penicillanic acid

pen·i·cil·lan·ic ac·id

(pen'i-si-lan'ik as'id),
A penicillin without the characterizing R group (with H- replacing ROONH-) of penicillin.
References in periodicals archive ?
Penicillins and their derivatives with a penicillanic acid structure, streptomycins and their derivatives, tetracyclines and their derivatives, chloramphenicol and its derivatives, erythromycin and its derivatives and other antibiotics and salts thereof of all the above.
clavulanate and penicillanic acid sulphones), sincc MBLs are capable of hydrolyzing most [beta]-lactams and are not susceptible to inhibitors.