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Biochemicals

Antibiotics & Antimycotics for Research

Antibiotics, antifungals, cephalosporin nuclei and selection agents for cell culture, microbiology research and antimicrobial studies.
81 productsCOA + SDS with every lot
81 products · page 1 of 4
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Bacitracin
CAS
1405-87-4
Formula
C66H103N17O16S
MW
1422.7 g/mol
ZX-003722
Cephaloridine
CAS
50-59-9
Formula
C19H17N3O4S2
MW
415.5 g/mol
ZX-018727

Antibiotics in the lab protect cultures, select transformed cells and serve as tools for studying resistance and protein synthesis. This sub-category supplies research-grade antibiotics, antimycotics and related compounds. Examples include Actidione (cycloheximide) for tissue culture 98%+, the cephalosporin nuclei 7-Aminocephalosporanic acid and 7-ADCA, (S)-(+)-Camptothecin at ≥98% by HPLC, and 8-Hydroxy quinoline in GR grade.

The working concentration depends on the organism and the purpose, so buyers look at potency, solubility and stability in medium. Several compounds lose activity when warm or in solution, which is why stocks are frozen in aliquots. Research-grade antibiotics are distinct from pharmaceutical APIs, and our APIs division lists bulk drug substances where those are needed.

Most products are packed in sealed vials or bottles and stored cold. Each lot ships with a COA showing purity or potency, plus an SDS. Some antibiotics are controlled for export or import in certain countries, and we will advise at quotation.

Antibiotics & Antimycotics for Research: questions buyers ask

What is cycloheximide used for in research?
Cycloheximide blocks protein synthesis in eukaryotic cells by inhibiting translation elongation. It is used to measure protein half-lives in chase experiments, and in microbiology media to suppress fungal growth while bacteria grow. Handle it with care, as it is toxic, and follow the SDS for safe weighing and disposal.
Why are 7-ACA and 7-ADCA listed here?
These are the core nuclei from which semi-synthetic cephalosporins are made. Researchers use them for synthesising new derivatives, as reference materials and in enzymatic process studies. They have little antibacterial activity themselves but are valuable starting points in cephalosporin chemistry.
How should antibiotic stock solutions be stored?
Prepare concentrated stocks in the recommended solvent, filter sterilise if needed, and freeze in single-use aliquots at minus 20 °C. Avoid repeated thawing. Light-sensitive compounds need dark storage. Many beta-lactams lose potency quickly in solution at room temperature, so add them to cooled media just before use.

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