula:C10H13BO4Purity:95%Color and Shape:SolidMolecular weight:208.01882000000003Salbutamol EP Impurity F
CAS:Formula:C26H40N2O5Color and Shape:White To Off-White SolidMolecular weight:460.62Sitafloxacin monohydrate
CAS:Formula:C19H20ClF2N3O4Purity:(HPLC) ≥ 98.0%Color and Shape:White to beige powderMolecular weight:427.83Xylometazoline EP Impurity A (as Hydrochloride)
CAS:Controlled ProductFormula:C16H26N2O·ClHColor and Shape:NeatMolecular weight:298.85Cefalexin (Cephalexin) EP Impurity A (Ampicillin EP Impurity L)
CAS:Formula:C8H9NO2Color and Shape:White To Off-White SolidMolecular weight:151.17Varenicline Impurity 20 DiHCl
CAS:Formula:C11H14N2·2HClColor and Shape:Off-White SolidMolecular weight:174.25 2*36.46N-(4-CHLOROPHENYL)-N'-(ISOPROPYL)-IMIDODICARBONIMIDIC DIAMIDE
CAS:Formula:C11H16ClN5Purity:97%Color and Shape:SolidMolecular weight:253.7312Bisoprolol EP Impurity U
CAS:Formula:C14H19NO4Color and Shape:White To Off-White SolidMolecular weight:265.31(Z)-S-2-Benzothiazolyl-2-amino-α-(methoxyimino)-4-thiazolethiolacetate
CAS:Formula:C13H10N4O2S3Purity:90%Color and Shape:SolidMolecular weight:350.4391Norethisterone EP Impurity H (6-β-Hydroxy Norethisterone)
CAS:Formula:C20H26O3Molecular weight:314.45(1aS,4S,6aR,7aS)-6-Amino-1,1a,4,6a,7,7a-hexahydro-4-(3-hydroxytricyclo[3.3.1.13,7]dec-1-yl)-3H-Cyclopropa[4,5]pyrrolo[1,2-a]pyrazin- 3-one
CAS:(1aS,4S,6aR,7aS)-6-Amino-1,1a,4,6a,7,7a-hexahydro-4-(3-hydroxytricyclo[3.3.1.13,7]dec-1-yl)-3H-Cyclopropa[4,5]pyrrolo[1,2- a]pyrazin-3-one is an HPLC standard that is used in the development of drugs and pharmaceuticals. It is an impurity found in API's and is also known as a metabolite. This compound has been studied for its metabolism properties and has been shown to be synthesized from 2-[(2E)-butanal].Formula:C18H25N3O2Purity:Min. 95%Molecular weight:315.41 g/molCefoperazone Impurity 19
CAS:Formula:C15H17N3O6Color and Shape:White To Off-White SolidMolecular weight:335.32Benzene, 1,2-dichloro-3-methoxy-
CAS:Formula:C7H6Cl2OPurity:98%Color and Shape:SolidMolecular weight:177.0279Diphenoxylate Hydrochloride
CAS:Controlled ProductApplications Antiperistaltic; antidiarrheal. Controlled substance (opiate). Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package References Karim, et al.: J. Pharmacol. Exp. Ther., 177, 546 (1971), Hung, D.D., et al.: Anal. Profiles Drug Subs., 7, 149 (1978),Formula:C30H32N2O2·ClHColor and Shape:WhiteMolecular weight:489.05Floxuridine
CAS:Formula:C9H11FN2O5Purity:(HPLC) ≥ 98.0%Color and Shape:White to off-white powderMolecular weight:246.20Fampridine Impurity 3
CAS:Formula:C9H12N2O2Color and Shape:White To Off-White SolidMolecular weight:180.21Ref: IN-DA00FC2I
1gTo inquire5gTo inquire1mg36.00€5mg70.00€10mg100.00€25mg146.00€50mg163.00€100mg278.00€250mg558.00€500mg590.00€6-FLUORO-[1,4]DIAZEPANE-1-CARBOXYLIC ACID TERT-BUTYL ESTER
CAS:Purity:95.0%Molecular weight:218.27200317382812Plerixafor Impurity 27 OctaHCl
Formula:C25H50N8·8HClColor and Shape:White To Off-White SolidMolecular weight:462.73 8*36.46(S)-(E,Z)-1-(4-Chlorobenzylideneamino)-3-chloropropan-2-ol
CAS:Please enquire for more information about (S)-(E,Z)-1-(4-Chlorobenzylideneamino)-3-chloropropan-2-ol including the price, delivery time and more detailed product information at the technical inquiry form on this pageFormula:C10H11Cl2NOPurity:Min. 95%Molecular weight:232.1 g/mol9-Oxo-10(9H)-acridineacetic acid
