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"
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Piperacillin EP Impurity C (Mixture of Diastereomers)
CAS:Formula:C22H29N5O6SColor and Shape:White To Off-White SolidMolecular weight:491.56Erythromycin A 9,11-Imino Ether
CAS:Controlled ProductFormula:C37H66N2O12Color and Shape:NeatMolecular weight:730.93Fleroxacin
CAS:Fleroxacin (RO 23-6240) is a broad-spectrum antimicrobial fluoroquinolone. It strongly inhibits the DNA-supercoiling activity of DNA gyrase.Formula:C17H18F3N3O3Purity:99.58% - 99.79%Color and Shape:White Needle-Like CrystalsMolecular weight:369.34Cefixime EP Impurity D
CAS:Formula:C16H15N5O7S2Color and Shape:White To Off-White SolidMolecular weight:453.44(Z)-2-(2-Aminothiazol-4-yl)-2-(hydroxyimino)-N-{[(2RS,5RS)-5-methyl-7-oxo-2,4,5,7-tetrahydro-1H-furo[3,4-d][1,3]thiazin-2-yl]methyl} acetamide dihydrochloride - >80%, Mixture of Diastereomers
(Z)-2-(2-Aminothiazol-4-yl)-2-(hydroxyimino)-N-[(2RS,5RS)-5-methyl-7-oxo-2,4,5,7-tetrahydro-1H-furo[3,4-d][1,3]thiazin-2-yl]methyl} acetamide dihydrochloride is a drug product with purity of >80%. It is a mixture of diastereomers. The impurities are not detected by HPLC. This compound is used in the development of drugs. Its metabolite is also available to purchase.Formula:C13H15N5O4S2·2HClPurity:Min. 95%Molecular weight:442.34 g/molAmpicillin EP Impurity G
CAS:Formula:C16H14N2O2Color and Shape:White To Off-White SolidMolecular weight:266.30Ceftizoxime Impurity 10 HCl
CAS:Formula:C9H11NO3·HClColor and Shape:White To Off-White SolidMolecular weight:181.19 36.46Tetramycin
CAS:Tetramycin (Tetramycin A) is a macrolide antibiotic isolated from Streptomyces hygrospinosus var. Beijingensis, a new and highly effective polyene antibiotic.Formula:C35H53NO13Purity:95.28%Color and Shape:SolidMolecular weight:695.79Cefditoren Sodium Salt
CAS:Formula:C19H17N6O5S3·NaColor and Shape:Yellow SolidMolecular weight:505.56 22.99Cefmetazole Lactone (~90%)
CAS:Controlled ProductApplications Cefmetazole Lactone is an impurity of cefmetazole (C242850), which is a semi-synthetic antibiotic derived from Cephamycin. Antibacterial. References Nakao, H., et al.: J. Antibiot., 29, 554 (1976), Iwata, M., et al.: Jpn. J. Exp. Med., 48, 401 (1978), Shindo, H., et al.: Chemoterapy, 27, 64 (1979), Nishida, M., et al.: J. Antibiot., 32, 1319 (1979),Formula:C13H13N3O5S2Purity:~90%Color and Shape:NeatMolecular weight:355.39Cefoxitin
CAS:Antibiotics nesoiFormula:C16H17N3O7S2Color and Shape:White Off-White Crystalline PowderMolecular weight:427.05079Erythromycin EP Impurity J (Pseudoerythromycin A Hemiketal) (1S-Isomer)
CAS:Formula:C37H67NO13Color and Shape:Off-White SolidMolecular weight:733.94Ref: 4Z-T-199011
Discontinued productCeftolozane
CAS:Ceftolozane (FR-264,205 or CXA-101) is a cephalosporin antibiotic for drug-resistant gram-negative and gram-positive infections, used with tazobactam.Formula:C23H30N12O8S2Color and Shape:SolidMolecular weight:666.69Cefotaxime EP Impurity E (Ceftriaxone EP Impurity B)
CAS:Formula:C14H13N5O5S2Color and Shape:Off-White SolidMolecular weight:395.41Tiamulin EP Impurity L
CAS:Formula:C29H40O7SColor and Shape:White To Off-White SolidMolecular weight:532.69Ref: 4Z-E-110012
Discontinued productSpiramycin I (contains 6% Spiramycin III)
