CymitQuimica logo
Natural and semi-synthetic antibiotics

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.

Products of "Natural and semi-synthetic antibiotics"

Sort by

products per page.Found 5671 products on this category.
  • Ertapenem Impurity 40 HCl


    Formula:C12H14N2O3S·HCl
    Molecular weight:266.32 36.46

    Ref: 4Z-E-071057

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Cefotiam Impurity 31


    Formula:C36H44N18O7S6
    Molecular weight:1033.23

    Ref: 4Z-C-10336

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Tacrolimus Impurity 17

    CAS:
    Formula:C56H99NO14Si2
    Molecular weight:1066.57

    Ref: 4Z-T-3933

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Ceftizoxime Impurity 33


    Formula:C10H15N3O3S
    Molecular weight:257.31

    Ref: 4Z-C-9036

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Teicoplanin A2 Related Compound 1


    Formula:C86H93Cl2N9O33
    Molecular weight:1851.62

    Ref: 4Z-T-199007

    5mg
    Discontinued
    10mg
    Discontinued
    25mg
    Discontinued
    50mg
    Discontinued
    100mg
    Discontinued
    Discontinued product
  • Cilastatin Impurity 25


    Formula:C15H25NO4
    Molecular weight:283.37

    Ref: 4Z-C-136040

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Ref: 4Z-PC-155005

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Ceftizoxime

    CAS:
    Formula:C13H13N5O5S2
    Molecular weight:383.41

    Ref: 4Z-C-901

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Cefditoren Impurity 17

    CAS:
    Formula:C25H28N6O7S3
    Color and Shape:Yellow Solid
    Molecular weight:620.71

    Ref: 4Z-C-7623

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Cefotiam Impurity 21


    Formula:C18H23N9O4S3
    Molecular weight:525.62

    Ref: 4Z-C-10326

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Cephalexin Impurity 4


    Formula:C16H18N2O4S
    Molecular weight:334.40

    Ref: 4Z-C-4722

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Desbutyl Lumefantrine HCl

    CAS:
    Formula:C26H24Cl3NO·HCl
    Color and Shape:Yellow Solid
    Molecular weight:472.83 36.46

    Ref: 4Z-L-2923

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Kanamycin

    CAS:
    Kanamycin (Kanamycin A) is an aminoglycoside antibiotic with antibacterial activity, used in research on tuberculosis and pneumonia.
    Purity:99.91%
    Color and Shape:Soild

    Ref: TM-T64922

    100mg
    38.00€
    500mg
    72.00€
  • Cefminox Sodium Impurity 18


    Formula:C16H21N3O9S2
    Molecular weight:463.48

    Ref: 4Z-C-167019

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Benzylpenicillin CP Impurity I

    CAS:
    Formula:C16H18N2O4S
    Molecular weight:334.40

    Ref: 4Z-P-0420

    5mg
    1,877.00€
    10mg
    3,107.00€
    25mg
    5,696.00€
    50mg
    9,450.00€
    100mg
    15,534.00€
  • Phenoxymethylpenicillin EP Impurity E

    CAS:
    Formula:C16H20N2O6S
    Color and Shape:White To Off-White Solid
    Molecular weight:368.40

    Ref: 4Z-P-872

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Erythromycin Impurity 9 (Cycloester Erythromycin Enol Ether)

    CAS:
    Formula:C38H63NO13
    Color and Shape:White To Off-White Solid
    Molecular weight:741.92

    Ref: 4Z-E-2045

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Amifloxacin

    CAS:
    Amifloxacin (Win49375) is a synthetic antibacterial compound and showed moderate activity against Staphylococcus aureus, with MICs of less than or equal to 2
    Formula:C16H19FN4O3
    Purity:98.1%
    Color and Shape:Solid
    Molecular weight:334.35

    Ref: TM-T17254

    1mg
    120.00€
    5mg
    283.00€
    10mg
    472.00€
    25mg
    753.00€
    50mg
    1,017.00€
    1mL*10mM (DMSO)
    662.00€
  • Piperacillin Impurity 3


    Formula:C46H56N10O15S2
    Molecular weight:1053.15

    Ref: 4Z-P-7416

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Cilastatin Impurity 27


    Formula:C16H26N2O5S
    Molecular weight:358.45

    Ref: 4Z-C-136042

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Cephapirin

    CAS:
    Formula:C17H17N3O6S2
    Molecular weight:423.47

    Ref: 4Z-C-182001

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • (5R)-3-(3-Fluoro-4-morpholinophenyl)-5-(hydroxymethyl)oxazolidin-2-one

    Controlled Product
    CAS:
    Formula:C14H17FN2O4
    Color and Shape:Neat
    Molecular weight:296.30

    Ref: 86-MM3300.05

    25mg
    1,116.00€
    100mg
    1,716.00€
  • N-Nitroso Streptomycin


    Formula:C21H38N8O13
    Molecular weight:610.58

    Ref: 4Z-S-083010

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Azithromycin Impurity 3

    CAS:
    Formula:C38H74N2O13
    Color and Shape:White To Off-White Solid
    Molecular weight:767.01

    Ref: 4Z-A-2624

    5mg
    817.00€
    10mg
    1,302.00€
    25mg
    2,344.00€
    50mg
    3,645.00€
    100mg
    5,988.00€
  • Posaconazole Impurity 2


    Formula:C36H42N8O4
    Molecular weight:650.79

    Ref: 4Z-P-389

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Dirithromycin-13C-d3

    CAS:
    Formula:CC41H75D3N2O14
    Color and Shape:White To Off-White Solid
    Molecular weight:839.10