CAS:Formula:C15H11NO3Purity:%Color and Shape:SolidMolecular weight:253.25274Folic Acid
CAS:Controlled ProductStability Hygroscopic Applications A vitamin needed to synthesize DNA, conduct DNA repair and methylate DNA, it also acts as a cofactor in biological reactions involving folate. References Xu, L., et al.: Mol. Pharm., 7, 1311 (2010), Everette, J., et al.: J. Agric. Food Chem., 58, 8139 (2010), Alshatwi, A., et al.: Food, Chem., Toxicol., 48, 1881 (2010), McKay, D., et al.: Nut. J., 9 (2010),Formula:C19H19N7O6Color and Shape:Dark YellowMolecular weight:441.404-Amino-5,6-dimethoxypyrimidine
CAS:4-Amino-5,6-dimethoxypyrimidine is a pyrimethamine derivative that has been used as an antimalarial agent. It is a high yield compound with a chromatographic profile that can be used to identify impurities of other compounds. 4-Amino-5,6-dimethoxypyrimidine is eluted at the same time as sulfadoxine and can be used to calculate the concentration of sulfadoxine in a mixture. It can also be used as a reagent for rp-hplc. The linearity of this compound was tested by calibrating it against pyrimethamine and quantifying it using UV/Vis spectroscopy over the range 0.05 to 1 mg/mL.Formula:C6H9N3O2Purity:Min. 95%Molecular weight:155.15 g/molQuetiapine EP Impurity V DiHCl
Formula:C21H25N3O2·2HClColor and Shape:Off-White SolidMolecular weight:351.45 2 36.46Urethane-d5
CAS:Controlled ProductApplications Isotope labelled Urethane (U82500), which is a naturally occurring contaminant in fermented foods, particularly wine, stone-fruit brandies, and bread. This substance is reasonably anticipated to be a human carcinogen (1) despite being an additive in some alcoholic beverages and foods (2). It binds covalently with DNA however due to its low unavoidable daily intake, it is considered of negligible concern (3).Drinking water contaminant candidate list 3 (CCL 3) compound as per United States Environmental Protection Agency (EPA). Environmental contaminants; Food contaminants. References 1. Mirvish, S. et al.: Adv. Cancer Res. 1968;11:1-42.2. Battaglia R. et al.: Food Addit Contam. 1990 Jul-Aug;7(4):477-96.3. Zimmerli B. et al.: Mutat Res. 1991 Mar-Apr;259(3-4):325-50.Formula:C32H5H2NO2Color and Shape:White To Light BrownMolecular weight:94.122,3,5-tri-O-benzyl-1,4-dideoxy-1,4-epithio-D-arabinitol
CAS:Formula:C26H28O3SPurity:97%Color and Shape:LiquidMolecular weight:420.5637methyl 5-fluoro-2-methoxybenzoate
CAS:Formula:C9H9FO3Purity:95%Color and Shape:LiquidMolecular weight:184.1644Lurasidone Impurity 33 (exo-2,3-Norbornanedicarboximide)
CAS:Formula:C9H11NO2Color and Shape:White To Off-White SolidMolecular weight:165.19Decarbazolyl desmethyl carvedilol
CAS:Please enquire for more information about Decarbazolyl desmethyl carvedilol including the price, delivery time and more detailed product information at the technical inquiry form on this pageFormula:C11H17NO4Purity:Min. 95%Molecular weight:227.26 g/mol(R)-Valiolamine voglibose dihydrochloride
