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.
Found 6320 products of "Natural and semi-synthetic antibiotics"
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Clindamycin-13C-d3 (Clindamycin Phosphate EP Impurity E-13C-d3)
CAS:Formula:C1713CH30D3ClN2O5SColor and Shape:White To Off-White SolidMolecular weight:428.99Sulbactam EP Impurity C
CAS:Formula:C8H10BrNO5SColor and Shape:White To Off-White SolidMolecular weight:312.13Clindamycin Phosphate EP Impurity J HCl (Mixture of Z and E Isomers)
CAS:Formula:C18H32ClN2O8PS·HClMolecular weight:502.94 36.46Ampicillin Sodium Salt
CAS:Formula:C16H19N3O4S·NaColor and Shape:White To Off-White SolidMolecular weight:348.40 22.99Linezolid Impurity 28
CAS:Formula:C10H13FN2OColor and Shape:Purplish Red SolidMolecular weight:196.23Cefminox Sodium Impurity 6 HCl
Formula:C8H14N2O5S·HClColor and Shape:Pale Yellow SolidMolecular weight:250.28 36.46Cefbuperazone-δ-3 Isomer
Formula:C22H29N9O9S2Color and Shape:White To Off-White SolidMolecular weight:627.66Faropenem
CAS:<p>Faropenem: an oral beta-lactam antibiotic resistant to beta-lactamases, effective against various bacteria, used for respiratory infections.</p>Formula:C12H15NO5SColor and Shape:Light Yellow PowderMolecular weight:285.31Cefazolin-13C2-15N
CAS:Formula:C1213C2H14N715NO4S3Color and Shape:White To Off-White SolidMolecular weight:457.48Lincomycin EP Impurity B (Mixture of Diastereomers)
Formula:C18H32N2O6SColor and Shape:Pale Yellow SolidMolecular weight:404.52Aztreonam Impurity 1 Disodium Salt (Mixture of Diastereomers)
Formula:C15H21N5O9S2·2NaColor and Shape:White To Off-White SolidMolecular weight:479.49 2*22.99Clarithromycin EP Impurity O
CAS:Formula:C39H72N2O13Color and Shape:White To Off-White SolidMolecular weight:777.01Faropenem Related Compound 2
CAS:Formula:C21H33NO7SSiColor and Shape:White To Off-White SolidMolecular weight:471.65Bacitracin EP Impurity G Ditrifluoroacetate
CAS:Formula:C65H96N16O17S·2C2HF3O2Molecular weight:1405.64 2*114.02Tebipenem Pivoxil
CAS:Formula:C22H31N3O6S2Color and Shape:White To Off-White SolidMolecular weight:497.63Dicloxacillin Degradation Impurity (DCMICAA)
CAS:Formula:C13H10Cl2N2O4Color and Shape:White To Off-White SolidMolecular weight:329.13Spectinomycin EP Impurity C DiHCl (Spectinomycin CP Impurity C DiHCl)
CAS:Formula:C14H26N2O7·2HClMolecular weight:334.37 2*36.46Cefdinir Impurity 6 (Thiazolylacetylglycine Oxime Acetal)
CAS:Formula:C7H10N4O4S·C7H8N4O3SColor and Shape:Pale Yellow SolidMolecular weight:246.24 228.23Clindamycin HCl (Clindamycin Phosphate EP Impurity E HCl)
CAS:Formula:C18H33ClN2O5S·HClColor and Shape:White To Off-White SolidMolecular weight:424.99 36.46Cefazedone Impurity 3
Formula:C20H27Cl2N3O3Color and Shape:White To Off-White SolidMolecular weight:428.35Ciprofloxacin EP Impurity C HCl
CAS:Formula:C15H16FN3O3·HClColor and Shape:White To Off-White SolidMolecular weight:305.31 36.46Bacitracin A
