Natural and semi-synthetic antibiotics
Natural and semisynthetic antibiotics are characterised by chemical structures with heterocyclic rings and active functional groups that inhibit the growth of microorganisms. Their structures allow them to interact with vital bacterial processes, making them useful treatments for bacterial infections. Semisynthetic antibiotics can be modified to enhance their spectrum of activity or resistance to degradation.
At CymitQuimica, we offer high-quality natural and semisynthetic antibiotics for research in microbiology and pharmaceutical development.
Products of "Natural and semi-synthetic antibiotics"
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Lovastatin EP Impurity C (Dehydro Lovastatin)
CAS:Formula:C24H34O4Color and Shape:White To Off-White SolidMolecular weight:386.53Penicillin F Potassium Salt
CAS:Formula:C14H19N2O4S·KColor and Shape:White To Off-White SolidMolecular weight:311.38 39.10Cefditoren Impurity 16
CAS:Formula:C33H36N6O8S3Color and Shape:Pale Yellow SolidMolecular weight:740.87Meropenem EP Impurity A Disodium Salt
CAS:Formula:C17H25N3O6S·2NaColor and Shape:Pale Yellow Sticky SolidMolecular weight:399.46 2*22.99Cefazedone Impurity 1
Formula:C13H8Cl2N4O3Color and Shape:White To Off-White SolidMolecular weight:339.14Piperacillin Sodium EP Impurity P
Formula:C31H34N6O8SColor and Shape:White To Off-White SolidMolecular weight:650.71Aztreonam USP Related Compound E ((E)-Aztreonam)
CAS:Formula:C13H17N5O8S2Color and Shape:White To Off-White SolidMolecular weight:435.43Ceftazidime Impurity 8 Trifluoroacetate
Formula:C9H12N4O4S·C2HF3O2Color and Shape:White To Off-White SolidMolecular weight:272.28 114.024-Methylpyridin-2-amine
CAS:Controlled ProductFormula:C6H8N2Color and Shape:NeatMolecular weight:108.14Clarithromycin N-Oxide
CAS:Formula:C38H69NO14Color and Shape:White To Off-White SolidMolecular weight:763.96Vancomycin CDP-1 (Vancomycin EP Impurity B and Vancomycin EP Impurity E)
CAS:Formula:C66H74Cl2N8O25Molecular weight:1450.25Clavulanic Acid Impurity 10 HCl
CAS:Formula:C4H11N·HClColor and Shape:White To Off-White SolidMolecular weight:73.14 36.46Ref: 4Z-P-288001
Discontinued productCefprozil-d4 (Mixture of Z and E Isomers)
CAS:Formula:C18H15D4N3O5SColor and Shape:Off-White SolidMolecular weight:393.45Phenoxymethylpenicillin Potassium
CAS:Controlled ProductFormula:C16H17N2O5S·KColor and Shape:NeatMolecular weight:388.48Ceftazidime EP Impurity A
CAS:Formula:C22H22N6O7S2Color and Shape:White To Off-White SolidMolecular weight:546.57Colistin
CAS:Colistin: polypeptide antibiotic for Gram-negative bacteria, including drug-resistant strains, but may cause nephrotoxicity.Formula:C53H100N16O13(forE1)Color and Shape:SolidMolecular weight:1169.5Tigecycline impurity (ring-open)
CAS:Formula:C29H37N5O10Color and Shape:White To Off-White SolidMolecular weight:615.64Tacrolimus Lactone Isomer (Iso-FK-506)
CAS:Formula:C44H69NO12Color and Shape:White To Off-White SolidMolecular weight:804.03Retapamulin Impurity 14
Formula:C30H47NO5SColor and Shape:White To Off-White SolidMolecular weight:533.78N-Desmethyl N-Nitroso Dalbavancin (Mixture of B0+A0+A1+B1+B2)
Formula:C87H97Cl2N11O29C86H95Cl2N11O29Molecular weight:1831.68(B0) 1817.65(A0)+Amoxicillin Impurity 1
CAS:Formula:C8H10N2O2Color and Shape:White To Off-White SolidMolecular weight:166.18Tobramycin
CAS:Tobramycin (NSC-180514) is an aminoglycoside, broad-spectrum antibiotic produced by Streptomyces tenebrarius.Formula:C18H37N5O9Purity:99.21% - 99.87%Color and Shape:White SolidMolecular weight:467.51Tulathromycin A
CAS:Tulathromycin A (CP 472295) is a macrolide antibiotic.Formula:C41H79N3O12Purity:99.91%Color and Shape:SolidMolecular weight:806.08Amikacin disulfate
