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ATC (Anatomical Therapeutic Chemical Classification)


CAS registry number (Chemical Abstracts Service)


Chemical Formula


Molecular Weight


Therapeutic Categories

Antiseptic agent, topical

Pharmaceutic aid: Colouring agent

Chemical Name

Tetrabromo-3',6'-dihydroxyspiro[isobenzofuran-1(3H),9'-[9H]xanten]-3-one disodium salt

Foreign Names

  • Eosinum natricum (Latin)
  • Eosin (German)
  • Éosine disodique (French)
  • Eosina disodica (Spanish)

Generic Names

  • Éosine disodique (OS)
  • Acid red 87 (IS)
  • Bromoeosine (IS)
  • C.I. 45380 (IS)
  • D&C Red No. 22 (IS)
  • Eosine Y (IS)
  • Eosine Yellow (IS)
  • Eosine yellowish (IS)
  • Sodium Tetrabromofluorescein (IS)
  • Éosine disodique (PH: Ph. Franç. 11)

Brand Names


ISInofficial Synonym
OSOfficial Synonym
PHPharmacopoeia Name

Further information on drug naming conventions: International Nonproprietary Names.

Important Notice: The international database is in BETA release. This means it is still under development and may contain inaccuracies. It is not intended as a substitute for the expertise and judgement of your physician, pharmacist or other healthcare professional. It should not be construed to indicate that the use of any medication in any country is safe, appropriate or effective for you. Consult with your healthcare professional before taking any medication.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.