CAS:Applications Antibiotic substance classified in the erythromycin-carbomycin group. References Sous, H., et al.: Arzneim.-Forsch., 8, 386 (1958), Mitscher, et al.: J. Antibiot., 26, 55 (1973)Formula:C43H74N2O14Color and Shape:White To Off-WhiteMolecular weight:843.05Rifamycin Impurity 11 (25-O-deacetyl-21-O-acetyl Rifamycin S)
CAS:Formula:C37H45NO12Molecular weight:695.76Temsirolimus
CAS:Temsirolimus (CCI-779) is a specific mTOR inhibitor ( IC50: 1.76 μM), used in the treatment of advanced renal cell cancer.Formula:C56H87NO16Purity:100% - 99.64%Color and Shape:White Crystalline PowderMolecular weight:1030.29Cefazolin EP Impurity K (Cefazolinamide)
CAS:Formula:C14H15N9O3S3Color and Shape:Off-White SolidMolecular weight:453.51Potassium Clavulanate EP Impurity A
CAS:Formula:C8H12N2O2Color and Shape:Off-White SolidMolecular weight:168.20Demeclocycline HCl
CAS:Formula:C21H21ClN2O8·HClColor and Shape:Yellow SolidMolecular weight:464.86 36.46L-Piperacillin
Please enquire for more information about L-Piperacillin including the price, delivery time and more detailed product information at the technical inquiry form on this pageFormula:C23H27N5O7SPurity:Min. 95%Molecular weight:517.56 g/molEndotoxin (11,000 USP Endotoxin Units)
Human blood; animal blood prepared for therapeutic, prophylatic or diagnostic uses; antisera and other blood fractions, etc. nesoiColor and Shape:White Lyophilized CakeGriseofulvin-13C-d3
CAS:Formula:C1613CH14D3ClO6Color and Shape:White To Off-White SolidMolecular weight:356.78Enrofloxacin N-Oxide Hydrochloride
CAS:Controlled ProductFormula:C19H22FN3O4·ClHColor and Shape:NeatMolecular weight:411.86Erythromycin Stearate
CAS:Erythromycin and its derivatives; salts thereofFormula:C37H67NO13·C18H36O2Color and Shape:PowderMolecular weight:1018.59 g/molPotassium Clavulanate EP Impurity J
CAS:Formula:C6H16N2Color and Shape:Colourless LiquidMolecular weight:116.21Cefotaxime EP Impurity B
CAS:Formula:C14H15N5O6S2Color and Shape:Pale Yellow SolidMolecular weight:413.42N-((-3-(3-Fluoro-4-(4-morpholinyl)phenyl)-2-oxo-5-oxazolidinyl)methyl) acetamide
CAS:N-((-3-(3-Fluoro-4-(4-morpholinyl)phenyl)-2-oxo-5-oxazolidinyl)methyl) acetamide is a custom synthesis, drug product, niche, Metabolite, Drug Development, CAS No. 224323-50-6. It is a natural compound and has pharmacopoeia and API impurity. It is an analytical standard for HPLC and research and development. It is a high purity synthetic with impurity standard.Formula:C16H20FN3O4Purity:Min. 95%Color and Shape:PowderMolecular weight:337.35 g/molAmpicillin Trihydrate
CAS:Ampicillin Trihydrate (NCI-C56086), a broad-spectrum semisynthetic derivative of aminopenicillin, is a β-lactam antibiotic.Formula:C16H19N3O4S·3H2OPurity:98.40% - 99.95%Color and Shape:White Solid PowderMolecular weight:403.45Cefixime EP Impurity A (Technical Grade)(Mixture of Diastereomers)
CAS:Controlled ProductImpurity Cefixime EP Impurity A Stability Light Sensitive, Temperature Sensitive Applications Cefixime Impurity is an impurity of Cefixime (C242800); an orally active third generation cephalosporin antibiotic. References Kamimura, T., et al.: Antimicrob. Agents Chemother., 25, 98 (1984); Yamanaka, H., et al.: J. Antibiot., 38, 1738 (1985); Guay, D.R.P., et al.: Antimicrob. Agents Chemother., 30, 485 (1986)Formula:C16H17N5O8S2Color and Shape:NeatMolecular weight:471.46Amoxicillin EP Impurity G (Amoxicillin USP Related Compound G)
CAS:Formula:C24H26N4O7SColor and Shape:White To Off-White SolidMolecular weight:514.55Amoxicillin Dimer tri-Sodium Salt (penicilloic acid form)(Mixture of Diastereomers)
