Description

Oxytetracycline, Calcium Salt is a broad-spectrum antibiotic belonging to the tetracycline class, formulated as a stable calcium complex. This compound is valued for its efficacy against a wide range of Gram-positive and Gram-negative bacteria, mycoplasma, and certain protozoa. It is a critical active pharmaceutical ingredient (API) and feed additive for the veterinary, aquaculture, and pharmaceutical manufacturing industries, where reliable microbial control is paramount.

Application

• Veterinary Pharmaceuticals: Primary API in formulations for treating bacterial infections in livestock, poultry, and companion animals.
• Aquaculture & Fish Farming: Used in medicated feeds to control diseases like furunculosis in salmon and other bacterial infections in farmed fish and shrimp.
• Animal Feed Additive: Incorporated at sub-therapeutic levels to promote growth and improve feed efficiency in food-producing animals.
• Topical Preparations: Used in ointments, powders, and sprays for treating skin and eye infections in animals.
• API Intermediate: Serves as a key starting material or intermediate in the synthesis of other tetracycline-derived pharmaceuticals.
• Agricultural Uses: Occasionally employed for the control of certain bacterial plant diseases, such as fire blight.

Basic Information

Product Name	Oxytetracycline, Calcium Salt
CAS No.	13303-91-8
Molecular Formula	C44H46CaN2O18
Molecular Weight	946.92 g/mol
Synonyms	Oxytetracycline Calcium; Oxytetracycline Calcium Salt; Terramycin Calcium; 4-(Dimethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,5,6,10,12,12a-hexahydroxy-6-methyl-1,11-dioxo-2-naphthacenecarboxamide, calcium salt; OTC Calcium; Oxytetracycline Ca; Calcium Oxytetracycline; Oxytetracycline Calcium Complex
EINECS	Contact for details

Quality Control

Our Oxytetracycline, Calcium Salt is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for potency and purity, to ensure it meets stringent specifications for pharmaceutical and feed-grade applications. Certificates of Analysis (COA) documenting identity, assay, impurities, and microbiological quality are 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 a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept in a dry environment to prevent degradation. Keep away from strong acids, bases, and oxidizing agents.

Specification

Item	Specification
Appearance	Yellow to light brown powder
Identification (IR)	Conforms
Identification (HPLC)	Conforms
Assay (on dried basis)	95.0% - 102.0%
pH (1% suspension)	6.0 - 8.0
Loss on Drying	≤ 2.0%
Heavy Metals	≤ 20 ppm
Residue on Ignition	8.0% - 12.0%
Specific Optical Rotation	-188° to -200°
Related Substances (HPLC)	Total impurities ≤ 3.0%

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