CAS:Amikacin disulfate (BAY-416651 sulfate) is a semi-synthetic aminoglycoside antibiotic derived from kanamycin A.Formula:C22H43N5O13·2H2O4SPurity:98.67% - 98.90%Color and Shape:White Crystalline Powder From Methanol-Isopropanol SolidMolecular weight:781.76Ampicillin EP Impurity D Disodium Salt (Mixture of Diastereomers)
CAS:Formula:C16H19N3O5S·2NaColor and Shape:Off-White SolidMolecular weight:365.41 2*22.99Lovastatin Impurity 2 (Mixture of Diastereomers)
Formula:C24H34O6Color and Shape:White To Off-White SolidMolecular weight:418.53Anhydroclarithromycin
CAS:Lactones, nesoiFormula:C38H67NO12Color and Shape:White Off-White PowderMolecular weight:729.46633Cefquinome
CAS:Cefquinome is a cephem antibiotic that inhibits Enterobacteriaceae (family [1]).Formula:C23H24N6O5S2Purity:98%Color and Shape:SolidMolecular weight:528.6Cefazolin Related Compound D (Cefazolin open-ring lactone)
CAS:Formula:C11H12N6O5SMolecular weight:340.31Tigecycline Metabolite M4 (Epimer of N-Acetyl-9-Aminominocycline)
Formula:C25H30N4O8Molecular weight:514.54Cefminox Sodium Impurity 6 HCl
Formula:C8H14N2O5S·HClColor and Shape:Pale Yellow SolidMolecular weight:250.28 36.46Phenoxymethylpenicillin EP Impurity B
CAS:Controlled ProductFormula:C8H8O3Color and Shape:NeatMolecular weight:152.1513-O-Desmethyl tacrolimus
CAS:Tacrolimus is a macrolide immunosuppressant that is used to prevent organ rejection in transplant patients. It binds to the cytosolic protein, FKBP-12, which prevents calcineurin from dephosphorylating and activating nuclear factor of activated T cells (NFAT). Tacrolimus inhibits the production of IL-2 and other cytokines by T cells, suppressing proliferation. Tacrolimus has been shown to be bioequivalent when administered orally or intravenously. Bioavailability may be increased when taken with food.Formula:C43H67NO12Purity:90%MinColor and Shape:PowderMolecular weight:789.99 g/molCiprofloxacin Impurity 2 HCl
CAS:Formula:C15H16ClN3O3·HClColor and Shape:Yellow SolidMolecular weight:321.77 36.46Rifapentine Impurity 1 (3-Formyl-Desacetyl Rifamycin)
CAS:Formula:C36H45NO12Color and Shape:Red SolidMolecular weight:683.75Decarboxy Moxifloxacin HCl
CAS:Formula:C20H24FN3O2·HClColor and Shape:Yellow SolidMolecular weight:357.43 36.46Piperacillin EP Impurity S Sodium Salt (Piperacillin Penicillamide Sodium Salt)
Formula:C31H36N7O9S2·NaMolecular weight:714.80 22.99N-[(2E)-6,6-Dimethyl-2-hepten-4-yn-1-yl]-N,4-dimethyl-1-naphthalenemethanamine Hydrochloride
CAS:Controlled ProductImpurity Terbinafine EP Impurity D; Terbinafine USP Related Compound D; Terbinafine BP Impurity D Applications N-[(2E)-6,6-dimethyl-2-hepten-4-yn-1-yl]-N,4-dimethyl-1-naphthalenemethanamine (Terbinafine EP Impurity D; Terbinafine USP Related Compound D; Terbinafine BP Impurity D) is an impurity of Terbinafine (T107500), an orally active, antimycotic allylamine and a specific inhibitor of squalene epoxidase. References Petranyi, G., et al.: Science, 224, 1239 (1984); Ryder, N.S., et al.: Antimicrob. Agents Chemother., 27, 252 (1985); Evans, E.G.V., et al.: Br. Med. J., 318, 1031 (1999);Formula:C22H27N·ClHColor and Shape:NeatMolecular weight:341.917N-(((5R)-3-(3-Fluoro-4- (4-morpholinyl)phenyl)-2-oxo- 5-oxazolidinyl)methyl) acetamide
CAS:Please enquire for more information about N-(((5R)-3-(3-Fluoro-4- (4-morpholinyl)phenyl)-2-oxo- 5-oxazolidinyl)methyl) acetamide including the price, delivery time and more detailed product information at the technical inquiry form on this pageFormula:C16H20FN3O4Purity:Min. 95%Color and Shape:PowderMolecular weight:337.35 g/molCefixime trihydrate
CAS:Cefixime trihydrate, a third-gen cephalosporin antibiotic, treats bacterial infections.Formula:C16H17N5O8S2Color and Shape:SolidMolecular weight:471.46N-Desmethyl N,N-Dinitroso Dalbavancin (Mixture of B0+A0+A1+B1+B2)