CAS:Controlled ProductStability Hygroscopic Applications Amoxicillin dimer tri-Sodium Salt (penicilloic acid form) is an impurity of Amoxicillin (A634235), a β-lactam family antibiotic that is commonly used in conjunction with clavulanic acid (C56370) to the treat bacterial infections. References Gurwith, M., et al.: Antimicrob. Agents Ch., 24, 716 (1983); Kumar, A., et al.: J. Mater. Chem., 20, 10152 (2010);Formula:C32H37N6Na3O11S2Color and Shape:NeatMolecular weight:814.77Tiamulin EP Impurity T Fumarate
Formula:C30H51NO4S2·C4H4O4Color and Shape:Pale Grey SolidMolecular weight:553.87 116.07Lumefantrine
CAS:Lumefantrine, an antimalarial, treats malaria with artemether, effective against Plasmodium spp. including in chloroquine-resistant areas.Formula:C30H32Cl3NOPurity:98.36%Color and Shape:Yellow SolidMolecular weight:528.94piperacillin
CAS:Piperacillin (Pipercillin) is a semisynthetic penicillin with wide spectrum of antimicrobial activity(particularly pseudomonas strains)Formula:C23H27N5O7SPurity:98.32% - 98.51%Color and Shape:SolidMolecular weight:517.55Griseofulvin
CAS:Griseofulvin (Fulvicin) is an antifungal agent used in the treatment of TINEA infections.Formula:C17H17ClO6Purity:95.83% - 98.12%Color and Shape:Stout Octahedra Or Rhombs From BenzeneMolecular weight:352.77Chloramphenicol EP Impurity A
CAS:Formula:C9H12N2O4Color and Shape:Off-White SolidMolecular weight:212.21Desethylene Ciprofloxacin hydrochloride
CAS:Desethylene ciprofloxacin hydrochloride is a metabolite of ciprofloxacin that is converted to the active form of the drug. Desethylene ciprofloxacin hydrochloride has a concentration-response relationship, which can be used for in vitro testing of pharmaceutical preparations. The chromatographic evaluation of this metabolite can be used to identify the presence of antibiotics in environmental samples. Desethylene ciprofloxacin hydrochloride is also a substrate for carbonyl reductase and piperazine, which are enzymes that produce an activated form of the metabolite.Formula:C15H16FN3O3·HClPurity:Min. 95%Color and Shape:Off-White Yellow PowderMolecular weight:341.77 g/molCefixime EP Impurity B (Mixture of Diastereomers)
Formula:C15H17N5O6S2Color and Shape:Pale Yellow SolidMolecular weight:427.45Azithromycin EP Impurity H (Azithromycin USP Related Compound H)
CAS:Formula:C45H77N3O15SColor and Shape:White To Off-White SolidMolecular weight:932.19Cefteram
CAS:Cefteram (T-2525), an orally active ester of the cephalosporin class, is the free acid form of Cefteram pivoxil.Formula:C16H17N9O5S2Color and Shape:SolidMolecular weight:479.49Viomycin
CAS:Viomycin: tuberactinomycin antibiotic, halts prokaryotic protein synthesis and group I intron splicing, arrests bacterial ribosomes.Formula:C25H43N13O10Purity:98%Color and Shape:SolidMolecular weight:685.69Sultamicillin Tosylate
CAS:Sultamicillin Tosylate (Unacim orale) is an oral form of the antibiotic combination (codrug or mutual prodrug) ampicillin/sulbactam.Formula:C32H38N4O12S3Purity:98.22%Color and Shape:White To Off-White Crystalline PowderMolecular weight:766.86Lovastatin EP Impurity D (Lovastatin Dimer)
Formula:C48H72O10Color and Shape:White To Off-White SolidMolecular weight:809.09Cefaclor Monohydrate
CAS:Controlled ProductApplications Second-generation cephalosporin antibiotic. Antibacterial. References Gray, B.M., et al.: Antimicrob. Agents Chemother., 13, 988 (1978), Lorenz, L.J., et al.: Anal. Profiles Drug Subs., 9, 107 (1980), Hori, R., et al.: J. Pharm. Pharmacol., 40, 646 (1988),Formula:C15H14ClN3O4S·H2OColor and Shape:NeatMolecular weight:385.82Epothilone D (synthetic)
