Framycetin

Molecular Formula: C23H52N6O25S3
CAS Number: 119-04-0
CAS Number: 4146-30-9
Appearance: White solid

Standard grade neomycin is composed of a number of related compounds includingneomycin A (neamine), neomycin B (framycetin), neomycin C, and a few minor compounds found in much lower quantities. Neomycin B is the most active component in neomycin followed by neomycin C and neomycin A. Neomycin A is an inactive degradation product of the C and B isomers. The quantities of these components in neomycin vary from lot-to-lot depending on the manufacturer and manufacturing process. Framycetin Sulfate is the sulfate salt form of framycetin, an aminoglycoside antibiotic isolated from Streptomyces lavendulae (decaris), mainly containing neomycin B, with broad-spectrum antibacterial activity. Framycetin is used mostly as a topical preparation and is poorly absorbed. . Neomycin B is available alone under the name framycetin for topical use. It is required to contain not more than 3% neomycin C and not more than 1% neomycin A. Buffered aqueous solutions (pH 7) are stable at room temperature. Framycetin is an aminoglycoside antibiotic agent that is used in combination with other drugs for treating infections. It is used together with antiseptic and anti bacterial eye drops, topical antiseptic creams, etc. It helps to prevent the spread of infection caused by bacteria by restricting the growth and replication of the bacterial cells.