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In some countries, this medicine may only be approved for veterinary use.



CAS registry number (Chemical Abstracts Service)


Chemical Formula


Molecular Weight


Therapeutic Category

Growth stimulant

Chemical Names

(αS,2R,3R,4R,6S)-4-[[6-Deoxy-4-O-(6-deoxy-2,4-di-O-metyl-α-L-mannopyranosyl)-3-O-metyl-β-D-allopyranosyl]oxy]-N-[(2E,4E,6S,7R)-7-[(2S,3S,4R,5R)-5-[(1E,3E,5E)-6-(1,2-dihydro-4-hydroxy-1-metyl-2-oxonicotinoyl)-1,3,5-heptatrienyl]-α-etyltetrahydro-2,3-dihydroxy-5,5-dimetyl-6-[(1E,3Z)-1,3-pentadienyl-2H-pyran-2-acetamide (WHO)

An antibacterial produced by Streptomyces lactamduransand comprising tree components: efrotomycin A₁, efrotomycin A₂ (an isomer of A₁) and efrotomycin B (BAN)

Mocimycin, 31-O-[6-deoxy-4-O-(6-deoxy-2,4-di-O-metyl-α-L-mannopyranosyl)-3-O-metyl-β-D-allopyranosyl]-1-metyl- (USAN)

Foreign Names

  • Efrotomycinum (Latin)
  • Efrotomycin (German)
  • Éfrotomycine (French)
  • Efrotomicina (Spanish)

Generic Names

  • Efrotomycin (OS: BAN, USAN)
  • Antibiotic FR 02A (IS)
  • BRN 5230192 (IS)
  • FR-02A (IS)
  • L 682313-000 (IS)
  • MK-621 (Merck) (IS)

Brand Name


BANBritish Approved Name
ISInofficial Synonym
OSOfficial Synonym
Rec.INNRecommended International Nonproprietary Name (World Health Organization)
USANUnited States Adopted Name
WHOWorld Health Organization

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

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