
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"
Sort by
Purity (%)
0
100
|
0
|
50
|
90
|
95
|
100
Tedizolid Impurity 53
Formula:C19H20FN6O6PColor and Shape:White To Off-White SolidMolecular weight:478.38Cefprozil EP Impurity N
CAS:Formula:C21H23N3O7SColor and Shape:Pale Yellow SolidMolecular weight:461.49Cefpodoxime Proxetil EP Impurity A -d3 Sodium Salt (Cefpodoxime-d3 Acid Sodium Salt)
CAS:Formula:C15H13D3N5O6S2·NaColor and Shape:Pale Yellow SolidMolecular weight:429.47 22.99Tobramycin Impurity 5
Formula:C23H36N2O7Color and Shape:White To Off-White SolidMolecular weight:452.55Bacitracin B3 Tritrifluoroacetate
CAS:Formula:C65H101N17O16S·3C2HF3O2Molecular weight:1408.69 3*114.02Cefazolin EP Impurity C
CAS:Formula:C11H12N6O4SColor and Shape:White To Off-White SolidMolecular weight:324.32Cefpodoxime Proxetil Impurity 6 (Mixture of Diastereomers)
CAS:Formula:C20H25N5O9S2Molecular weight:543.57Nafcillin-d5 Sodium Salt
CAS:Formula:C21H16D5N2O5S·NaColor and Shape:White To Off-White SolidMolecular weight:418.50 22.99Vancomycin-13C-d3 Ditrifluoroacetate
CAS:Formula:C6513CH72D3Cl2N9O24·2C2HF3O2Molecular weight:1453.28 2*114.02Clindamycin Laurate HCl
CAS:Formula:C30H55ClN2O6S·HClColor and Shape:White To Off-White SolidMolecular weight:607.29 36.46Omacetaxine Mepesuccinate (Homoharringtonine)
CAS:Formula:C29H39NO9Color and Shape:White To Off-White SolidMolecular weight:545.63Oxytetracycline EP Impurity F HCl (Anhydro-Oxytetracycline HCl, Dehydrotetracycline HCl)
CAS:Formula:C22H22N2O8·HClMolecular weight:442.43 36.46Sisomicin (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:237.64Cefamandole EP Impurity E
CAS:Formula:C19H18N2O8SColor and Shape:White To Off-White SolidMolecular weight:434.42Vancomycin 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:715.92Cefazolin Impurity 32 Ammonium Salt
CAS:Formula:C3H5N2OS2·NH4Color and Shape:Pale Yellow SolidMolecular weight:149.21 18.041-[(4R,5R)-4,5-Dihydroxy-L-ornithine]-Echinocandin B HCl
CAS:Formula:C34H51N7O15·HClColor and Shape:White To Off-White SolidMolecular weight:797.82 36.46Cefoperazone EP Impurity F
CAS:Formula:C25H27N9O8S2Color and Shape:White To Off-White SolidMolecular weight:645.67Cefadroxil Impurity 4 (Mixture of Diastereomers)
Formula:C24H24N4O7SColor and Shape:White To Off-White SolidMolecular weight:512.54Posaconazole Diastereoisomer Related Compound 2
CAS:Formula:C21H21F2N3O4SColor and Shape:White To Off-White SolidMolecular weight:449.48Moxidectin EP Impurity H
Formula:C37H51NO7Color and Shape:White To Off-White SolidMolecular weight:621.823-Hydroxy Azithromycinoic Acid
CAS:Formula:C30H60N2O10Color and Shape:White To Off-White SolidMolecular weight:608.81Tacrolimus EP Impurity I (Tacrolimus Diene)
CAS:Formula:C44H67NO11Color and Shape:White To Off-White SolidMolecular weight:786.02Bacitracin A-d7 Tritrifluoroacetate
CAS:Formula:C66H96D7N17O16S·3C2HF3O2Molecular weight:1429.76 3*114.02Ceftriaxone EP Impurity A Disodium Salt ((E)-Ceftriaxone Disodium Salt)
CAS:Formula:C18H16N8O7S3·2NaColor and Shape:Off-White SolidMolecular weight:552.57 2*22.99Linezolid Impurity 45
Formula:C21H29FN4O6Color and Shape:White To Off-White SolidMolecular weight:452.48Ampicillin EP Impurity G
CAS:Formula:C16H14N2O2Color and Shape:White To Off-White SolidMolecular weight:266.30Clarithromycin 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:335.32Penicillamine Impurity 1
CAS:Formula:C10H20N2O4S3Color and Shape:White To Off-White SolidMolecular weight:328.46Rifampicin EP Impurity B (Rifampicin N-Oxide)
