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Phenoxymethylpenicillin

CAS No.: 87-08-1

  • Molecular Formula: C₁₆H₁₈N₂O₅S
  • Molecular Weight: 350.4 g/mol

Chemical type

  • Beta-lactam antibiotic

Key properties

  • Used as reference in LC-MS/MS quantification
  • Retention time: 4.04 min in chromatographic analysis
  • Transitions for quantitation: 351.1 > 160.1 (16 eV) and 351.1 > 114.1 (35 eV)
  • Internal standard in cefotaxime residue analysis in shrimp tissues and plasma

Classification by use

  • Analytical reagents in pharmacokinetics studies
  • Chemicals for mass spectrometry calibration

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  1. Pharmacokinetics and Withdrawal Times of Cefotaxime in White Leg Shrimp (Litopenaeus vannamei) after Oral Administration, Fishes, 2024, 9(6), 232