CAS:Formula:C66H103N17O16SColor and Shape:White To Off-White SolidMolecular weight:1422.71Enoxacin-d8 HCl
CAS:Formula:C15H9D8FN4O3·HClColor and Shape:White To Off-White SolidMolecular weight:328.37 36.46Cefoxitin sodium
CAS:<p>Cefoxitin sodium (Betacef) is a semisynthetic cephamycin antibiotic resistant to beta-lactamase.</p>Formula:C16H16N3NaO7S2Purity:99.19%Color and Shape:White To Almost White PowderMolecular weight:449.43Lomefloxacin Impurity 6 HCl
CAS:Formula:C16H17F2N3O3·HClColor and Shape:Pale Yellow SolidMolecular weight:337.33 36.46Cefetamet Hydrochloride
CAS:<p>Cefetamet is a potent antibiotic to treat respiratory and urinary tract infections.</p>Formula:C14H16ClN5O5S2Purity:98%Color and Shape:SolidMolecular weight:433.89Lincomycin Sulfoxide (Mixture of Diastereomers)
CAS:Formula:C18H34N2O7SColor and Shape:White To Off-White SolidMolecular weight:422.54Moxifloxacin Ethyl Ester
CAS:Formula:C23H28FN3O4Color and Shape:White To Off-White SolidMolecular weight:429.49N-Nitroso Moxifloxacin EP Impurity G (N-Nitroso ent-Moxifloxacin)
Formula:C21H23FN4O5Molecular weight:430.44Pretomanid (PA-824)
CAS:Formula:C14H12F3N3O5Color and Shape:White To Off-White SolidMolecular weight:359.26Penicillamine Impurity 1
CAS:Formula:C10H20N2O4S3Color and Shape:White To Off-White SolidMolecular weight:328.46Moxifloxacin Impurity 3 HCl
Formula:C21H24FN3O4·HClColor and Shape:Pale Yellow SolidMolecular weight:401.44 36.46Azithromycin EP Impurity E
CAS:Formula:C36H68N2O12Color and Shape:White To Off-White SolidMolecular weight:720.948-Demethoxy-8-Fuoro Gatifloxacin
CAS:Formula:C18H19F2N3O3Color and Shape:White To Off-White SolidMolecular weight:363.373-Hydroxy Azithromycinoic Acid
CAS:Formula:C30H60N2O10Color and Shape:White To Off-White SolidMolecular weight:608.81Bacitracin EP Impurity H Ditrifluoroacetate
CAS:Formula:C65H96N16O17S·2C2HF3O2Molecular weight:1405.64 2*114.02Cefamandole EP Impurity E
CAS:Formula:C19H18N2O8SColor and Shape:White To Off-White SolidMolecular weight:434.42Bacitracin A-d7 Tritrifluoroacetate
CAS:Formula:C66H96D7N17O16S·3C2HF3O2Molecular weight:1429.76 3*114.02Amoxicillin Impurity 16 Disodium Salt (Mixture of Diastereomers)
Formula:C24H29N5O8S2·2NaMolecular weight:579.64 2*22.99Moxifloxacin EP Impurity A HCl (Moxifloxacin USP Related Compound A HCl)
CAS:Formula:C20H21F2N3O3·HClColor and Shape:Pale Yellow SolidMolecular weight:389.40 36.46Posaconazole Impurity 78
CAS:Formula:C10H8F2O3Color and Shape:White To Off-White SolidMolecular weight:214.17Ciprofloxacin EP Impurity F HCl
CAS:Formula:C17H19N3O4·HClColor and Shape:Pale Yellow SolidMolecular weight:329.36 36.46Linezolid Impurity 8 HCl
CAS:Formula:C13H18ClFN2O2·HClColor and Shape:White To Off-White SolidMolecular weight:288.75 36.46Besifloxacin Impurity A HCl
CAS:Formula:C19H21ClFN3O3·HClColor and Shape:Yellow SolidMolecular weight:393.85 36.46Piperacillin Impurity 2
Formula:C24H31N5O8SColor and Shape:White To Off-White SolidMolecular weight:549.60Rifapentine Impurity 2 (3-Formyl Rifamycin S)
