Description

L-Cefadroxil CAS NO 144790-28-3 is a semi-synthetic, broad-spectrum cephalosporin antibiotic belonging to the first generation. It is a key pharmaceutical active ingredient valued for its effectiveness against a wide range of Gram-positive and some Gram-negative bacteria. This compound is essential for manufacturers in the pharmaceutical industry, particularly for the production of oral antibiotic formulations. Its stability and bioavailability make it a critical component in combating bacterial infections.

Application

• Pharmaceutical Active Ingredient (API): Primary use in the manufacture of oral antibiotic capsules, tablets, and suspensions.
• Veterinary Medicine: Formulated for treating bacterial infections in livestock and companion animals.
• Research & Development: Serves as a reference standard and intermediate in microbiological and pharmacological studies.
• Generic Drug Production: A critical component for companies producing generic cephalosporin medications.
• Bulk Drug Substance: Supplied in bulk quantities to formulation plants for downstream processing into finished dosage forms.

Basic Information

Product Name	L-Cefadroxil
CAS No.	144790-28-3
Molecular Formula	C16H17N3O5S
Molecular Weight	363.39 g/mol
Synonyms	(6R,7R)-7-[[(2R)-Amino(4-hydroxyphenyl)acetyl]amino]-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid; Cefadroxil (L-form); Cefadroxil Monohydrate (related form); Duricef (brand name); Ultracef; Baxan; Cefa-Drops; Kefroxil
EINECS	Contact for details

Quality Control

Our L-Cefadroxil is produced under strict quality management systems. Each batch undergoes comprehensive analytical testing to ensure it meets high-purity standards suitable for pharmaceutical applications. Certificates of Analysis (COA) documenting purity, identity, and impurity profiles are provided with every shipment. We adhere to current Good Manufacturing Practices (cGMP) and can support documentation for regulatory submissions.

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). This material is hygroscopic (moisture-sensitive) and must be kept under conditions that prevent absorption of atmospheric moisture to maintain stability and potency.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to standard
Identification (HPLC)	Retention time corresponds to reference
Assay (HPLC)	98.0% - 102.0% (on anhydrous basis)
Water Content (KF)	≤ 6.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Residue on Ignition	≤ 0.2%
Heavy Metals	≤ 20 ppm
Microbial Limits	Meets Ph. Eur./USP requirements

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