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Substance Name: Penicillinase [INN:BAN]
RN: 9001-74-5


  • Enzymes found in many bacteria which catalyze the hydrolysis of the amide bond in the beta-lactam ring. Well known antibiotics destroyed by these enzymes are penicillins and cephalosporins.

Molecular Formula

  • Unspecified

Classification Code

  • TSCA Flag XU (Exempt from Reporting under Chemical Data Reporting Rule)
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Names and Synonyms

Name of Substance

  • Penicillinase [INN:BAN]

MeSH Heading

  • beta-Lactamases


  • AMA-DE
  • beta-Lactamase
  • Cefinase
  • EINECS 232-628-8
  • EINECS 232-970-8
  • Neutrapen
  • Penicilinasa
  • Penicilinasa [INN-Spanish]
  • Penicillinase
  • Penicillinasi
  • Penicillinasi [DCIT]
  • Penicillinasum
  • Penicillinasum [INN-Latin]

Systematic Names

  • Enzyme obtained by fermentation from cultures of Bacillus cereus
  • Lactamase, beta-
  • Penicillinase

Registry Numbers

CAS Registry Number

  • 9001-74-5

Other Registry Number

  • 9073-60-3

System Generated Number

  • 0009001745