Cefdinir
Also known as: Omnicef, Cefdiel, Adcef, Sefdin, Zinix
CAS Number: 91832-40-5
Third-Generation Oral Cephalosporin (Beta-Lactam)
Pharmacopeia Standards
Mechanism of Action
Cefdinir binds penicillin-binding proteins, principally PBP3 and PBP1, and prevents the transpeptidation reaction that cross-links peptidoglycan. The 7-hydroxyimino aminothiazolyl side chain gives good stability to many plasmid-mediated beta-lactamases, while the 3-vinyl group supports oral absorption. Coverage spans Streptococcus pneumoniae, Haemophilus influenzae, Moraxella catarrhalis and methicillin-susceptible staphylococci.
Technical Specifications
| Generic / INN Name | Cefdinir |
| CAS Registry Number | 91832-40-5 |
| Molecular Formula | C14H13N5O5S2 |
| Molecular Weight | 395.41 g/mol g/mol |
| Typical Purity | NLT 96.0% and NMT 102.0% on the anhydrous basis; single unknown impurity NMT 0.10% |
| Storage Conditions | Store below 25 C in tight, light-resistant containers under nitrogen; protect from moisture, light and metal contact. |
| Shelf Life | 36 months in original sealed packaging when stored as directed |
| Category | Cephalosporins |
Specifications are indicative and intended for sourcing reference only. Always confirm against the supplier's Certificate of Analysis and the applicable pharmacopeial monograph before issuing a purchase specification.
Typical Applications
Oral capsules, dispersible tablets and powder for oral suspension; paediatric otitis media and sinusitis products; fixed-dose combinations in South Asian markets.
Manufacturers (1+)
View all →India
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