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 6335 products of "Natural and semi-synthetic antibiotics"
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Clavulanate Lithium
CAS:Formula:C8H8NO5·LiColor and Shape:White To Off-White SolidMolecular weight:198.16 6.94Griseofulvin-13C-d3
CAS:Formula:C1613CH14D3ClO6Color and Shape:White To Off-White SolidMolecular weight:356.783-Ethyl Cefadroxil Trifluoroacetate
Formula:C17H19N3O5S·C2HF3O2Color and Shape:Pale Brown To Off-White SolidMolecular weight:377.42 114.0225-Deacetyl-21-Acetyl Rifampicin
CAS:Formula:C43H58N4O12Color and Shape:Red SolidMolecular weight:822.95Ceftezole Impurity 3 HCl
CAS:Formula:C10H10N4O3S3·HClColor and Shape:White To Off-White SolidMolecular weight:330.41 36.46rac-Posaconazole Diastereoisomer Related Compound 3
Formula:C30H35N5O3Color and Shape:White To Off-White SolidMolecular weight:513.65Piperacillin Sulfoxide
CAS:Formula:C23H27N5O8SColor and Shape:White To Off-White SolidMolecular weight:533.56Ertapenem Impurity 20
CAS:Formula:C40H36N6O14S2Color and Shape:White To Off-White SolidMolecular weight:888.88Cefotaxime Impurity 4
CAS:Formula:C16H16N5O7S2Color and Shape:White To Off-White SolidMolecular weight:455.46Posaconazole Diastereoisomer Related Compound 6
CAS:Formula:C30H35N5O3Color and Shape:White To Off-White SolidMolecular weight:513.65Dihydropenicillin F Potassium Salt (Benzylpenicillin Potassium EP Impurity H Potassium Salt (Benzylpenicillin (Benzathine) EP Impurity I Potassium Salt, Benzylpenicillin (Procaine) EP Impurity H Potassium Salt, Benzylpenicillin Sodium EP Impurity H Potassium Salt)
CAS:Formula:C14H21N2O4S·KColor and Shape:White To Off-White SolidMolecular weight:313.40 39.10Cefixime EP Impurity C (Cefixime 7-epimer) Disodium Salt
CAS:Formula:C16H13N5O7S2·2NaColor and Shape:Pale Brown SolidMolecular weight:451.43 2*22.99Moxifloxacin Impurity 10
CAS:Formula:C17H17F2NO4Color and Shape:White To Off-White SolidMolecular weight:337.32δ 2-Cefcapene Pivoxil
CAS:Formula:C23H29N5O8S2Color and Shape:White To Off-White SolidMolecular weight:567.63Cefotaxime EP Impurity D Sodium Salt ((E)-Cefotaxime Sodium Salt)
CAS:Formula:C16H16N5O7S2·NaColor and Shape:Pale Brown SolidMolecular weight:454.45 22.99Ceftriaxone-d3 Disodium Salt
CAS:Formula:C18H13D3N8O7S3·2NaColor and Shape:Off-White SolidMolecular weight:555.57 2*22.99Ampicillin EP Impurity K
CAS:Formula:C13H17NO3Color and Shape:White To Off-White SolidMolecular weight:235.28Clavulanic Acid Impurity 10 HCl
CAS:Formula:C4H11N·HClColor and Shape:White To Off-White SolidMolecular weight:73.14 36.46Besifloxacin HCl
CAS:Formula:C19H21ClFN3O3·HClColor and Shape:Pale Yellow SolidMolecular weight:393.84 36.46Posaconazole Impurity 79
CAS:Formula:C11H10F2O2Color and Shape:White To Off-White SolidMolecular weight:212.20Cefpodoxime Proxetil EP Impurity G (Mixture of Diastereomers)
CAS:Formula:C23H29N5O10S2Color and Shape:White To Off-White SolidMolecular weight:599.63Polymyxin B3 Pentatrifluoroacetate
CAS:Formula:C55H96N16O13·5C2HF3O2Color and Shape:White To Off-White SolidMolecular weight:1189.47 5*114.02Cefepime Impurity 1
Formula:C10H16N4O4SColor and Shape:White To Off-White SolidMolecular weight:288.32Clindamycin Sulfoxide
CAS:Formula:C18H33ClN2O6SColor and Shape:White To Off-White SolidMolecular weight:440.98Chloramphenicol-d4
CAS:Formula:C11H8D4Cl2N2O5Color and Shape:Pale Yellow SolidMolecular weight:327.15Clindamycin Impurity 6
CAS:Formula:C21H37ClN2O5SColor and Shape:Pale Yellow SolidMolecular weight:465.05Bacitracin EP Impurity H Ditrifluoroacetate (Mixture of Diastereomers)
