
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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Rapamycin (Sirolimus)
CAS:Formula:C51H79NO13Color and Shape:White To Off-White SolidMolecular weight:914.19Linezolid Related Impurity 2 HCl
Formula:C15H22FN3O3·HClColor and Shape:Brown SolidMolecular weight:311.36 36.46Posaconazole Diastereoisomer Related Compound 4
CAS:Formula:C30H35N5O3Color and Shape:Off-White SolidMolecular weight:513.65Micafungin Impurity FR-901379
CAS:Formula:C51H82N8O21SColor and Shape:Off-White SolidMolecular weight:1175.31Spinosad (Mixture of Spinosyn A and Spinosyn D)
CAS:Formula:C41H65NO10·C42H67NO10Color and Shape:White To Off-White SolidMolecular weight:731.97 746.00Cefepime EP Impurity D (Cefepime USP Related Compound D)
CAS:Formula:C6H7N3O3SColor and Shape:White To Off-White SolidMolecular weight:201.20Tetracycline-13C2-d6 (Oxytetracycline EP Impurity B-13C2-d6)
CAS:Formula:C2013C2H18D6N2O8Molecular weight:452.46Cefaclor Impurity 2
CAS:Formula:C17H18N2O3Color and Shape:White To Off-White SolidMolecular weight:298.34Cefixime EP Impurity D
CAS:Formula:C16H15N5O7S2Color and Shape:White To Off-White SolidMolecular weight:453.44Terbinafine Impurity 4 (Mixture of Z and E Isomers)
CAS:Formula:C9H14OColor and Shape:Pale Yellow OilMolecular weight:138.21Amikacin EP Impurity B Formate
CAS:Formula:C26H50N6O15·CH2O2Color and Shape:White To Off-White SolidMolecular weight:686.71 46.03Cilastatin EP Impurity B (Mixture of Diastereomers)
Formula:C21H34N2O6SColor and Shape:White To Off-White SolidMolecular weight:442.57Cefotiam DiHCl
CAS:Formula:C18H23N9O4S3·2HClColor and Shape:Off-White SolidMolecular weight:525.63 2*36.46Mupirocin Impurity 1
CAS:Formula:C27H48O7Color and Shape:White To Off-White SolidMolecular weight:484.67Ciprofloxacin N-Oxide HCl
CAS:Formula:C17H18FN3O4·HClColor and Shape:White To Off-White SolidMolecular weight:347.35 36.46Tedizolid Impurity 30
CAS:Formula:C16H13FN6O3Color and Shape:Pale Yellow SolidMolecular weight:356.32Cefamandole Sodium Salt
CAS:Formula:C18H17N6O5S2·NaColor and Shape:White To Off-White SolidMolecular weight:461.49 22.99Clindamycin Impurity 33 HCl
Formula:C24H46ClN2O8PS·HClColor and Shape:White To Off-White SolidMolecular weight:589.12 36.46Cefepime 7-Epimer Iodide
Formula:C19H25N6O5S2·IColor and Shape:Yellow SolidMolecular weight:481.58 126.90Clindamycin Dehydro Impurity
CAS:Formula:C18H32N2O5SColor and Shape:White To Off-White SolidMolecular weight:388.52Besifloxacin Impurity B
CAS:Formula:C13H8ClF2NO3Color and Shape:Pale Yellow SolidMolecular weight:299.66Potassium Clavulanate EP Impurity K
CAS:Formula:C8H19NColor and Shape:Colorless OilMolecular weight:129.25Posaconazole Impurity 35 Oxalate
Formula:C13H20N2O2·C2H2O4Color and Shape:White To Off-White SolidMolecular weight:236.32 90.03Fosfomycin Disodium Salt
CAS:Formula:C3H5O4P·2NaColor and Shape:White To Off-White SolidMolecular weight:136.04 2*22.99Ciprofloxacin EP Impurity B HCl
CAS:Formula:C17H19N3O3·HClColor and Shape:Yellow SolidMolecular weight:313.36 36.46Linezolid Impurity 21
CAS:Formula:C12H15FN2O3Color and Shape:White To Off-White SolidMolecular weight:254.26Posaconazole Impurity 32
CAS:Formula:C23H23N3O3Color and Shape:Pale Gray SolidMolecular weight:389.46Apramycin Disulfate
