Rifampicin
Rifampicin is a member of the class of rifamycins that is a a semisynthetic antibiotic derived from Amycolatopsis rifamycinica (previously known as Amycolatopsis mediterranei and Streptomyces mediterranei). It has a role as an EC 2.7.7.6 (RNA polymerase) inhibitor, a DNA synthesis inhibitor, an antitubercular agent, a leprostatic drug, an Escherichia coli metabolite, a protein synthesis inhibitor, a neuroprotective agent, an angiogenesis inhibitor, a pregnane X receptor agonist, an antineoplastic agent, an antiamoebic agent and a geroprotector. It is a N-iminopiperazine, a N-methylpiperazine, a hydrazone, a cyclic ketal, a semisynthetic derivative and a member of rifamycins. It is a tautomer of a rifampicin zwitterion.