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Substance Name: Calfactant [USAN:BAN]
RN: 183325-78-2


  • Infasurf is tradename; a lung surfactant extract from new born calves containing 35 mg/mL phospholipid & 2% surfactant-associated proteins B & C (wt/wt).

Molecular Formula

  • Unspecified

Classification Codes

  • Calf Lung Surfactant
  • Prevention and Treatment of Neonatal Respiratory Distress Syndrome(Pulmonary Surfactant)
  • Pulmonary Surfactants
  • Respiratory System Agents
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Names and Synonyms

Name of Substance

  • Calfactant
  • Calfactant [USAN:BAN]


  • Calfactant
  • Calfactant. An unmodified calf lung lavage extract containing mostly phospholipids and surfactant specific proteins (SP-B and SP-C)
  • Infasurf
  • Infasurf preservative free
  • UNII-Q4K217VGA9

Registry Numbers

CAS Registry Number

  • 183325-78-2


  • Q4K217VGA9

System Generated Number

  • 0183325782