CAS:Formula:C21H41N5O11·2H2SO4Color and Shape:Pale Yellow SolidMolecular weight:539.58 2*98.07Enduracidin B Tritrifluoroacetate
CAS:Formula:C108H140Cl2N26O31·3C2HF3O2Color and Shape:Off-White SolidMolecular weight:2369.38 3*114.02Terbinafine Impurity 14 HCl
CAS:Formula:C12H13N·HClColor and Shape:White To Off-White SolidMolecular weight:171.24 36.46Erythromycin EP Impurity J (Pseudoerythromycin A Hemiketal) (1S-Isomer)
CAS:Formula:C37H67NO13Color and Shape:Off-White SolidMolecular weight:733.94Bacitracin EP Impurity E Ditrifluoroacetate (Bacitracin F Ditrifluoroacetate)
CAS:Formula:C66H98N16O17S·2C2HF3O2Color and Shape:White To Off-White SolidMolecular weight:1419.67 2*114.02Azithromycin EP Impurity A (Azathramycin, Desmethyl Azithromycin)
CAS:Formula:C37H70N2O12Color and Shape:White To Off-White SolidMolecular weight:734.97Cefepime EP Impurity A DiHCl
CAS:Formula:C19H24N6O5S2·2HClColor and Shape:Off-White SolidMolecular weight:480.57 2*36.46Cefazedone Impurity 6
CAS:Formula:C17H15Cl2N3O7SColor and Shape:White To Off-White SolidMolecular weight:476.28Desbutyl Lumefantrine HCl
CAS:Formula:C26H24Cl3NO·HClColor and Shape:Yellow SolidMolecular weight:472.83 36.46Cefotaxime EP Impurity C
CAS:Formula:C17H17N5O8S2Color and Shape:Off-White SolidMolecular weight:483.47Linezolid USP Related Compound C
CAS:Formula:C14H18FN3O3Color and Shape:Pale Yellow SolidMolecular weight:295.3125-Deacetyl-23-Acetyl Rifampicin
CAS:Formula:C43H58N4O12Color and Shape:Red SolidMolecular weight:822.95Clavulanic Acid Impurity 7 DiHCl
CAS:Formula:C6H16N2·2HClColor and Shape:White To Off-White SolidMolecular weight:116.21 2*36.46Florfenicol
CAS:Formula:C12H14Cl2FNO4SColor and Shape:White To Off-White SolidMolecular weight:358.22Spiramycin EP Impurity H Ditrifluoroacetate
CAS:Formula:C39H66N2O12·2C2HF3O2Molecular weight:754.96 2*114.02Cefminox Sodium Salt
CAS:Formula:C16H20N7O7S3·NaColor and Shape:Off-White SolidMolecular weight:518.57 22.99Neomycin Sulfate EP Impurity D TriHCl (Paromamine TriHCl)
CAS:Formula:C12H25N3O7·3HClMolecular weight:323.35 3*36.46Clindamycin EP Impurity B
CAS:Formula:C17H31ClN2O5SColor and Shape:Pale Yellow SolidMolecular weight:410.95Cefditoren Sodium Salt
CAS:Formula:C19H17N6O5S3·NaColor and Shape:Yellow SolidMolecular weight:505.56 22.99Moxifloxacin Impurity 37 Ditrifluoroacetate
Formula:C21H24FN3O5·2C2HF3O2Molecular weight:417.44 2*114.02Cefdinir Glyoxalic Analog
CAS:Formula:C14H12N4O5S2Color and Shape:Yellow SolidMolecular weight:380.39Fosfomycin Trometamol EP Impurity C
CAS:Formula:C4H12NO6PColor and Shape:Colorless Sticky Semi-SolidMolecular weight:201.11Enoxacin HCl
CAS:Formula:C15H17FN4O3·HClColor and Shape:White To Off-White SolidMolecular weight:320.32 36.46N-Nitroso-N-Desmethyl Tetracycline (N-Nitroso-N-Desmethyl Oxytetracycline EP Impurity B)
Formula:C21H21N3O9Molecular weight:459.41Cefotaxime Impurity 2 Triethylamine Salt
Formula:C21H18N6O5S4·Et3NColor and Shape:Off-White SolidMolecular weight:562.67 101.19Cefoxitin EP Impurity C (Cefalonium Impurity C)
CAS:Formula:C14H12N2O4S2Color and Shape:White To Off-White SolidMolecular weight:336.39Virginiamycin M1 (Pristinamycin IIA)
CAS:Formula:C28H35N3O7Color and Shape:Off-White SolidMolecular weight:525.61Norvancomycin HCl (Vancomycin EP Impurity A HCl)
