Product name: Azithromycin
Cas no: 83905-01-5
Standard: USP26, EP
Appearance: The white or almost white crystalline powder
Molecular formulaC38H72N2012
Molecular weight748.99
Melting point 113-115 degree
Azithromycin is an azalide, a subclass of macrolide antibiotics. Azithromycin is one of the world's best-selling antibiotics, and is derived from erythromycin; However, it differs chemically from erythromycin in that a methyl-substituted is incorporated into the lactone ring, thus making the lactone ring 15-membered. Azithromycin is used to treat certain bacterial infections, most often those causing middle ear infection, tonsillitis, throat infections, laryngitis, bronchitis, pneumonia and sinusitis. It is also effective against certain sexually transmitted infectious diseases, such as non-gonococcal urethritis and cervicitis. Recent studies have also indicated it to be effective against late-onset asthma, but these findings are controversial and not widely accepted yet.