CAS:Formula:C43H58N4O13Color and Shape:Red SolidMolecular weight:838.95Penethacillin Hydroiodide (Penethamate Hydroiodide)
CAS:Formula:C22H31N3O4SHIColor and Shape:White To Off-White SolidMolecular weight:433.57 127.91Tedizolid Impurity 22
CAS:Formula:C16H14FN6O6PColor and Shape:Pale Yellow SolidMolecular weight:436.30Cefadroxil 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*98.08Linezolid Impurity 8 HCl
CAS:Formula:C13H18ClFN2O2·HClColor and Shape:White To Off-White SolidMolecular weight:288.75 36.46Posaconazole Impurity 55
CAS:Formula:C37H40F2N8O6Color and Shape:White To Off-White SolidMolecular weight:730.77Polymyxin B1-d7 Pentatrifluoroacetate
Formula:C56H91D7N16O13·5C2HF3O2Molecular weight:1210.54 5*114.02Dicloxacillin Degradation Impurity (DCMICAA)
CAS:Formula:C13H10Cl2N2O4Color and Shape:White To Off-White SolidMolecular weight:329.13Cefdinir Impurity 6 (Thiazolylacetylglycine Oxime Acetal)
CAS:Formula:C7H10N4O4S·C7H8N4O3SColor and Shape:Pale Yellow SolidMolecular weight:246.24 228.23Bacitracin A
CAS:Formula:C66H103N17O16SColor and Shape:White To Off-White SolidMolecular weight:1422.71Clindamycin Phosphate EP Impurity B (Clindamycin B 2-Phosphate)
CAS:Formula:C17H32ClN2O8PSMolecular weight:490.93Tedizolid Phosphate N-Oxide
Formula:C17H16FN6O7PColor and Shape:Pale Yellow SolidMolecular weight:466.32Cefalexin (Cephalexin) EP Impurity D (Cefradine EP Impurity F, Cefadroxil EP Impurity G, Cephalexin USP Related Compound D)
CAS:Formula:C5H6O2SColor and Shape:Off-White SolidMolecular weight:130.16Flucloxacillin EP Impurity B (Mixture of Diastereomers)
CAS:Formula:C18H19ClFN3O4SColor and Shape:White To Off-White SolidMolecular weight:427.88Aztreonam Impurity 18 DiHCl
Formula:C15H23N5O6S·2HClColor and Shape:White To Off-White SolidMolecular weight:401.44 2*36.46Cefdinir Isoxazole Analog
CAS:Formula:C13H11N3O6SColor and Shape:Off-White SolidMolecular weight:337.31Tigecycline Impurity 9 Ditrifluoroacetate (Tigecycline Quinone Analog Ditrifluoroacetate)
CAS:Formula:C26H32N4O8·2C2HF3O2Molecular weight:528.57 2*114.02Erythromycin EP Impurity E (Erythromycin A Enol Ether)
CAS:Formula:C37H65NO12Color and Shape:White To Off-White SolidMolecular weight:715.92Clarithromycin EP Impurity K
CAS:Formula:C30H51NO8Color and Shape:White To Off-White SolidMolecular weight:553.74Cefixime EP Impurity D
CAS:Formula:C16H15N5O7S2Color and Shape:White To Off-White SolidMolecular weight:453.44E-Ceftizoxime Sodium Salt
CAS:Formula:C13H12N5O5S2·NaColor and Shape:White To Off-White SolidMolecular weight:382.39 22.99Meropenem EP Impurity A Disodium Salt
CAS:Formula:C17H25N3O6S·2NaColor and Shape:Pale Yellow Sticky SolidMolecular weight:399.46 2*22.99Terbinafine EP Impurity C (Terbinafine USP Related Compound C (Free Form))
CAS:Formula:C21H25NColor and Shape:White To Off-White SolidMolecular weight:291.44Polymyxin B6 Impurity 1 Sodium Salt
CAS:Formula:C9H17O3·NaColor and Shape:White To Off-White SolidMolecular weight:173.23 22.99Penicillin F Potassium Salt
CAS:Formula:C14H19N2O4S·KColor and Shape:White To Off-White SolidMolecular weight:311.38 39.10Potassium Clavulanate EP Impurity H
CAS:Formula:C4H11NColor and Shape:Colorless LiquidMolecular weight:73.14Cycloserine Diketopiperazine (Mixture of Diastereomers)
CAS:Formula:C6H12N4O4Color and Shape:White To Off-White SolidMolecular weight:204.19Cefaclor EP Impurity C HCl
CAS:Formula:C15H14ClN3O4S·HClColor and Shape:Off-White SolidMolecular weight:367.80 36.46Sulbactam EP Impurity A (Sulbactam USP Related Compound A)
