Structural Prediction of Impurities in Drugs using MSn Data

Erythromycin is a macrolide antibiotic produced by a strain of bacteria known as Saccaropolyspora erythraea. The antibiotic is effective against many gram-positive and some gram-negative bacteria and is often used for people who display allergic reactions to penicillin. Structurally, this compound contains a 14-membered lactone ring (Area C) and two deoxy sugars, D-desoamine (Area A) and L-cladinose (Area B), making it a compound very difficult to produce via synthetic methods.