CAS:Formula:C65H96N16O17S·2C2HF3O2Molecular weight:1405.64 2*114.02Bacitracin B3 Tritrifluoroacetate
CAS:Formula:C65H101N17O16S·3C2HF3O2Molecular weight:1408.69 3*114.02Bacitracin Impurity 2
CAS:Formula:C23H22N2O4SColor and Shape:White To Off-White SolidMolecular weight:422.50Decarboxy Moxifloxacin HCl
CAS:Formula:C20H24FN3O2·HClColor and Shape:Yellow SolidMolecular weight:357.43 36.46Emamectin-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)Tedizolid Impurity 53
Formula:C19H20FN6O6PColor and Shape:White To Off-White SolidMolecular weight:478.38Cefpodoxime Proxetil EP Impurity A -d3 Sodium Salt (Cefpodoxime-d3 Acid Sodium Salt)
CAS:Formula:C15H13D3N5O6S2·NaColor and Shape:Pale Yellow SolidMolecular weight:429.47 22.99Cefoperazone-d5
CAS:Formula:C25H22D5N9O8S2Color and Shape:White To Off-White SolidMolecular weight:650.70Rifabutin EP Impurity D (3-Amino-4-Imido Rifamycin S)
CAS:Formula:C37H47N3O11Color and Shape:Dark Red SolidMolecular weight:709.79Linezolid USP Related Compound C
CAS:Formula:C14H18FN3O3Color and Shape:Pale Yellow SolidMolecular weight:295.31Cefdinir 3-Isomer Sodium Salt
CAS:Formula:C14H13N5O5S2·NaColor and Shape:Pale Yellow SolidMolecular weight:394.40 22.99Cilastatin Impurity 3
Formula:C13H21NO4Color and Shape:White To Off-White SolidMolecular weight:255.31Polymyxin 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:714.77Cefixime EP Impurity B (Mixture of Diastereomers)
Formula:C15H17N5O6S2Color and Shape:Pale Yellow SolidMolecular weight:427.45Tazobactam Acid Impurity 13
CAS:Formula:C23H22N4O5SColor and Shape:White To Off-White SolidMolecular weight:466.51Erythromycin A (6,9-Imino Ether)
CAS:Formula:C37H66N2O12Color and Shape:White To Off-White SolidMolecular weight:730.94Posaconazole Impurity 8
Formula:C29H37N5O3Color and Shape:White To Off-White SolidMolecular weight:503.65Cefpodoxime Proxetil EP Impurity D (Mixture of Diastereomers)
CAS:Formula:C21H27N5O9S2Molecular weight:557.59Griseofulvin EP Impurity B (Dechloro Griseofulvin)
CAS:Formula:C17H18O6Color and Shape:Off-White SolidMolecular weight:318.33Besifloxacin Impurity D
Formula:C32H28Cl2F2N4O6Color and Shape:Pale Yellow SolidMolecular weight:673.49N-Nitroso Caspofungin Ditrifluoroacetate
Formula:C52H87N11O16·2C2HF3O2Molecular weight:1122.33 2*114.02Posaconazole Diastereoisomer 5 (S,R,R,S)
CAS:Formula:C37H42F2N8O4Color and Shape:White To Off-White SolidMolecular weight:700.80Moxifloxacin Impurity 17
CAS:Formula:C15H12F3NO3Color and Shape:White To Off-White SolidMolecular weight:311.26Cefotaxime EP Impurity C
CAS:Formula:C17H17N5O8S2Color and Shape:Off-White SolidMolecular weight:483.47Benzylposaconazole Enantiomer
Formula:C44H48F2N8O4Color and Shape:White To Off-White SolidMolecular weight:790.92Desbutyl Lumefantrine
CAS:Formula:C26H24Cl3NOColor and Shape:Pale Yellow SolidMolecular weight:472.85Tiamulin EP Impurity J
CAS:Formula:C22H34O4Color and Shape:White To Off-White SolidMolecular weight:362.51Desbutyl Lumefantrine HCl
CAS:Formula:C26H24Cl3NO·HClColor and Shape:Yellow SolidMolecular weight:472.83 36.46Cefmetazole Impurity 47
Formula:C15H17N7O5S3Color and Shape:White To Off-White SolidMolecular weight:471.53Clindamycin Impurity 30
CAS:Formula:C18H35N2O9PSColor and Shape:White To Off-White SolidMolecular weight:486.52Ertapenem Impurity Pro-maba
CAS:Formula:C12H14N2O3Color and Shape:White To Off-White SolidMolecular weight:234.26Cephalexin Impurity J (Cephalexin Sulfoxide)
