National Toxicology Program

National Toxicology Program
http://ntp.niehs.nih.gov/go/ts-10656-e

Testing Status of Erythromycin stearate - 10656-E

 

CASRN: 643-22-1

Formula: C37-H67-N-O13.C18-H36-O2

Synonyms/Common Names

  • Erythromycin octadecanoate (salt)

Known Uses

Antibacterial agent.

Chemical Properties

Toxicity Effects (HSDB)

Short-Term Toxicity

  • 14-Day (Dosed-Feed)  (C55674)  Completed 
    • Rats: F344/N; Mice: B6C3F1
  • 13-Week (Dosed-Feed)  (C55674)  Completed 
    • Rats: F344/N; Mice: B6C3F1

Long-Term Carcinogenicity

  • 2 years (Dosed-Feed)  (C55674)  Report Complete 
    • TR-338 (NIH Number: 89-2594)  (Peer Review Approval 07/14/1987A )
      Toxicology and Carcinogenesis Studies of Erythromycin Stearate (CASRN 643-22-1) in F344/N Rats and B6C3F1 Mice (Feed Studies)
    • Rats: F344/N; Mice: B6C3F1
    • Carcinogenesis Results
      • Male Rats No Evidence 
      • Female Rats No Evidence 
      • Male Mice No Evidence 
      • Female Mice No Evidence 
    • Dose: R: 0,5000,10000 M: 0,2500,5000 PPM/50 PER GROUP.

Genetic Toxicology

  • In Vitro Cytogenetics (CA/SCE)  (756378)  Completed 
    • Citation: Anderson, B.E., Zeiger, E., Shelby, M.D., Resnick, M.A., Gulati, D.K., Ivett, J.L., and Loveday, K.S. Chromosome aberration and sister chromatid exchange test results with 42 chemicals. Environ. Molec. Mutagen. Vol. 16 (Suppl 18) (1990) 55-137
    • Sister Chromatid Exchange Negative 
    • Chromosome Aberrations Negative 
  • Mouse Lymphoma  (146253)  Completed 
    • Citation: Myhr B.C., McGregor, D., Bowers, L., Riach, C., Brown, A., Edwards, I., McBride, D., Martin, R., and Caspary, W.J. L5178Y mouse lymphoma cell mutation assay results with 41 compounds. Environ. Molec. Mutagen. Vol. 16 (Suppl 18) (1990) 138-167
    • Mice
    •  Equivocal 
  • Salmonella  (457939)  Completed 
    • Citation: Mortelmans, K., Haworth, S., