
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 6341 products of "Natural and semi-synthetic antibiotics"
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Lomefloxacin Impurity 4 DiHCl
CAS:Formula:C17H19ClFN3O3·2HClColor and Shape:Off-White SolidMolecular weight:367.81 2*36.46Lomefloxacin Impurity 8 HCl
CAS:Formula:C15H18FN3O3·HClColor and Shape:White To Off-White SolidMolecular weight:307.33 36.46Linezolid Impurity PNU177636
Formula:C20H26FN3O5Color and Shape:White To Off-White SolidMolecular weight:407.44Cefminox Sodium Impurity 3
Formula:C16H21N7O7S3Color and Shape:White To Off-White SolidMolecular weight:519.57Linezolid Dimer
CAS:Formula:C30H35F2N5O7Color and Shape:White To Off-White SolidMolecular weight:615.64Moxifloxacin Impurity 41
CAS:Formula:C24H28FN3O6Color and Shape:Off-White SolidMolecular weight:473.50Terbinafine 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 46.03Dihydropenicillin 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 39.10Terbinafine EP Impurity B HCl (Terbinafine USP Related Compound B)
CAS:Formula:C21H25N·HClColor and Shape:Off-White SolidMolecular weight:291.44 36.46Moxifloxacin 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:442.57Cephalexin Impurity 1 HCl (D-Phenylglycine Methyl Ester HCl)
CAS:Formula:C9H11NO2·HClColor and Shape:White To Off-White SolidMolecular weight:165.19 36.46Rifaximin EP Impurity E (Rifamycin S)
CAS:Formula:C37H45NO12Color and Shape:Orange SolidMolecular weight:695.76Posaconazole Impurity 80
CAS:Formula:C21H20F2N4O3Color and Shape:Off-White SolidMolecular weight:414.42Cefotiam DiHCl
CAS:Formula:C18H23N9O4S3·2HClColor and Shape:Off-White SolidMolecular weight:525.63 2*36.46Polymyxin B2-d7 Pentatrifluoroacetate
Formula:C55H89D7N16O13·5C2HF3O2Molecular weight:1196.51 5*114.02Roxithromycin N-Oxide
CAS:Formula:C41H76N2O16Color and Shape:White To Off-White SolidMolecular weight:853.06Mupirocin 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*114.02Ciprofloxacin N-Oxide HCl
CAS:Formula:C17H18FN3O4·HClColor and Shape:White To Off-White SolidMolecular weight:347.35 36.46Amoxicillin EP Impurity H (Amoxicillin USP Related Compound H)
CAS:Formula:C13H17NO4Color and Shape:White To Off-White SolidMolecular weight:251.28Cefprozil EP Impurity H
Formula:C26H26N4O7SColor and Shape:White To Off-White SolidMolecular weight:538.58Cefadroxil EP Impurity D-d4 Trifluoroacetate (Cefadroxil-d4 (S-Isomer) Trifluoroacetate)
CAS:Formula:C16H13D4N3O5S·C2HF3O2Molecular weight:367.41 114.02Neamine Disulfate
CAS:Formula:C12H26N4O6·2H2SO4Color and Shape:Yellow SolidMolecular weight:322.36 2*98.07Aztreonam Impurity 6
Formula:C4H8N2O4SColor and Shape:White To Off-White SolidMolecular weight:180.18Cefixime EP Impurity A Disodium Salt (Mixture of Diastereomers)
CAS:Formula:C16H15N5O8S2·2NaMolecular weight:469.45 2*22.99Posaconazole Diastereoisomer Related Compound 5
CAS:Formula:C21H21F2N3O4SColor and Shape:White To Off-White SolidMolecular weight:449.48Ceftazidime EP Impurity A
CAS:Formula:C22H22N6O7S2Color and Shape:White To Off-White SolidMolecular weight:546.57Ampicillin EP Impurity M Disodium Salt (Ampicillin Dimer Disodium Salt)
Formula:C32H36N6O8S2·2NaColor and Shape:White To Off-White SolidMolecular weight:696.81 2*22.99Cefamandole Sodium Salt
CAS:Formula:C18H17N6O5S2·NaColor and Shape:White To Off-White SolidMolecular weight:461.49 22.99Meropenem-d6
CAS:Formula:C17H19D6N3O5SColor and Shape:White To Off-White SolidMolecular weight:389.50Cephalexin Impurity 6 (N-Ethoxycarbonyl-7-ADCA)
