Cefixime Trihydrate

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Product Description

Cefixime trihydrate is a broad-spectrum third generation cephalosporin targeting a wide range of gram-positive and gram-negative organisms. It is also used to detect ytterbium in mineral probes.

Cephalosporins are a type of β-lactam antibiotic consisting of a four-membered β-lactam ring bound to a six-membered dihydrothiazine ring. This two-ring system causes distortion of the β-lactam amide bond, resulting in decreased resonance stabilization and increased reactivity. β-lactams inhibit the formation of peptidoglycan cross-links within bacterial cell walls by targeting penicillin-binding proteins or PBPs. Consequently, the bacterial cell wall becomes weak and cytolysis occurs. Cephalosporins are less susceptible to β-lactamases than the penicillin β-lactam antibiotics.

Antibiotics are often used in clinical in vitro tests known as antimicrobial susceptibility tests or ASTs to determine their efficacy against certain bacterial species. They are tested against gram-negative and gram-positive bacteria using panels, discs, and MIC strips by medical microbiologists. ASTs decrease the risk of using an antibiotic against bacteria exhibiting resistance to it, and the results are used in clinical settings to determine which antibiotic(s) to prescribe for various infections.

Product Specifications
Cefixime Trihydrate


Formula: C16H15N5O7S2 ∙ 3H2O

MW: 507.50 g/mol

Storage/Handling: Store desiccated at 4°C. Protect from light and air. Store under inert gas.

PubChem Chemical ID: 5362065

Product Specifications

Catalog ID C-620
CAS # 125110-14-7
MW 507.50 g/mol
Storage/Handling Store desiccated at 4°C. Protect from light and air. Store under inert gas.

Technical Documentation

P Protocol
O Other
C Certificate of Analysis
S Safety Data Sheet

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