Overview
Cefdinir Active Ester is a critical intermediate compound in the production of cefdinir, a broad-spectrum third-generation cephalosporin antibiotic. As a β-lactam antibiotic precursor, it plays a vital role in pharmaceutical synthesis chains. The compound's molecular structure contains the characteristic cephalosporin core with modified side chains that enable final drug activity. Developed primarily for antimicrobial applications, this intermediate undergoes further chemical processing to yield the active pharmaceutical ingredient (API). Its synthesis requires controlled conditions to maintain stereochemical purity, as the (6R,7R) configuration is essential for biological efficacy.
Physical and Chemical Properties
The compound presents as a white crystalline solid with low solubility in water but moderate solubility in organic solvents like DMSO. Its molecular weight of 421.45 g/mol reflects the complex structure containing thiazole and β-lactam rings. Thermal analysis shows decomposition beginning at 180°C rather than distinct melting. Key chemical properties include sensitivity to hydrolysis (especially in acidic/basic conditions) and photodegradation. The hydroxylimino and carboxyl ester groups are reactive sites requiring protection during synthesis. Stability studies indicate 24-month shelf life when stored properly in amber glass under nitrogen at 2-8°C.
Main Applications
The primary application is as a penultimate intermediate in cefdinir API manufacturing. Pharmaceutical companies use it in multi-step synthesis processes under GMP conditions to produce oral antibiotics effective against Gram-positive and Gram-negative bacteria. Research applications include studying structure-activity relationships in cephalosporin derivatives. Some manufacturers explore its potential as a starting material for novel antibiotic variants, though such uses remain experimental. The global demand correlates directly with cefdinir production volumes, which serve markets in North America, Europe, and Asia.
Safety and Storage
As a pharmaceutical intermediate, proper handling requires engineering controls and personal protective equipment. The powder can cause eye/skin irritation, and inhalation of dust should be prevented through local exhaust ventilation. Spills should be contained with inert absorbents and disposed as hazardous waste. Long-term storage mandates dry, oxygen-free environments below 8°C. Desiccants and nitrogen blankets are recommended for bulk containers. Quality control includes regular purity checks via HPLC, with special attention to moisture content (<0.5% by KF titration). Transportation typically uses temperature-controlled, UN-certified packaging for sensitive chemicals.
B2B Procurement Guide
Pharmaceutical buyers should prioritize suppliers with: 1) GMP compliance documentation, 2) batch-to-batch consistency reports (HPLC chromatograms), 3) ISO-certified manufacturing facilities. Request impurity profiles showing levels of related substances (e.g., Δ2-isomer). Order quantities typically range from 1kg to 100kg, with bulk discounts available. Lead times vary from 4-8 weeks for custom synthesis. Consider auditing suppliers for: solvent recovery systems (environmental compliance), stability testing capabilities, and cold chain logistics. Some buyers opt for toll manufacturing agreements for large-scale production.
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