Assay (HPLC)：≥98.0% (Common standard for pharmaceutical/reagent grade) Melting Point：218–225 ℃ (decomposition) Loss on Drying：≤1.0% Related Substances：Single impurity ≤1.0%, total impurities ≤3.0% Water Content：≤1.0% Heavy Metals：≤10 ppm pH (1% Aqueous Solution)：2.0–4.0 Appearance：Off-white to pale yellow crystalline powder, conforms to standard

Identification (HPLC/IR/MS)：Consistent with reference standard, qualified

1. Core Medical Application

   Third-generation oral broad-spectrum cephalosporin antibiotic with potent activity against both Gram-positive (Streptococcus spp.) and Gram-negative (Neisseria gonorrhoeae, Haemophilus influenzae, Escherichia coli, etc.) bacteria. It is stable against β-lactamase. Clinically indicated for respiratory tract infections (pneumonia, bronchitis, tonsillitis), urogenital infections (gonorrhea, cystitis, pyelonephritis), biliary tract infections, otitis media, sinusitis, scarlet fever, etc.
2. Research & Reagent Application

   As antibiotic reference standard/standard substance for microbial susceptibility testing, antibiotic activity determination, β-lactamase stability studies, and pharmacokinetic experiments.
3. Other Applications

   Used in veterinary medicine for preventing and treating bacterial infections in livestock and poultry; in aquaculture for controlling bacterial diseases in aquatic animals.