OXACILLIN SODIUM

그림문자(GHS)

• 그림문자(GHS)

  

• 신호 어

  Danger

• 유해·위험 문구

  H334：흡입 시 알레르기성 반응, 천식 또는 호흡 곤란 등을 일으킬 수 있음

• 예방조치문구

  P261：분진·흄·가스·미스트·증기·...·스프레이의 흡입을 피하시오.

  P285：환기가 잘 되지 않는 곳에서는 호흡기 보호구를 착용하시오

  P304+P341：들이마신 경우,호흡이 어려운 경우 환자를 신선한 공기가 있는 곳으로 옮기고 호흡하기 편한 자세로 안정을 취하게 함

  P342+P311：호흡기 증상이 나타나면 의료기관(의사)의 진찰을 받으시오.

  P501：...에 내용물 / 용기를 폐기 하시오.

OXACILLIN SODIUM 화학적 특성, 용도, 생산

• 화학적 성질

  Crystalline

• 용도

  Oxacillin sodium salt is a narrow spectrum beta-lactam antibiotic. It can be used in analytical study of combination of reversed phase liquid chromatography and zwitterion exchange-reversed phase-hydrophilic interaction mixed-mode liquid chromatography coupled with mass spectrometry for anal. of antibiotics and their impurities.

• Clinical Use

  Oxacillin sodium, (5-methyl3-phenyl-4-isoxazolyl)penicillinsodium monohydrate (Prostaphlin), is the salt of a semisyntheticpenicillin that is highly resistant to inactivation bypenicillinase. Apparently, the steric effects of the 3-phenyland 5-methyl groups of the isoxazolyl ring prevent the bindingof this penicillin to the β-lactamase active site and,thereby, protect the lactam ring from degradation in muchthe same way as has been suggested for methicillin. It is alsorelatively resistant to acid hydrolysis and, therefore, may beadministered orally with good effect.
  Oxacillin sodium, which is available in capsule form, isreasonably well absorbed from the gastrointestinal (GI)tract, particularly in fasting patients. Effective plasma levelsof oxacillin are obtained in about 1 hour, but despite extensiveplasma protein binding, it is excreted rapidly throughthe kidneys. Oxacillin experiences some first-pass metabolismin the liver to the 5-hydroxymethyl derivative. Thismetabolite has antibacterial activity comparable to that ofoxacillin but is less avidly protein bound and more rapidlyexcreted. The halogenated analogs cloxacillin, dicloxacillin,and floxacillin experience less 5-methyl hydroxylation.
  The use of oxacillin and other isoxazolylpenicillinsshould be restricted to the treatment of infections causedby staphylococci resistant to penicillin G. Although theirspectrum of activity is similar to that of penicillin G, theisoxazolylpenicillins are, in general, inferior to it and thephenoxymethylpenicillins for the treatment of infectionscaused by penicillin G-sensitive bacteria. Because isoxazolylpenicillinscause allergic reactions similar to thoseproduced by other penicillins, they should be used withgreat caution in patients who are penicillin sensitive.

• Purification Methods

  This antibiotic, which is stable to penicillinase, is purified by recrystallisation from isoPrOH and dried in vacuo. Its solubility in H2O at 25o is 5%. [Doyle et al. Nature 192 1183 1961, Review: Chain et al. Antibiotics (Oxford University Press) 2 1949.]

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