CAS:Formula:C11H14N2O5SColor and Shape:White To Off-White SolidMolecular weight:286.30Ertapenem Side Chain Enantiomer 1
Formula:C20H19N3O7SColor and Shape:White To Off-White SolidMolecular weight:445.45Posaconazole Impurity 66
CAS:Formula:C21H21F2N3O2Color and Shape:Pale Yellow OilMolecular weight:385.41rac-Amoxicillin EP Impurity H (rac-Amoxicillin USP Related Compound H)
CAS:Formula:C13H17NO4Color and Shape:White To Off-White SolidMolecular weight:251.28Clindamycin Impurity 25 (Sulfone)
CAS:Formula:C18H33ClN2O7SColor and Shape:White To Off-White SolidMolecular weight:456.98Moxifloxacin Impurity 3 HCl
Formula:C21H24FN3O4·HClColor and Shape:Pale Yellow SolidMolecular weight:401.44 36.46Cefazolin EP Impurity L
Formula:C14H14N8O4S3Color and Shape:White To Off-White SolidMolecular weight:454.51Maduramycin Ammonium
CAS:Formula:C47H80O17·H3NColor and Shape:White To Off-White SolidMolecular weight:917.15 17.03Cefepime 7-Epimer Iodide
Formula:C19H25N6O5S2·IColor and Shape:Yellow SolidMolecular weight:481.58 126.90Ceftizoxime Impurity 11
Formula:C8H10N4O3SC8H12N4O4SColor and Shape:Yellow SolidMolecular weight:242.26 260.27Lomefloxacin HCl
CAS:Formula:C17H19F2N3O3·HClColor and Shape:White To Off-White SolidMolecular weight:351.35 36.46Flucloxacillin Impurity 4
CAS:Formula:C13H10ClFN2O4Color and Shape:White To Off-White SolidMolecular weight:312.68Spiramycin Adipate
CAS:Formula:C43H74N2O14C46H78N2O15·C6H10O4Color and Shape:Off-White SolidMolecular weight:843.07 (I form) 899.13 (III form) 146.14Cefadroxil Impurity 5
Formula:C24H24N4O7SColor and Shape:White To Off-White SolidMolecular weight:512.54Tedizolid Impurity 17
CAS:Formula:C6H4BrN5Color and Shape:White To Off-White SolidMolecular weight:226.04Besifloxacin Impurity B
CAS:Formula:C13H8ClF2NO3Color and Shape:Pale Yellow SolidMolecular weight:299.66Cilastatin sodium
CAS:<p>Cilastatin is a renal dehydropeptidase-I and leukotriene D4 dipeptidase inhibitor.</p>Formula:C16H26N2NaO5SColor and Shape:A White Colour PowderMolecular weight:381.44Amikacin hydrate
CAS:<p>Amikacin hydrate (BAY 41-6551 hydrate) is an aminoglycoside antibiotic with bacteriostatic properties.</p>Formula:C22H43N5O13·xH2OPurity:99.98%Color and Shape:SolidMolecular weight:603.62Cefodizime
CAS:<p>Cefodizime: a new, well-tolerated cephalosporin antibiotic with immunomodulatory properties for serious respiratory and urinary infections.</p>Formula:C20H20N6O7S4Purity:99.62%Color and Shape:SolidMolecular weight:584.67Temocillin disodium
CAS:<p>Temocillin disodium (BRL 17421 disodium) is a carbapenem antibiotic with antimicrobial activity and can be used to study urinary tract infections.</p>Formula:C16H16N2Na2O7S2Purity:92.30%Color and Shape:SolidMolecular weight:458.42Cefepime dihydrochloride
CAS:<p>Cefepime dihydrochloride: fourth-gen cephalosporin, inhibits bacterial PBPs.</p>Formula:C19H26Cl2N6O5S2Color and Shape:SolidMolecular weight:553.48Cefaclor
CAS:<p>Cefaclor (Panoral) is a cephalosporin antibiotic.</p>Formula:C15H14ClN3O4SPurity:99.03% - 99.98%Color and Shape:SolidMolecular weight:367.81Cefoxitin
CAS:<p>Cefoxitin, an oral 2nd-gen cephalosporin antibiotic, combats Gram+/- & anaerobes, for abdominal and gynecological infections.</p>Formula:C16H17N3O7S2Purity:99.8% - 99.89%Color and Shape:SolidMolecular weight:427.45Cefprozil
CAS:<p>Cefprozil (Cefzil) is a novel cephalosporin antibiotic with antiviral activity for the study of immune system disorders.</p>Formula:C18H19N3O5SPurity:98.1%Color and Shape:White To Yellow Crystalline PowderMolecular weight:389.43Pivampicillin