CAS:Please enquire for more information about (R)-Valiolamine voglibose dihydrochloride including the price, delivery time and more detailed product information at the technical inquiry form on this pageFormula:C17H34N2O11Purity:Min. 95%Molecular weight:442.5 g/mol(E)-1-(3-(Trifluoromethyl)-5,6-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl)-4-(2,4,5-trifluorophenyl)but-2-en-1-one (Sitagliptin Impurity)
CAS:Formula:C16H12F6N4OPurity:98%Color and Shape:SolidMolecular weight:390.283099199999871-[4-(4-Amino-6,7-dimethoxy-2-quinazolinyl)-1-piperazinyl]-2-hydroxy-1-pentanone
CAS:1-[4-(4-Amino-6,7-dimethoxy-2-quinazolinyl)-1-piperazinyl]-2-hydroxy-1-pentanone (DMPP) is an analog of the antiarrhythmic drugs flecainide and propafenone. It has the same effects as these drugs, but with a longer duration of action. DMPP is a racemic mixture of two enantiomers, one of which is active against arrhythmias and the other inactive. The drug binds to the beta subunit of voltage gated potassium channels in cardiac muscle cells, preventing the flow of current through these channels. This results in prolongation of the action potential and suppression of arrhythmias. DMPP also inhibits cellulase activity and may be used as an agent for treatment of bacterial infections caused by methicillin resistant Staphylococcus aureus (MRSA).Formula:C19H27N5O4Purity:Min. 95%Molecular weight:389.45 g/molAlmotriptan EP Impurity D Malate (Almotriptan USP Related Compound B Malate)
CAS:Formula:C15H21N3O2S·C4H6O5Color and Shape:Off-White SolidMolecular weight:307.42 134.09Brivaracetam Impurity 6
CAS:Formula:C9H17BrO2Color and Shape:Pale Yellow LiquidMolecular weight:237.14Levofloxacin EP Impurity C (Levofloxacin N-Oxide)
CAS:Formula:C18H20FN3O5Color and Shape:Off-White SolidMolecular weight:377.37Fluocinolone Acetonide-21-aldehyde
CAS:Impurity Fluocinolone Acetonide EP Impurity D Stability Hygroscopic Applications Fluocinolone acetonide-21-aldehyde, is a derivative of Fluocinolone Acetonide (F455800), which is a Corticosteroid, used in dermatology to reduce skin inflammation and relieve itching. References Sammul, et al.: J. Assoc. Off. Agric. Chem., 47, 952 (1964), Emerson, M.V., et al.: BioDrugs, 21, 245 (2007),Formula:C24H28F2O6Color and Shape:White To Light YellowMolecular weight:450.472-Piperidinecarboxamide, N-(2,6-dimethylphenyl)-
CAS:Formula:C14H20N2OPurity:96%Color and Shape:SolidMolecular weight:232.3214Indomethacin Impurity 16
CAS:Formula:C10H11ClO4Color and Shape:White To Off-White SolidMolecular weight:230.64Sugammadex Impurity 65 (Mixture of Isomers)
Formula:C74H116O48S8Color and Shape:White To Off-White SolidMolecular weight:2030.17b-Alanine,N-[[2-[[[4-(aminoiminomethyl)phenyl]amino]methyl]-1-methyl-1H-benzimidazol-5-yl]carbonyl]-N-2-pyridinyl-, ethyl ester
CAS:Formula:C27H30ClN7O3Purity:98%Molecular weight:536.0252vincaleukoblastine,sulfate(1:1)
CAS:Formula:C46H60N4O13SPurity:97%Color and Shape:SolidMolecular weight:909.0526Rivaroxaban Impurity 69 DiHCl
Formula:C18H20ClN3O4S·2HClColor and Shape:White To Off-White SolidMolecular weight:409.89 2*36.46(2R,3S,4R,5R,6S)-5-Acetamido-2-(acetoxymethyl)-6-isopropoxytetrahydro-2H-pyran-3,4-diyl diacetate
CAS:Formula:C17H27NO9Purity:98%Color and Shape:SolidMolecular weight:389.39757999999995Lifitegrast Impurity 15
Formula:C19H17NO6SColor and Shape:White To Off-White SolidMolecular weight:387.41