CAS:Formula:C65H73Cl2N9O24·HClMolecular weight:1435.24 36.46Eribulin Mesylate
CAS:Formula:C40H59NO11·CH4O3SColor and Shape:Pale Yellow SolidMolecular weight:729.91 96.10Sisomicin (Netilmicin EP Impurity A)
CAS:Formula:C19H37N5O7Color and Shape:White To Off-White SolidMolecular weight:447.53Cloxacillin EP Impurity D (Cloxacillin USP Related Compound D)
CAS:Formula:C11H8ClNO3Color and Shape:Pale Yellow SolidMolecular weight:237.64Fidaxomicin Metabolite OP-1118
CAS:Formula:C48H68Cl2O17Color and Shape:White To Off-White SolidMolecular weight:987.96Linezolid Impurity 33
Formula:C21H24F2N4O3Color and Shape:White To Off-White SolidMolecular weight:418.44Ceftolozane Impurity 14
CAS:Formula:C10H13N5O6SColor and Shape:Off-White SolidMolecular weight:331.30Vancomycin 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:715.92Enramycin (Mixture of Enduracidin A and Enduracidin B)
CAS:Formula:C107H138Cl2N26O31C108H140Cl2N26O31Color and Shape:Off-White SolidMolecular weight:2355.33; 2369.36Ampicillin EP Impurity D Disodium Salt (Mixture of Diastereomers)
CAS:Formula:C16H19N3O5S·2NaColor and Shape:Off-White SolidMolecular weight:365.41 2*22.99Cefaclor EP Impurity H
Formula:C23H21ClN4O5SColor and Shape:White To Off-White SolidMolecular weight:500.95Bacitracin EP Impurity A Tritrifluoroacetate
CAS:Formula:C64H99N17O16S·3C2HF3O2Molecular weight:1394.66 3*114.02Mupirocin Lithium Salt
CAS:Formula:C26H43O9·LiColor and Shape:White To Off-White SolidMolecular weight:499.63 6.94Posaconazole Piperazine N1-Oxide
CAS:Formula:C37H42F2N8O5Color and Shape:White To Off-White SolidMolecular weight:716.79Bacitracin A-d7 Tritrifluoroacetate
CAS:Formula:C66H96D7N17O16S·3C2HF3O2Molecular weight:1429.76 3*114.02Linezolid USP Related Compound C Tosylate
CAS:Formula:C14H18FN3O3·C7H8O3SColor and Shape:Off-White SolidMolecular weight:295.32 172.20Micafungin Metabolite M1
CAS:Formula:C56H71N9O20Color and Shape:White To Off-White SolidMolecular weight:1190.23Rifampicin EP Impurity B (Rifampicin N-Oxide)
CAS:Formula:C43H58N4O13Color and Shape:Red SolidMolecular weight:838.95Amoxicillin Impurity 6 Trifluoroacetate
Formula:C16H19N3O6S·C2HF3O2Color and Shape:Yellow SolidMolecular weight:381.40 114.02Tedizolid Impurity 22
CAS:Formula:C16H14FN6O6PColor and Shape:Pale Yellow SolidMolecular weight:436.30Chloramphenicol EP Impurity B
CAS:Formula:C7H5NO3Color and Shape:White To Off-White SolidMolecular weight:151.12Ivermectin EP Impurity I (4S-Isomer)
CAS:Formula:C48H74O14Color and Shape:Off-White SolidMolecular weight:875.11Spiramycin EP Impurity B
CAS:Formula:C43H76N2O14Color and Shape:White To Off-White SolidMolecular weight:845.08Moxifloxacin Ethyl Ester
CAS:Formula:C23H28FN3O4Color and Shape:White To Off-White SolidMolecular weight:429.49Clarithromycin EP Impurity I
CAS:Formula:C30H55NO10Color and Shape:White To Off-White SolidMolecular weight:589.77Tacrolimus Impurity 1
CAS:Formula:C43H69NO11Color and Shape:White To Off-White SolidMolecular weight:776.02Posaconazole Diastereoisomer Related Compound 6
CAS:Formula:C30H35N5O3Color and Shape:White To Off-White SolidMolecular weight:513.65Dicloxacillin-13C4 Sodium Salt
CAS:Formula:C1513C4H16Cl2N3O5S·NaColor and Shape:White To Off-White SolidMolecular weight:473.28 22.99Moxifloxacin Impurity 10