CAS:<p>Pivampicillin, a pivalate ester analog of Ampicillin, is used to treat chronic obstructive pulmonary disease (COPD) in children and young adults.</p>Formula:C22H29N3O6SPurity:98%Color and Shape:SolidMolecular weight:463.55(2S,5R,6R)-3,3-Dimethyl-7-oxo-6-[[2-(4-hydroxyphenoxy)acetyl]amino]-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic Acid (4-Hydroxyphenoxymethylpenicillin)
CAS:Formula:C16H18N2O6SColor and Shape:NeatMolecular weight:366.39Phenoxymethylpenicillin Potassium
CAS:Controlled ProductFormula:C16H17N2O5S·KColor and Shape:White To Off-WhiteMolecular weight:388.48Cefixime trihydrate
CAS:<p>Cefixime trihydrate, a third-gen cephalosporin antibiotic, treats bacterial infections.</p>Formula:C16H17N5O8S2Color and Shape:SolidMolecular weight:471.46Fleroxacin
CAS:Controlled ProductFormula:C17H18F3N3O3Color and Shape:White To Off-WhiteMolecular weight:369.34Chloramphenicol EP Impurity A
CAS:Controlled ProductFormula:C9H12N2O4Color and Shape:NeatMolecular weight:212.20Cefditoren sodium
CAS:<p>Cefditoren sodium: cephalosporin antibiotic for bacterial infections; alters Mrp2, Bcrp, Oat2, P-gp, Oct1 mRNA levels.</p>Formula:C19H18N6NaO5S3Color and Shape:SolidMolecular weight:529.57(2RS,4S)-5,5-Dimethyl-2-[[(phenoxyacetyl)amino]methyl]thiazolidine-4-carboxylic Acid (Penilloic Acids of Phenoxymethylpenicillin)
CAS:Controlled ProductFormula:C15H20N2O4SColor and Shape:NeatMolecular weight:324.40(3R,5R)-7-[(1S,2S,6R,8S,8aR)-2,6-Dimethyl-8-[[(2S)-2-methylbutanoyl]oxy]-1,2,6,7,8,8a-hexahydronaphthalen-1-yl]-3,5-dihydroxyheptanoic Acid Sodium Salt (Lovastatin Hydroxy Acid Sodium Salt)
CAS:Controlled ProductFormula:C24H37O6·NaColor and Shape:NeatMolecular weight:444.542-[[(5S)-3-[3-Fluoro-4-(4-morpholinyl)phenyl]-2-oxo-5-oxazolidinyl]methyl]-1H-isoindole-1,3(2H)-dione
CAS:Controlled ProductFormula:C22H20FN3O5Color and Shape:NeatMolecular weight:425.41Benzyl 3-Fluoro-4-(4-morpholinyl)phenylcarbamate
CAS:Controlled ProductFormula:C18H19FN2O3Color and Shape:NeatMolecular weight:330.35Enrofloxacin N-Oxide Hydrochloride
CAS:Controlled ProductFormula:C19H22FN3O4·ClHColor and Shape:NeatMolecular weight:411.86Cefaclor Monohydrate
CAS:Controlled ProductFormula:C15H14ClN3O4S·H2OColor and Shape:NeatMolecular weight:385.82(5S)-5-[[(1,1-Dimethylethyl)amino]methyl]-3-[3-fluoro-4-(4-morpholinyl)phenyl]-2-oxazolidinone
CAS:Color and Shape:Neat(S)-N-[[3-(3-Fluoro-4-morpholinophenyl)-2-oxooxazolidin-5-yl]methyl]thioacetamide
CAS:Color and Shape:NeatN-(3-Phthalimido-2-(R)-hydroxypropyl)-3-fluoro-4-(4-morpholinyl)aniline
CAS:Color and Shape:Orange To Dark Orange(5R)-[3-[3-Fluoro-4-(4-morpholinyl)phenyl]-2-oxo-5-oxazolidinyl]methyl Acetate
CAS:Color and Shape:Neat1-Cyclopropyl-7-(4-ethylpiperazin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic Acid Hydrochloride (Desfluoroenrofloxacin Hydrochloride)
CAS:Controlled ProductFormula:C19H23N3O3·ClHColor and Shape:NeatMolecular weight:377.87Phenoxymethylpenicillin EP Impurity B
CAS:Controlled ProductFormula:C8H8O3Color and Shape:NeatMolecular weight:152.15Avibactam free acid
CAS:<p>Avibactam free acid is a potent β-lactamase inhibitor exhibiting covalent and reversible properties, capable of inhibiting TEM-1, P99, and CTX-M-15.</p>Formula:C7H11N3O6SPurity:99.17%Color and Shape:SolidMolecular weight:265.24Cefacetrile
CAS:<p>Cefacetrile (Cephacetrile) is a cephalosporin antibiotic with antimicrobial activity for the study of Gramnegative infections.</p>Formula:C13H13N3O6SPurity:98.38% - 98.38%Color and Shape:SolidMolecular weight:339.32Chloramphenicol