CAS:Formula:C38H45NO13Color and Shape:Orange SolidMolecular weight:723.77Polymyxin B1-d7 Pentatrifluoroacetate
Formula:C56H91D7N16O13·5C2HF3O2Molecular weight:1210.54 5*114.02Omacetaxine Mepesuccinate (Homoharringtonine)
CAS:Formula:C29H39NO9Color and Shape:White To Off-White SolidMolecular weight:545.63Vancomycin-13C-d3 Ditrifluoroacetate
CAS:Formula:C6513CH72D3Cl2N9O24·2C2HF3O2Molecular weight:1453.28 2*114.02Terbinafine EP Impurity A HCl (Terbinafine USP Related Compound A)
CAS:Formula:C12H13N·HClColor and Shape:White To Off-White SolidMolecular weight:171.24 36.46Sisomicin (Netilmicin EP Impurity A)
CAS:Formula:C19H37N5O7Color and Shape:White To Off-White SolidMolecular weight:447.53N-Nitroso-N-Desmethyl Tetracycline (N-Nitroso-N-Desmethyl Oxytetracycline EP Impurity B)
Formula:C21H21N3O9Molecular weight:459.41Cefixime EP Impurity A Disodium Salt (Mixture of Diastereomers)
CAS:Formula:C16H15N5O8S2·2NaMolecular weight:469.45 2*22.99Decarboxy Moxifloxacin HCl
CAS:Formula:C20H24FN3O2·HClColor and Shape:Yellow SolidMolecular weight:357.43 36.46Ozenoxacin Impurity 8
Formula:C16H17Cl2NO3Color and Shape:White To Off-White SolidMolecular weight:342.22Amikacin Impurity 2 TetraHCl (1,3''-Di-HABA Kanamycin A TetraHCl)
CAS:Formula:C26H50N6O15·4HClColor and Shape:White To Off-White SolidMolecular weight:686.71 4*36.46Tobramycin Impurity 5
Formula:C23H36N2O7Color and Shape:White To Off-White SolidMolecular weight:452.55Cefaclor-d5
CAS:Formula:C15H9D5ClN3O4SColor and Shape:White To Off-White SolidMolecular weight:372.83Florfenicol
CAS:Formula:C12H14Cl2FNO4SColor and Shape:White To Off-White SolidMolecular weight:358.22Lomefloxacin Impurity 2 HCl
Formula:C17H20FN3O4·HClColor and Shape:White To Off-White SolidMolecular weight:349.36 36.46Acetylated Penicilloic Acid Disodium Salt
Formula:C21H19Cl2N3O7S·2NaColor and Shape:White To Off-White SolidMolecular weight:528.36 2 22.99Rapamycin-d3 (Sirolimus-d3)
CAS:Formula:C51H76D3NO13Color and Shape:White To Off-White SolidMolecular weight:917.21Desbutyl Lumefantrine
CAS:Formula:C26H24Cl3NOColor and Shape:Pale Yellow SolidMolecular weight:472.85Clindamycin Impurity 30
CAS:Formula:C18H35N2O9PSColor and Shape:White To Off-White SolidMolecular weight:486.52Tiamulin EP Impurity J
CAS:Formula:C22H34O4Color and Shape:White To Off-White SolidMolecular weight:362.51Desbutyl Lumefantrine-d9 (Mixture of Z and E Isomers)
CAS:Formula:C26H15D9Cl3NOMolecular weight:481.89Faropenem Sodium Salt
CAS:Formula:C12H14NO5S·NaColor and Shape:White To Off-White SolidMolecular weight:284.31 22.99Difloxacin HCl
CAS:Formula:C21H19F2N3O3·HClColor and Shape:White To Off-White SolidMolecular weight:399.40 36.46Faropenem Impurity 17 Sodium Salt
CAS:Formula:C12H14NO5S·NaColor and Shape:Yellow SolidMolecular weight:284.31 22.99Cefoperazone Impurity 2
CAS:Formula:C15H17N3O6Color and Shape:White To Off-White SolidMolecular weight:335.32Defluoro Linezolid
