Description

Fosfomycin Calcium CAS NO 25992-22-7 is the calcium salt of the broad-spectrum antibiotic fosfomycin. This compound is valued for its unique mechanism of action, inhibiting bacterial cell wall synthesis at an early stage, which makes it effective against various resistant strains. It is a critical active pharmaceutical ingredient (API) primarily required by pharmaceutical manufacturers for the production of oral antibiotic formulations.

Application

• Pharmaceutical API: Primary use as the active ingredient in oral antibiotic medications for treating urinary tract infections (UTIs) and other bacterial infections.
• Veterinary Medicine: Formulation of antibacterial treatments for livestock and companion animals.
• Research & Development: Used in microbiological studies and as a reference standard in analytical laboratories.
• Combination Therapies: Employed in synergistic antibiotic combinations to combat multi-drug resistant bacteria.

Basic Information

Product Name	Fosfomycin Calcium
CAS No.	25992-22-7
Molecular Formula	C3H5CaO4P
Molecular Weight	176.13 g/mol
Synonyms	Fosfomycin Calcium Salt; Calcium Fosfomycin; (1R,2S)-1,2-Epoxypropylphosphonic Acid Calcium Salt; Phosphomycin Calcium; MK-0955 Calcium Salt; Fosfomycin Calcium Hydrate; Fosfomycin Ca; Monurol (brand name reference)
EINECS	Contact for details

Quality Control

Our Fosfomycin Calcium is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing to ensure it meets high-purity standards suitable for pharmaceutical applications. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment 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 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.

Specification

Item	Specification
Appearance	White or almost white crystalline powder
Identification (IR)	Conforms to standard
Assay (HPLC)	98.0% - 102.0% (on anhydrous basis)
Water Content (KF)	≤ 2.0%
pH (10% solution)	7.0 - 9.0
Heavy Metals	≤ 20 ppm
Residue on Ignition	≤ 0.1%
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 1.5%

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