NCIt definition : A derivative of clindamycin with a 6-membered ring replacing clindamycin's 5-membered
ring. Compared to clindimycin, pirlimycin has increased activity against gram-positive
bacteria, including Staphylococcus aureus and coagulase negative species of Staphylococcus
and Streptococcus. This agent is primarily used in the treatment of mastitis in cattle.;