Penicillin-V-d-5--(potassium-salt)

Penicillin V-d5 is intended for use as an internal standard for the quantification of penicillin V (Item No. 23635) by GC- or LC-MS. Penicillin V is a β-lactam antibiotic that inhibits the growth of bacteria. In vitro, penicillin V inhibits the growth of clinical isolates of Streptococci (MICs = 0.004-0.008 mg/L) and C. difficile (MICs = 1 to >256 mg/L). Penicillin V also inhibits growth of S. aureus in vitro (MIC = 0.016 mg/L) and in vivo in a thigh model of infection in mice. It inhibits the growth of S. pyogenes in mice following one or two dose therapy with curative dose (CD50) values of 0.207...