Formula:C87H96Cl2N12O30C86H94Cl2N12O30Molecular weight:1860.68(B0) 1846.65(A0)+Oxytetracycline Dihydrate
CAS:Oxytetracycline Dihydrate (Terramycin Dihydrate) is a prescription antibiotic, interfering with the ability of bacteria to produce essential proteins.Formula:C22H24N2O9·2H2OPurity:99.80%Color and Shape:CrystallineMolecular weight:496.46Cefdinir impurity E
CAS:Cefdinir impurity E is a research and development, impurity standard, custom synthesis, drug product, synthetic, high purity, pharmacopoeia, drug development and analytical standard. CAS No. 946573-41-7 is the metabolite of cefdinir. It is used to study metabolism of cefdinir in vitro and in vivo. HPLC standards are available for this compound.Purity:Min. 95%Aztreonam Dimer Impurity Sodium Salt
Formula:C26H35N10O14S3·NaColor and Shape:White To Off-White SolidMolecular weight:807.80 22.99Pyrrolic acid Derivative (4-(2-hydroxyethyl)-1H-pyrrole-3-carboxylic acid)
CAS:Heterocyclic compounds (excluding aromatic or modified aromatic) withnitrogen hetero-atom(s) only nesoiFormula:C7H9NO3Color and Shape:Off-White SolidMolecular weight:155.05824Cefazolin Impurity 20 Trifluoroacetate Salt
Formula:C20H22N4O9S2·C2HF3O2Molecular weight:526.54 114.02Lincomycin EP Impurity E
CAS:Formula:C9H17NO2Color and Shape:White To Off-White SolidMolecular weight:171.24Terbinafine N-oxide
Controlled ProductStability Hygroscopic Applications Terbinafine N-oxide is an impurity of Terbinafine (T107500), an antifungal that inhibits squalene epoxidase, a key enzyme in fungal ergosterol biosynthesis. References Petranyi, G., et al.: Science, 224, 1239 (1984); Ryder, N.S., et al.: Antimicrob. Agents Chemother., 27, 252 (1985); Evans, E.G.V., et al.: Br. Med. J., 318, 1031 (1999)Formula:C21H25NOColor and Shape:NeatMolecular weight:307.43Rifaximin EP Impurity F (Rifamycin O)
CAS:Formula:C39H47NO14Color and Shape:Yellow SolidMolecular weight:753.80rac-Amoxicillin EP Impurity H
CAS:Formula:C13H17NO4Color and Shape:White To Off-White SolidMolecular weight:251.28Azithromycin hydrate
CAS:Azithromycin hydrate (CP-62993 dihydrate) is a semi-synthetic macrolide antibiotic structurally related to erythromycin.Formula:C38H72N2O12·2H2OPurity:99.83% - 99.92%Color and Shape:White Or Almost White Crystalline PowderMolecular weight:785.03Defluoro rac-Linezolid
CAS:Formula:C16H21N3O4Color and Shape:White To Off-White SolidMolecular weight:319.36Vancomycin EP Impurity B ([ß Asp3]vancomycin B ; Vancomycin B Diacid)
Formula:C66H74Cl2N8O25Molecular weight:1450.27Linezolid Impurity 35 DiHCl
Formula:C11H16FN3O3·2HClColor and Shape:Off-White SolidMolecular weight:257.27 2 36.46Tulathromycin A
CAS:Formula:C41H79N3O12Color and Shape:White To Off-White SolidMolecular weight:806.10Cefoxitin Sodium Salt
CAS:Formula:C16H16N3O7S2·NaColor and Shape:White To Off-White SolidMolecular weight:426.44 22.99Acetylisovaleryltylosin Tartrate (Tylvalosin Tartrate)
CAS:Formula:C53H87NO19·C4H6O6Molecular weight:1042.27 150.09Piperacillin Impurity 4
Formula:C41H48N8O10S2Color and Shape:White To Off-White SolidMolecular weight:877.00Streptomycin
CAS:Streptomycin (Agrept) is an aminoglycoside antibiotic isolated from Streptomyces species, a blocker of stretch-activated in neurons and cardiomyocytes.Formula:C21H39N7O12Purity:99.99%Color and Shape:SolidMolecular weight:581.57Vancomycin
CAS:Vancomycin is a glycopeptide antibiotic that exerts its antimicrobial activity by altering the permeability of cell membranes and selectively inhibitingFormula:C66H75Cl2N9O24Purity:99.24%Color and Shape:Almost White PowderMolecular weight:1449.25Rifamycin
CAS:Rifamycin: Natural antibiotic; blocks prokaryotic RNA synthesis by halting RNA-polymerase.Formula:C37H47NO12Purity:98%Color and Shape:SolidMolecular weight:697.77
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