    Ref: 4Z-D-106002

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Naransin Sodium

    CAS:
    Formula:C43H71O11·Na
    Molecular weight:764.03 22.99

    Ref: 4Z-N-109001

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Ertapenem Impurity 6


    Formula:C44H50N6O14S2
    Molecular weight:951.032

    Ref: 4Z-E-071023

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Capreomycin Impurity B


    Formula:C25H44N14O7
    Molecular weight:652.72

    Ref: 4Z-C-194007

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Tedizolid Impurity 3


    Formula:C20H22FN6O8P
    Molecular weight:524.41

    Ref: 4Z-T-163004

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • D-Penicillamine-d3

    CAS:
    Formula:C5H8D3NO2S
    Color and Shape:White To Off-White Solid
    Molecular weight:152.23

    Ref: 4Z-P-892

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Faropenem Impurity 43 Sodium Salt


    Formula:C18H30N2O5SSi·Na
    Molecular weight:414.59 22.99

    Ref: 4Z-F-087058

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Tigecycline-d9

    CAS:
    Formula:C29H30D9N5O8
    Color and Shape:Orange Solid
    Molecular weight:594.71

    Ref: 4Z-T-109017

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • (S)-5-((tert-Butylamino)methyl)-3-(3-fluoro-(4-morpholinyl)phenyl)oxazolidin-2-one

    CAS:
    (S)-5-((tert-Butylamino)methyl)-3-(3-fluoro-(4-morpholinyl)phenyl)oxazolidin-2-one is a drug product with CAS No. 1215006-08-8, which is a metabolite of Fluoxetine. It is an impurity standard for Fluoxetine and has been used as a reference compound in metabolism studies. (S)-5-((tert-Butylamino)methyl)-3-(3-fluoro-(4-morpholinyl)phenyl)oxazolidin-2-one is also an analytical reagent that can be used to calibrate HPLC systems.
    Formula:C18H26FN3O3
    Purity:Min. 95%
    Color and Shape:White To Off-White Solid
    Molecular weight:351.42 g/mol

    Ref: 3D-IT58048

    10mg
    140.00€
    25mg
    185.00€
    50mg
    265.00€
  • Ceftizoxime Impurity 37


    Formula:C26H28N10O11S4
    Molecular weight:784.81

    Ref: 4Z-C-9040

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Lasalocid

    CAS:
    Lasalocid (Lasalocid-A) is an ion carrier antibiotic produced by Streptomyces, which has antimicrobial and parasitic properties and is often added to feed.
    Formula:C34H54O8
    Purity:98.06% - 99.35%
    Color and Shape:Solid
    Molecular weight:590.79

    Ref: TM-T15717

    2mg
    35.00€
    1mL*10mM (DMSO)
    47.00€
  • Posaconazole Impurity 70

    CAS:
    Formula:C11H14N2O2
    Molecular weight:206.25

    Ref: 4Z-P-38106

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Latamoxef Impurity 73


    Formula:C30H32O8
    Molecular weight:520.58

    Ref: 4Z-L-102074

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Tazobactam Acid Impurity 44

    CAS:
    Formula:C15H15N5O5S
    Molecular weight:377.38

    Ref: 4Z-T-127053

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Oxytetracycline EP Impurity D (α-Apo-Oxytetracycline)

    CAS:
    Formula:C22H22N2O8
    Molecular weight:442.42

    Ref: 4Z-O-168

    5mg
    1,945.00€
    10mg
    3,253.00€
    25mg
    5,963.00€
    50mg
    9,894.00€
    100mg
    16,263.00€
  • rac-Bacitracin Impurity 7

    CAS:
    Formula:C9H11NO3S
    Molecular weight:213.25

    Ref: 4Z-PB-073035

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Tazobactam Acid Impurity 1


    Formula:C10H8N4O9S
    Molecular weight:360.25

    Ref: 4Z-T-127009

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Cefadroxil Impurity 2

    CAS:
    Formula:C9H11NO3
    Color and Shape:White To Off-White Solid
    Molecular weight:181.19

    Ref: 4Z-C-135013

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • N-Nitroso Pipecolic Acid

    CAS:
    Formula:C6H10N2O3
    Molecular weight:158.16

    Ref: 4Z-P-246010

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Cefotaxime Impurity 4

    CAS:
    Formula:C16H16N5O7S2
    Color and Shape:White To Off-White Solid
    Molecular weight:455.46

    Ref: 4Z-C-106017

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Ceftibuten Impurity 7

    CAS:
    Formula:C7H8N2O3S
    Molecular weight:200.22

    Ref: 4Z-C-1098

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Clarithromycin Impurity 14 (Mixture of Z and E Isomers)


    Formula:C49H94N2O13Si2
    Molecular weight:975.46

    Ref: 4Z-C-3736

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Minocycline-13C-d3

    CAS:
    Formula:C23H24N3O7D3
    Molecular weight:461.49

    Ref: 4Z-M-342

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Cefalexin Impurity 1

    CAS:
    Formula:C11H11N3O2
    Color and Shape:Gray Solid
    Molecular weight:217.23

    Ref: 4Z-C-137001

    5mg
    To inquire
    10mg
    To inquire
    25mg
    To inquire
    50mg
    To inquire
    100mg
    To inquire
  • Benzylpenicillin Impurity 1


    Formula:C18H25N3O6S
    Molecular weight:411.47

    Ref: 4Z-P-0427

    5mg
    1,400.00€
    10mg
    2,344.00€
    25mg
    4,296.00€
    50mg
    7,160.00€
    100mg
    11,716.00€