CAS:Formula:C5H11NO4SColor and Shape:White To Off-White SolidMolecular weight:181.21Cefpodoxime Proxetil Impurity 5 (Mixture of Diastereomers)
Formula:C30H37N7O12S3Color and Shape:White To Off-White SolidMolecular weight:783.84Clindamycin Impurity 33 HCl
Formula:C24H46ClN2O8PS·HClColor and Shape:White To Off-White SolidMolecular weight:589.12 36.46Azithromycin EP Impurity I (N-Desmethyl Azithromycin)
CAS:Formula:C37H70N2O12Color and Shape:White To Off-White SolidMolecular weight:734.97Rifampicin EP Impurity A (Rifampicin Quinone)
CAS:Formula:C43H56N4O12Color and Shape:Dark Purple SolidMolecular weight:820.94Cefixime Impurity (7-AVCA)
CAS:Formula:C9H10N2O3SColor and Shape:Off-White SolidMolecular weight:226.25Polymyxin B3-d7 Pentatrifluoroacetate
Formula:C55H89D7N16O13·5C2HF3O2Molecular weight:1196.51 5*114.02Sulbactam EP Impurity C
CAS:Formula:C8H10BrNO5SColor and Shape:White To Off-White SolidMolecular weight:312.13Moxifloxacin Impurity 20 HCl
CAS:Formula:C21H25N3O4·HClColor and Shape:Pale Yellow SolidMolecular weight:383.45 36.46Ceftaroline Fosamil Acetate
CAS:Formula:C22H22N8O8PS4·C2H3O2Color and Shape:Pale Yellow SolidMolecular weight:685.70 59.05Sulbactam Impurity 1 (6-α-Bromopenicllanic Acid)
CAS:Formula:C8H10BrNO3SColor and Shape:Yellow LiquidMolecular weight:280.14Cefprozil EP Impurity M
CAS:Formula:C21H23N3O7SColor and Shape:Off-White SolidMolecular weight:461.49Cefazolin EP Impurity E
CAS:Formula:C3H4N2S2Color and Shape:White To Off-White SolidMolecular weight:132.21Cefpodoxime Proxetil EP Impurity C
CAS:Formula:C21H27N5O9S2Color and Shape:Pale Brown SolidMolecular weight:557.59Potassium Clavulanate
CAS:Formula:C8H8NO5·KColor and Shape:White To Off-White SolidMolecular weight:198.16 39.10Piperacillin EP Impurity F (Mixture of Diastereomers)
Formula:C25H31N5O9SColor and Shape:White To Off-White SolidMolecular weight:577.61Cefalexin (Cephalexin) EP Impurity E (Cefradine EP Impurity G, Cefadroxil EP Impurity H)
CAS:Formula:C13H18N2O4SColor and Shape:White To Off-White SolidMolecular weight:298.36Florfenicol-d3
CAS:Formula:C12H11D3Cl2FNO4SColor and Shape:White To Off-White SolidMolecular weight:361.24Clarithromycin EP Impurity H (Clarithromycin USP Impurity H)
CAS:Formula:C38H67NO14Color and Shape:White To Off-White SolidMolecular weight:761.95Linezolid Impurity 62
CAS:Formula:C14H16ClFN2O3Color and Shape:White To Off-White SolidMolecular weight:314.74Linezolid N-Oxide
CAS:Formula:C16H20FN3O5Color and Shape:White To Off-White SolidMolecular weight:353.35Cephalexin-d5
CAS:Formula:C16H12D5N3O4SColor and Shape:White To Off-White SolidMolecular weight:352.42Clarithromycin EP Impurity L
CAS:Formula:C38H70N2O13Color and Shape:White To Off-White SolidMolecular weight:762.98Cefotaxime EP Impurity F (Cefotaxime Dimer)
CAS:Formula:C30H30N10O12S4Color and Shape:Off-White SolidMolecular weight:850.87Erythromycin 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*114.02Posaconazole Impurity 46
CAS:Formula:C36H40F2N8O5Color and Shape:White To Off-White SolidMolecular weight:702.76Tiamulin EP Impurity N
Formula:C26H36O8Color and Shape:White To Off-White SolidMolecular weight:476.57Azithromycin EP Impurity A (Azathramycin, Desmethyl Azithromycin)
CAS:Formula:C37H70N2O12Color and Shape:White To Off-White SolidMolecular weight:734.97Paromomycin Trisulfate (Neomycin Sulfate EP Impurity E Trisulfate)
CAS:Formula:C23H45N5O14·3H2SO4Molecular weight:615.63 3*98.07Cefepime EP Impurity A DiHCl