CAS:Controlled ProductFormula:C11H12Cl2N2O5Color and Shape:NeatMolecular weight:323.13Spectinomycin
CAS:<p>Spectinomycin, a broad-spectrum antibiotic, halts protein synthesis in various bacteria by targeting ribosomes.</p>Formula:C14H24N2O7Color and Shape:SolidMolecular weight:332.35Tazobactam Diphenylmethyl Ester
CAS:Controlled ProductFormula:C23H22N4O5SColor and Shape:NeatMolecular weight:466.51Cefepime
CAS:<p>Cefepime (BMY-28142) is a cephalosporin antibiotic with antimicrobial activity that induces neurotoxicity and can be used in the study of anaerobic bacteria.</p>Formula:C19H24N6O5S2Purity:99.47%Color and Shape:White Or Almost White Crystalline PowderMolecular weight:480.56Gatifloxacin sesquihydrate
CAS:<p>Gatifloxacin sesquihydrate, a bacterial DNA gyrase inhibitor, is used to treat tuberculosis and pneumonia.</p>Formula:C19H24FN3O5Color and Shape:SolidMolecular weight:393.41N-[(2S)-3-Amino-2-hydroxypropyl]-N-(3-fluoro-4-morpholinophenyl)acetamide Hydrochloride
CAS:Color and Shape:White6-Demethylazithromycin (Azaerythromycin A)
CAS:Controlled ProductFormula:C37H70N2O12Color and Shape:Off White SolidMolecular weight:734.96Anti-Eribulin Antibody (8T987)
<p>Anti-Eribulin Antibody (8T987) is an antibody targeting Eribulin. Anti-Eribulin Antibody (8T987) can be used in ELISA.</p>Color and Shape:Odour Liquid(5R)-[3-(3-Fluoro-4-morpholinophenyl)-2-oxooxazolidin-5-yl]methyl Methanesulfonate
CAS:Color and Shape:NeatLinezolid N-Oxide
CAS:Controlled ProductFormula:C16H20FN3O5Color and Shape:NeatMolecular weight:353.354-Methylpyridin-2-amine
CAS:Controlled ProductFormula:C6H8N2Color and Shape:NeatMolecular weight:108.14Lasalocid
CAS:<p>Lasalocid (Lasalocid-A) is an ion carrier antibiotic produced by Streptomyces, which has antimicrobial and parasitic properties and is often added to feed.</p>Formula:C34H54O8Purity:98.50% - 99.37%Color and Shape:SolidMolecular weight:590.79(4S)-2-[Carboxy[(phenoxy-acetyl)amino]methyl]-5,5-dimethylthiazolidine-4-carboxylic Acid (Penicilloic Acids of Phenoxymethylpenicillin)
CAS:Controlled ProductFormula:C16H20N2O6SColor and Shape:NeatMolecular weight:368.40(2R,6R,7R)- and (2S,6R,7R)-7-[[(2R)-2-Amino-2-phenylacetyl]amino]-3-chloro-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-3-ene-2-carboxylic Acid (δ-3-Cefaclor)
CAS:Controlled ProductFormula:C15H14ClN3O4SColor and Shape:NeatMolecular weight:367.81(5R)-5-(Chloromethyl)-3-[3-fluoro-4-(4-morpholinyl)phenyl]-2-oxazolidinone
CAS:Controlled ProductFormula:C14H16ClFN2O3Color and Shape:NeatMolecular weight:314.745-Dehydroxyl-5-oxodoramectin
CAS:Controlled ProductFormula:C50H72O14Color and Shape:NeatMolecular weight:897.10Ceftolozane
CAS:<p>Ceftolozane (FR-264,205 or CXA-101) is a cephalosporin antibiotic for drug-resistant gram-negative and gram-positive infections, used with tazobactam.</p>Formula:C23H30N12O8S2Color and Shape:SolidMolecular weight:666.69Kanamycin
CAS:<p>Kanamycin (Kanamycin A) is an aminoglycoside antibiotic with antibacterial activity, used in research on tuberculosis and pneumonia.</p>Purity:99.86% - 99.91%Color and Shape:Soild(S)-5-(Aminomethyl)-3-(3-fluoro-4-morpholinophenyl)oxazolidin-2-one (Desacetyllinezolid)
CAS:Color and Shape:Neat(5R)-3-(3-Fluoro-4-morpholinophenyl)-5-(hydroxymethyl)oxazolidin-2-one
CAS:Controlled ProductFormula:C14H17FN2O4Color and Shape:Off White SolidMolecular weight:296.30Lincomycin
CAS:<p>Lincomycin (U-10149) is a antibiotic against most susceptible gram-positive and cell wall-less bacteria .</p>Formula:C18H34N2O6SPurity:99.77%Color and Shape:Amorphous Solid SolidMolecular weight:406.54