CAS:Formula:C16H17N3O5SColor and Shape:Off-White SolidMolecular weight:363.39Lincomycin 3,4-Phosphate
Formula:C18H33N2O8PSColor and Shape:White To Off-White SolidMolecular weight:468.50Moxifloxacin Impurity 18
CAS:Formula:C14H13FN2O4Color and Shape:Off-White SolidMolecular weight:292.27Cefazedone Impurity 6
CAS:Formula:C17H15Cl2N3O7SColor and Shape:White To Off-White SolidMolecular weight:476.28Piperacillin Sodium EP Impurity P
Formula:C31H34N6O8SColor and Shape:White To Off-White SolidMolecular weight:650.71Gatifloxacin Impurity 3 HCl (Desethylene Gatifloxacin HCl)
CAS:Formula:C17H20FN3O4·HClColor and Shape:Off-White SolidMolecular weight:349.37 36.46Tetracycline EP Impurity D (Chlortetracycline EP Impurity I, Lymecycline EP Impurity D, 4-Epianhydrotetracycline)
CAS:Formula:C22H22N2O7Molecular weight:426.43Cefalotin EP Impurity A
CAS:Formula:C14H14N2O4S2Color and Shape:Off-White SolidMolecular weight:338.40Cefathiamidine-d14
CAS:Formula:C19H14N4O6S2D14Color and Shape:White To Off-White SolidMolecular weight:486.67Ceftibuten Impurity 4
CAS:Formula:C28H26N2O5SColor and Shape:White To Off-White SolidMolecular weight:502.59Ertapenem Impurity 1 Trisodium Salt (Ring Open)
CAS:Formula:C22H24N3O8S·3NaColor and Shape:Yellow SolidMolecular weight:490.52 3*22.99Formyl L-Penicillamine
CAS:Formula:C6H11NO3SColor and Shape:White To Off-White SolidMolecular weight:177.22Sparfloxacin Impurity 4 Sodium Salt
CAS:Formula:C19H23F2N4O3·NaColor and Shape:Yellow SolidMolecular weight:393.42 22.99Ceftazidime Impurity 1
CAS:Formula:C13H19N3O5SColor and Shape:White To Off-White SolidMolecular weight:329.37Polymyxin B6 Pentatrifluoroacetate (Mixture of Diastereomers)
CAS:Formula:C56H98N16O14·5C2HF3O2Color and Shape:White To Off-White SolidMolecular weight:1219.50 5*114.02Benzylposaconazole
CAS:Formula:C44H48F2N8O4Color and Shape:White To Off-White SolidMolecular weight:790.92Ceftazidime EP Impurity E
CAS:Formula:C26H30N6O7S2Color and Shape:White To Off-White SolidMolecular weight:602.68Clarithromycin EP Impurity N
CAS:Formula:C38H67NO12Color and Shape:White To Off-White SolidMolecular weight:729.95Cefprozil Impurity 4
Formula:C17H19N3O6SColor and Shape:White To Off-White SolidMolecular weight:393.41N-Desmethyl Dirithromycin
CAS:Formula:C41H76N2O14Color and Shape:White To Off-White SolidMolecular weight:821.06Lomefloxacin Impurity 2 HCl
Formula:C17H20FN3O4·HClColor and Shape:White To Off-White SolidMolecular weight:349.36 36.46Potassium Clavulanate EP Impurity J
CAS:Formula:C6H16N2Color and Shape:Colourless LiquidMolecular weight:116.21Pivmecillinam EP Impurity C HCl ((2R,4S)-Isomer)
CAS:Formula:C20H35N3O4S·HClMolecular weight:413.58 36.46Ceftaroline Fosamil Impurity 27
Formula:C29H26N2O7S2Color and Shape:White To Off-White SolidMolecular weight:578.65Lovastatin EP Impurity F
CAS:Formula:C24H34O5Color and Shape:White To Off-White SolidMolecular weight:402.53Florfenicol
CAS:Formula:C12H14Cl2FNO4SColor and Shape:White To Off-White SolidMolecular weight:358.22Ceftazidime Impurity 17 Ditrifluoroacetate
Formula:C26H30N6O7S2·2C2HF3O2Color and Shape:Off-White SolidMolecular weight:602.68 2*114.02Ceftolozane Impurity 13
CAS:Formula:C8H11N5O4SColor and Shape:White To Off-White SolidMolecular weight:273.271-[(4R,5R)-4,5-Dihydroxy-L-ornithine]-Echinocandin B HCl
CAS:Formula:C34H51N7O15·HClColor and Shape:White To Off-White SolidMolecular weight:797.82 36.46Bacitracin EP Impurity I Ditrifluoroacetate
CAS:Formula:C64H94N16O17S·2C2HF3O2Molecular weight:1391.61 2*114.02Clarithromycin EP Impurity M
