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Substance Name: Leucomycin A3 tartrate
RN: 52454-74-7

Classification Code

  • Drug / Therapeutic Agent

Molecular Formula

  • C42-H69-N-O15.C4-H6-O6

Molecular Weight

  • 978.0845
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Names and Synonyms

Results Name

  • Leucomycin A3 tartrate


  • Josamycin tartrate
  • Leucomycin A3 tartrate

Systematic Name

  • Leucomycin V, 3-acetate 4(sup B)-(3-methylbutanoate), (R-(R*,R*))-2,3-dihydroxybutanedioate(salt)

Registry Numbers

CAS Registry Number

  • 52454-74-7

System Generated Number

  • 0052454747

Molecular Formulas

Molecular Formula

  • C42-H69-N-O15.C4-H6-O6

Molecular Formula Fragments

  • C4-H6-O6
  • C42-H69-N-O15


Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 intravenous 304mg/kg (304mg/kg)   Chemotherapy Vol. 17, Pg. 576, 1969.
mouse LD50 oral 3gm/kg (3000mg/kg)   Journal of Antibiotics, Series A. Vol. 20, Pg. 181, 1967.