Description

Cefdinir CAS NO 91832-40-5 is a third-generation, broad-spectrum cephalosporin antibiotic belonging to the β-lactam class. It is valued for its potent activity against a wide range of Gram-positive and Gram-negative bacteria, including many β-lactamase-producing strains. This active pharmaceutical ingredient (API) is essential for the formulation of oral antibiotic medications targeting respiratory tract, skin, and soft tissue infections. Pharmaceutical manufacturers and research institutions globally rely on high-purity Cefdinir for developing effective and compliant therapeutic solutions.

Application

• Pharmaceutical API: Primary use as the active ingredient in the manufacture of oral solid dosage forms such as capsules, tablets, and oral suspensions.
• Antibacterial Formulations: Formulated into medications for treating community-acquired pneumonia, acute exacerbations of chronic bronchitis, acute maxillary sinusitis, pharyngitis/tonsillitis, and uncomplicated skin infections.
• Veterinary Medicine: Potential application in veterinary pharmaceuticals for treating bacterial infections in animals.
• Research & Development: Used in biochemical and microbiological research to study bacterial resistance mechanisms and develop new antibacterial agents.
• Reference Standard: Serves as a high-purity chemical reference standard in analytical laboratories for quality control and method validation.
• Custom Synthesis: Acts as a key intermediate or starting material for the custom synthesis of novel cephalosporin derivatives and prodrugs.

Basic Information

Item	Detail
Product Name	Cefdinir
CAS No.	91832-40-5
Molecular Formula	C14H13N5O5S2
Molecular Weight	395.41 g/mol
Synonyms	(6R,7R)-7-[[(2Z)-2-(2-Amino-1,3-thiazol-4-yl)-2-hydroxyiminoacetyl]amino]-3-ethenyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid; Cefdinirum; FK-482; CI-983; OMNICEF® (brand name); Cefzon; Kefnir; Cefdiel
EINECS	Contact for details

Quality Control

Our Cefdinir is manufactured under strict quality management systems to ensure it meets the stringent requirements of the global pharmaceutical industry. Quality is assured through comprehensive analytical testing, including HPLC for purity and assay, identification by IR and NMR spectroscopy, and rigorous control of related substances and residual solvents. We can supply material compliant with major pharmacopeial standards such as USP, EP, and JP. A detailed Certificate of Analysis (COA) is provided with each batch to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect stability and potency. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to slightly yellowish powder
Identification (IR)	Conforms
Identification (HPLC)	Conforms
Assay (HPLC)	98.0% - 102.0% (on anhydrous basis)
Water (Karl Fischer)	≤ 1.0%
Residue on Ignition	≤ 0.2%
Related Substances (HPLC)	Individual impurity: ≤ 0.5% Total impurities: ≤ 2.0%
Heavy Metals	≤ 20 ppm
Microbial Limits	Conforms to EP/USP

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.