Description

Erythromycin is a broad-spectrum macrolide antibiotic derived from *Streptomyces erythreus*, widely recognized for its efficacy against Gram-positive and some Gram-negative bacteria. This compound is a critical active pharmaceutical ingredient (API) essential for formulating a range of therapeutic treatments. It is primarily utilized by pharmaceutical manufacturers, veterinary medicine producers, and research institutions developing antimicrobial solutions.

Application

• Human Pharmaceutical Formulations: Core API for oral tablets, capsules, topical ointments, and intravenous solutions to treat respiratory tract, skin, and soft tissue infections.
• Veterinary Medicine: Used in medicated feeds, injectables, and topical preparations for livestock, poultry, and companion animals.
• Research & Development: Serves as a standard reference material and a key intermediate in biochemical and microbiological research studies.
• Cosmetic & Personal Care: Incorporated in anti-acne creams and lotions for its bacteriostatic properties against *Cutibacterium acnes*.

Basic Information

Product Name	Erythromycin
CAS No.	114-07-8
Molecular Formula	C37H67NO13
Molecular Weight	733.93 g/mol
Synonyms	Erythromycin A; Erythrocin; Ilotycin; E-Mycin; Abbott-24031; Erythromycin lactobionate (derivative); Erythromycin stearate (derivative); (3R,4S,5S,6R,7R,9R,11R,12R,13S,14R)-6-{[(2S,3R,4S,6R)-4-(Dimethylamino)-3-hydroxy-6-methyloxan-2-yl]oxy}-14-ethyl-7,12,13-trihydroxy-4-{[(2R,4R,5S,6S)-5-hydroxy-4-methoxy-4,6-dimethyloxan-2-yl]oxy}-3,5,7,9,11,13-hexamethyl-1-oxacyclotetradecane-2,10-dione
EINECS	204-040-1

Quality Control

Our Erythromycin is manufactured under strict quality management systems. It is tested to meet or exceed relevant pharmacopeial standards such as USP, EP, and BP. Every batch is accompanied by a comprehensive Certificate of Analysis (COA) confirming identity, purity, potency, and the absence of specified impurities, ensuring reliable performance in your critical applications.

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 low-humidity environment to prevent degradation.

Specification

Item	Specification
Appearance	White or slightly yellow crystalline powder
Identification (IR)	Conforms
Identification (HPLC)	Conforms
Assay (HPLC)	95.0% - 102.0% (on anhydrous basis)
Water (Karl Fischer)	≤ 6.0%
Residue on Ignition	≤ 0.5%
Heavy Metals	≤ 20 ppm
Specific Rotation	-71° to -78° (c=2, in ethanol)
pH (in methanol)	8.0 - 10.5

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