CAS:Formula:C19H24N6O5S2·2HClColor and Shape:Off-White SolidMolecular weight:480.57 2*36.46Dirithromycin-13C-d3
CAS:Formula:CC41H75D3N2O14Color and Shape:White To Off-White SolidMolecular weight:839.10Gentamicin Sulfate EP Impurity E (2-Deoxystreptamine)
CAS:Formula:C6H14N2O3Color and Shape:White To Off-White SolidMolecular weight:162.19Ceftriaxone 3-ene Isomer Disodium Salt
Formula:C18H16N8O7S3·2NaColor and Shape:Yellow SolidMolecular weight:552.56 2*22.99Cycloserine Impurity 3 HCl
CAS:Formula:C4H8ClNO2·HClColor and Shape:White To Off-White SolidMolecular weight:137.57 36.46Cephalosporin C Sodium Salt
CAS:Formula:C16H20N3O8S·NaColor and Shape:White To Off-White SolidMolecular weight:414.42 22.99Lincomycin HCl (Clindamycin Phosphate EP Impurity A HCl)
CAS:Formula:C18H34N2O6S·HClMolecular weight:406.54 36.46Linezolid Dimer
CAS:Formula:C30H35F2N5O7Color and Shape:White To Off-White SolidMolecular weight:615.64Posaconazole Diastereoisomer 1 (R,R,R,R)
CAS:Formula:C37H42F2N8O4Color and Shape:White To Off-White SolidMolecular weight:700.79Cefpodoxime Proxetil EP Impurity D
CAS:Formula:C21H27N5O9S2Color and Shape:Off-White SolidMolecular weight:557.59Kanamycin A Related Compound 2
CAS:Formula:C12H25N3O7Color and Shape:Pale Brown SolidMolecular weight:323.35N-Methyl Gatifloxacin HCl
CAS:Formula:C20H24FN3O4·HClColor and Shape:Pale Yellow SolidMolecular weight:389.43 36.46Cefquinome Sulfate
CAS:Formula:C23H24N6O5S2·H2SO4Color and Shape:Off-White SolidMolecular weight:528.60 98.07Terbinafine EP Impurity B HCl (Terbinafine USP Related Compound B)
CAS:Formula:C21H25N·HClColor and Shape:Off-White SolidMolecular weight:291.44 36.46N-Nitroso Desmethyl Minocycline 2 Trifluoroacetate
Formula:C22H24N4O8·C2HF3O2Molecular weight:472.45 114.02Ascomycin (Tacrolimus EP Impurity A)
CAS:Formula:C43H69NO12Color and Shape:White To Off-White SolidMolecular weight:792.02Roxithromycin EP Impurity C (Erythromycin A 9-Oxime (E-Isomer))
CAS:Formula:C37H68N2O13Color and Shape:White To Off-White SolidMolecular weight:748.95Clavulanic Acid Impurity 7 DiHCl
CAS:Formula:C6H16N2·2HClColor and Shape:White To Off-White SolidMolecular weight:116.21 2*36.46Tedizolid Impurity 30
CAS:Formula:C16H13FN6O3Color and Shape:Pale Yellow SolidMolecular weight:356.32Spinosad (Mixture of Spinosyn A and Spinosyn D)
CAS:Formula:C41H65NO10·C42H67NO10Color and Shape:White To Off-White SolidMolecular weight:731.97 746.00N-Nitroso Desbutyl Lumefantrine (Mixture of Z and E Isomers)
Formula:C26H23Cl3N2O2Molecular weight:501.83Aztreonam Impurity 8
Formula:C13H17N5O8S2Color and Shape:White To Off-White SolidMolecular weight:435.43Besifloxacin HCl
CAS:Formula:C19H21ClFN3O3·HClColor and Shape:Pale Yellow SolidMolecular weight:393.84 36.46Cefminox Sodium Salt
CAS:Formula:C16H20N7O7S3·NaColor and Shape:Off-White SolidMolecular weight:518.57 22.99Clindamycin EP Impurity B
CAS:Formula:C17H31ClN2O5SColor and Shape:Pale Yellow SolidMolecular weight:410.95Neomycin Sulfate EP Impurity D TriHCl (Paromamine TriHCl)
CAS:Formula:C12H25N3O7·3HClMolecular weight:323.35 3*36.46Cefditoren Sodium Salt
CAS:Formula:C19H17N6O5S3·NaColor and Shape:Yellow SolidMolecular weight:505.56 22.99Ciprofloxacin-d8 HCl
CAS:Formula:C17H10D8FN3O3·HClColor and Shape:White To Off-White SolidMolecular weight:339.40 36.46Colistin B Pentatrifluoroacetate (Polymyxin E2 Pentatrifluoroacetate)
CAS:Formula:C52H98N16O13·5C2HF3O2Molecular weight:1155.46 5*114.02Posaconazole Impurity 48
CAS:Formula:C16H17N3O3Color and Shape:Pale Brown SolidMolecular weight:299.33