CAS:Controlled ProductApplications Epothilones are polyketide natural products that inhibit cancer cells by a mechanism similar to paclitaxel, and also are effective against paclitaxel-resistant tumours. Epothilone D is in phase I clinical testing of in patients with advanced solid tumours. Epothilone D is a cytotoxic macrolide that stabilises malignant cells' microtubules and arrests mitosis, a characteristic it shares with other epothilones. They bind to the same hepatic sites as does paclitaxel (Taxol) in a 1:1 stoichiometric ratio of a, b-tubulin heterodimers. References Bollag, D.M., et al.: Cancer. Res., 55, 2325 (1995), Hardt, I.H., et al.: J. Nat. Prod., 64, 847 (2001), Gerth, K., et al.: J. Antibiot., 55, 41, 45 (2002)Formula:C26H39NO5SColor and Shape:NeatMolecular weight:477.66Erythromycin A N-oxide
CAS:Controlled ProductStability Sample is unstable in solution Applications Erythromycin A N-oxide is a facile metabolite of erythromycin A.Formula:C37H67NO14Purity:>80%Color and Shape:NeatMolecular weight:749.93Piperacillin sodium
CAS:(CL227193) )binds to and inactivates penicillin-binding proteins (PBPs), enzymes located on the inner membrane of the bacterial cell wall, resulting in theFormula:C23H26N5NaO7SPurity:99.11% - 99.66%Color and Shape:SolidMolecular weight:539.54Erythromycin Impurity 2
Formula:C37H66N2O14Color and Shape:White To Off-White SolidMolecular weight:762.94Piperacillin EP Impurity B (Mixture of Diastereomers)
CAS:Formula:C23H29N5O8SColor and Shape:White To Off-White SolidMolecular weight:535.57Cefotetan
CAS:Cefotetan, a cephamycin antibiotic, fights various bacteria by disrupting cell wall synthesis.Formula:C17H17N7O8S4Purity:95.72% - 99.38%Color and Shape:SolidMolecular weight:575.62Dapaconazole
CAS:Dapaconazole is used as a drug candidate for antifungals.Formula:C19H15Cl2F3N2OColor and Shape:SolidMolecular weight:415.24Cefepime Impurity 10
Formula:C10H16N4O4SColor and Shape:White To Off-White SolidMolecular weight:288.32N-Nitroso Caspofungin Ditrifluoroacetate
Formula:C52H87N11O16·2C2HF3O2Molecular weight:1122.33 2*114.022-NP-AMOZ
CAS:Applications A derivatized of AMOZ (A634600), a metabolite of Nitrofuran.Environmental contaminants; Food contaminants; Heat processing contaminants References Vroomen, L., et al.: Toxicol. Appl. Pharmacol., 95, 53 (1988), Delatour, T., et al.: J. Agric. Food Chem., 51, 6371 (2003), Stadler, R., et al.: Analyst, 129, 276 (2004),Formula:C15H18N4O5Color and Shape:NeatMolecular weight:334.33NMP-ACA (cefepime impurity)
CAS:NMP-ACA is a metabolite of cefepime. It is a synthetic, impurity standard for use in HPLC. It has an analytical purity of >98%. The metabolites of NMP-ACA are not known at this time.Formula:C13H19N3O3SPurity:Min. 95%Molecular weight:297.37 g/molClarithromycin
CAS:Erythromycin and its derivatives; salts thereofFormula:C38H69NO13Color and Shape:White Off-White PowderMolecular weight:747.47689Ledipasvir
CAS:Ledipasvir (GS-5885) is a Hepatitis C Virus NS5A Inhibitor.Formula:C49H54F2N8O6Purity:99.46%Color and Shape:SolidMolecular weight:889Ref: TM-T6200
1mg38.00€2mg49.00€5mg79.00€10mg88.00€25mg159.00€50mg256.00€100mg444.00€500mg1,017.00€1mL*10mM (DMSO)88.00€Clindamycin Pyrophosphate Triethylamine salt
Formula:C18H35ClN2O11P2S·nC6H15NMolecular weight:584.94 n*101.19