CAS:Formula:C16H21N3O4Color and Shape:White To Off-White SolidMolecular weight:319.36Oxytetracycline EP Impurity A
CAS:Formula:C22H24N2O9Color and Shape:Grey SolidMolecular weight:460.44Amikacin EP Impurity D
CAS:Formula:C18H36N4O11Color and Shape:White To Off-White SolidMolecular weight:484.50Enduracidin B Tritrifluoroacetate
CAS:Formula:C108H140Cl2N26O31·3C2HF3O2Color and Shape:Off-White SolidMolecular weight:2369.38 3*114.02Desbutyl Lumefantrine HCl
CAS:Formula:C26H24Cl3NO·HClColor and Shape:Yellow SolidMolecular weight:472.83 36.46Thiamphenicol Amine HCl
CAS:Formula:C10H15NO4S·HClColor and Shape:White To Off-White SolidMolecular weight:245.30 36.46Tetracycline EP Impurity D (Chlortetracycline EP Impurity I, Lymecycline EP Impurity D, 4-Epianhydrotetracycline)
CAS:Formula:C22H22N2O7Molecular weight:426.43Azithromycin EP Impurity F (Azithromycin USP Related Compound F)
CAS:Formula:C38H70N2O13Color and Shape:White To Off-White SolidMolecular weight:762.98Moxifloxacin Impurity 17
CAS:Formula:C15H12F3NO3Color and Shape:White To Off-White SolidMolecular weight:311.26Ceftazidime Impurity 1
CAS:Formula:C13H19N3O5SColor and Shape:White To Off-White SolidMolecular weight:329.37Tazobactam Acid Impurity 13
CAS:Formula:C23H22N4O5SColor and Shape:White To Off-White SolidMolecular weight:466.51N-Desmethyl Dirithromycin
CAS:Formula:C41H76N2O14Color and Shape:White To Off-White SolidMolecular weight:821.06Polymyxin B2 Pentatrifluoroacetate
CAS:Formula:C55H96N16O13·5C2HF3O2Color and Shape:White To Off-White SolidMolecular weight:1189.47 5*114.02Posaconazole Impurity 39
CAS:Formula:C37H40F2N8O5Color and Shape:White To Off-White SolidMolecular weight:714.77Tedizolid Impurity 53
Formula:C19H20FN6O6PColor and Shape:White To Off-White SolidMolecular weight:478.38Emamectin-d3 (Mixture of B1a and B1b)
CAS:Formula:C49H72D3NO13·C48H70D3NO13Color and Shape:White To Off-White SolidMolecular weight:889.15(B1a) 875.12(component B1b)Bacitracin B3 Tritrifluoroacetate
CAS:Formula:C65H101N17O16S·3C2HF3O2Molecular weight:1408.69 3*114.02Flucloxacillin Impurity 1 Disodium Salt
Formula:C21H19ClFN3O7S·2NaColor and Shape:White To Off-White SolidMolecular weight:511.92 2*22.99Enoxacin HCl
CAS:Formula:C15H17FN4O3·HClColor and Shape:White To Off-White SolidMolecular weight:320.32 36.46Posaconazole Impurity 11 (POS-B)
Formula:C60H69F2N13O7Color and Shape:Off-White SolidMolecular weight:1122.29Nafcillin-d5 Sodium Salt
CAS:Formula:C21H16D5N2O5S·NaColor and Shape:White To Off-White SolidMolecular weight:418.50 22.99Cefazedone Impurity 14
Formula:C18H15Cl2N5O5S3Color and Shape:Pale Yellow SolidMolecular weight:548.43Amikacin EP Impurity C
CAS:Formula:C22H43N5O13Color and Shape:White To Off-White SolidMolecular weight:585.61Oxytetracycline EP Impurity F HCl (Anhydro-Oxytetracycline HCl, Dehydrotetracycline HCl)
CAS:Formula:C22H22N2O8·HClMolecular weight:442.43 36.46Rifabutin EP Impurity B (3-Amino Rifamycin S)