CAS:Formula:C37H68N2O13Color and Shape:White To Off-White SolidMolecular weight:748.95Potassium Clavulanate EP Impurity G Enantiomer
CAS:Formula:C13H15NO6Color and Shape:White To Off-White SolidMolecular weight:281.26Azithromycin Impurity 3
CAS:Formula:C38H74N2O13Color and Shape:White To Off-White SolidMolecular weight:767.01Amoxicillin EP Impurity G (Amoxicillin USP Related Compound G)
CAS:Formula:C24H26N4O7SColor and Shape:White To Off-White SolidMolecular weight:514.55Rapamycin (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:513.65Eprinomectin (Mixture of B1a and B1b)
CAS:Formula:C50H75NO14C49H73NO14Color and Shape:White To Off-White SolidMolecular weight:914.14 (component B1a); 900.12 (componenCefotaxime EP Impurity A (Cefetamet)
CAS:Formula:C14H15N5O5S2Color and Shape:White To Off-White SolidMolecular weight:397.42Micafungin Impurity FR-901379
CAS:Formula:C51H82N8O21SColor and Shape:Off-White SolidMolecular weight:1175.31Cefaclor-d5
CAS:Formula:C15H9D5ClN3O4SColor and Shape:White To Off-White SolidMolecular weight:372.83Cefepime EP Impurity D (Cefepime USP Related Compound D)
CAS:Formula:C6H7N3O3SColor and Shape:White To Off-White SolidMolecular weight:201.20Cefprozil EP Impurity D (Cefprozil USP Related Compound D)
CAS:Formula:C10H12N2O3SColor and Shape:White To Off-White SolidMolecular weight:240.28Tetracycline-13C2-d6 (Oxytetracycline EP Impurity B-13C2-d6)
CAS:Formula:C2013C2H18D6N2O8Molecular weight:452.46Tedizolid-13C-d3
CAS:Formula:C1613CH12D3FN6O3Color and Shape:White To Off-White SolidMolecular weight:374.36Linezolid Impurity 32 HCl
CAS:Formula:C15H22FN3O3·HClColor and Shape:White To Off-White SolidMolecular weight:311.36 36.46Cefaclor Impurity 2
CAS:Formula:C17H18N2O3Color and Shape:White To Off-White SolidMolecular weight:298.34Posaconazole Impurity 11 (POS-B)
Formula:C60H69F2N13O7Color and Shape:Off-White SolidMolecular weight:1122.29Cefditoren Impurity 16
CAS:Formula:C33H36N6O8S3Color and Shape:Pale Yellow SolidMolecular weight:740.87Cefixime EP Impurity A Disodium Salt (Mixture of Diastereomers)
CAS:Formula:C16H15N5O8S2·2NaMolecular weight:469.45 2*22.99Cefazolin EP Impurity L
Formula:C14H14N8O4S3Color and Shape:White To Off-White SolidMolecular weight:454.51Lomefloxacin Impurity 4 DiHCl
CAS:Formula:C17H19ClFN3O3·2HClColor and Shape:Off-White SolidMolecular weight:367.81 2*36.46Nafcillin-d5 Sodium Salt
CAS:Formula:C21H16D5N2O5S·NaColor and Shape:White To Off-White SolidMolecular weight:418.50 22.99Cefminox Sodium Impurity 3
Formula:C16H21N7O7S3Color and Shape:White To Off-White SolidMolecular weight:519.57Terbinafine 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 46.03Moxifloxacin Impurity 31 HCl
CAS:Formula:C21H22FN3O4·HClColor and Shape:White To Off-White SolidMolecular weight:399.43 36.46Cilastatin EP Impurity B (Mixture of Diastereomers)
Formula:C21H34N2O6SColor and Shape:White To Off-White SolidMolecular weight:442.57Posaconazole Impurity 80
CAS:Formula:C21H20F2N4O3Color and Shape:Off-White SolidMolecular weight:414.42Polymyxin B2-d7 Pentatrifluoroacetate
Formula:C55H89D7N16O13·5C2HF3O2Molecular weight:1196.51 5*114.02Mupirocin Impurity 1
CAS:Formula:C27H48O7Color and Shape:White To Off-White SolidMolecular weight:484.67Bacitracin B2 Tritrifluoroacetate
CAS:Formula:C65H101N17O16S·3C2HF3O2Molecular weight:1408.69 3*114.02
![1-[(4R,5R)-4,5-Dihydroxy-L-ornithine]-Echinocandin B HCl](/_next/image/?url=https%3A%2Fstatic.cymitquimica.com%2Fproducts%2F4Z%2Fthumb-webp%2FPE-177001.webp&w=3840&q=75)