CAS:Formula:C17H17F2NO4Color and Shape:White To Off-White SolidMolecular weight:337.32Ceftibuten Disodium Salt (Mixture of E and Z Isomers)
CAS:Formula:C15H12N4O6S2·2NaMolecular weight:408.40 2*22.99Ampicillin EP Impurity H (Cefaclor EP Impurity F)
CAS:Formula:C10H8N2OColor and Shape:Pale Yellow SolidMolecular weight:172.19Ceftazidime Impurity 5
CAS:Formula:C20H22N4O4S3Color and Shape:Pale Yellow SolidMolecular weight:478.60Erythromycin Impurity 2
Formula:C37H66N2O14Color and Shape:White To Off-White SolidMolecular weight:762.94Lincomycin EP Impurity C HCl
CAS:Formula:C17H32N2O6S·HClColor and Shape:White To Ff-White SolidMolecular weight:392.52 36.46Clavulanate Lithium
CAS:Formula:C8H8NO5·LiColor and Shape:White To Off-White SolidMolecular weight:198.16 6.94Mitomycin Related Compound 1 Trifluoroacetate (Mixture of Diastereomers)
CAS:Formula:C14H16N4O5·C2HF3O2Molecular weight:320.31 114.02rac-Posaconazole Diastereoisomer Related Compound 3
Formula:C30H35N5O3Color and Shape:White To Off-White SolidMolecular weight:513.65Faropenem Impurity 32
CAS:Formula:C21H35NO6SSiColor and Shape:Colorless LiquidMolecular weight:457.66Clindamycin Stearate HCl
CAS:Formula:C36H67ClN2O6S·HClColor and Shape:White To Off-White SolidMolecular weight:691.46 36.46Cefazolin 3-Hydroxymethyl Impurity Sodium Salt
CAS:Formula:C11H11N6O5S·NaMolecular weight:339.31 22.99Moxifloxacin Hydroxy Quinoline Impurity
CAS:Formula:C13H9F2NO4Color and Shape:White To Off-White SolidMolecular weight:281.21Patupilone (Epothilone B)
CAS:Formula:C27H41NO6SColor and Shape:White To Off-White SolidMolecular weight:507.69Formyl DL-Penicillamine
CAS:Formula:C6H11NO3SColor and Shape:White To Off-White SolidMolecular weight:177.22Clindamycin EP Impurity C (7-epi Clindamycin)
CAS:Formula:C18H33ClN2O5SColor and Shape:Yellow SolidMolecular weight:424.98δ 2-Cefcapene Pivoxil
CAS:Formula:C23H29N5O8S2Color and Shape:White To Off-White SolidMolecular weight:567.63Phenoxymethylpenicillin EP Impurity D
CAS:Formula:C16H18N2O6SColor and Shape:White To Off-White SolidMolecular weight:366.397-Iodo Sancycline Trifluoroacetate
CAS:Formula:C21H21IN2O7·C2HF3O2Color and Shape:Yellow SolidMolecular weight:540.31 114.02Ceftazidime EP Impurity B Trifluoroacetate
CAS:Formula:C22H22N6O7S2·C2HF3O2Color and Shape:White To Off-White SolidMolecular weight:546.57 114.02Ampicillin EP Impurity B (L-Ampicillin)
CAS:Formula:C16H19N3O4SColor and Shape:White To Off-White SolidMolecular weight:349.41Dicloxacillin Sodium EP Impurity A HCl (Mixture of Diastereomers)
Formula:C19H19Cl2N3O6S·HClColor and Shape:White To Off-White SolidMolecular weight:488.34 36.46Piperacillin-d5 (N-ethyl-d5)
CAS:Formula:C23H22D5N5O7SColor and Shape:White To Off-White SolidMolecular weight:522.59Azithromycin EP Impurity M
CAS:Formula:C37H68N2O13Color and Shape:White To Off-White SolidMolecular weight:748.95Cilastatin EP Impurity A HCl (Mixture of Diastereomers)
Formula:C16H26N2O6S·HClColor and Shape:White To Off-White SolidMolecular weight:374.45 36.46Clindamycin Hydrochloride EP Impurity F HCl
CAS:Formula:C18H33ClN2O5S·HClColor and Shape:Off-White SolidMolecular weight:424.99 36.46Linezolid Impurity 30
Formula:C17H22FN3O4Color and Shape:White To Off-White SolidMolecular weight:351.38