CAS:Formula:C37H46N2O12Color and Shape:Brown SolidMolecular weight:710.78Erythromycin A 9-Oxime (Z-Isomer)
CAS:Formula:C37H68N2O13Color and Shape:White To Off-White SolidMolecular weight:748.95Moxifloxacin Impurity 16
CAS:Formula:C16H16FNO5Color and Shape:White To Off-White SolidMolecular weight:321.30Aztreonam Dimer Impurity Sodium Salt
Formula:C26H35N10O14S3·NaColor and Shape:White To Off-White SolidMolecular weight:807.80 22.99Carbenicillin Disodium Salt (Mixture of Diastereomers)
CAS:Formula:C17H16N2O6S·2NaMolecular weight:376.39 2*22.99Vancomycin CDP-1 Ditrifluoroacetate (Vancomycin EP Impurity B Ditrifluoroacetate and Vancomycin EP Impurity E Ditrifluoroacetate)
CAS:Formula:C66H74Cl2N8O25·2C2HF3O2Molecular weight:1450.25 2*114.02Erythromycin EP Impurity D (Anhydroerythromycin A)
CAS:Formula:C37H65NO12Color and Shape:White To Off-White SolidMolecular weight:715.92Lovastatin EP Impurity B-d3 Sodium Salt (Lovastatin Hydroxy Acid-d3 Sodium Salt)
CAS:Formula:C24H34O3O6·NaColor and Shape:White To Off-White SolidMolecular weight:424.57 22.99Posaconazole Diastereoisomer Related Compound 2
CAS:Formula:C21H21F2N3O4SColor and Shape:White To Off-White SolidMolecular weight:449.48Phenoxymethylpenicillin EP Impurity D
CAS:Formula:C16H18N2O6SColor and Shape:White To Off-White SolidMolecular weight:366.39Linezolid Impurity 41
CAS:Formula:C16H19FN2O5Color and Shape:White To Off-White SolidMolecular weight:338.34Tacrolimus Impurity 12
Formula:C44H69NO12Color and Shape:White To Off-White SolidMolecular weight:804.03Cloxacillin EP Impurity A (Cloxacillin Penicilloic Acid)
CAS:Formula:C19H20ClN3O6SColor and Shape:White To Off-White SolidMolecular weight:453.89Vancomycin EP Impurity D Trifluoroacetate (Desvancosaminylvancomycin B Trifluoroacetate)
CAS:Formula:C59H62Cl2N8O22·C2HF3O2Molecular weight:1306.10 114.02Clarithromycin Impurity 14 (Mixture of Z and E Isomers)
Formula:C49H94N2O13Si2Molecular weight:975.46Cefoperazone Impurity 19
CAS:Formula:C15H17N3O6Color and Shape:White To Off-White SolidMolecular weight:335.32Tiamulin EP Impurity M
CAS:Formula:C24H36O5Color and Shape:White To Off-White SolidMolecular weight:404.55Cephalexin Impurity 6 (N-Ethoxycarbonyl-7-ADCA)
CAS:Formula:C11H14N2O5SColor and Shape:White To Off-White SolidMolecular weight:286.30Terbinafine EP Impurity F HCl
CAS:Formula:C21H25N·HClColor and Shape:Brown SolidMolecular weight:291.44 36.46Penethacillin Hydroiodide (Penethamate Hydroiodide)
CAS:Formula:C22H31N3O4SHIColor and Shape:White To Off-White SolidMolecular weight:433.57 127.91Cefadroxil USP Related Compound I
CAS:Formula:C16H17N3O5SColor and Shape:White To Off-White SolidMolecular weight:363.39Neomycin B Trisulfate (Framycetin Trisulfate)
CAS:Formula:C23H46N6O13·3H2SO4Color and Shape:Off-White SolidMolecular weight:614.65 3*98.08Lovastatin Impurity 2 (Mixture of Diastereomers)
Formula:C24H34O6Color and Shape:White To Off-White SolidMolecular weight:418.53
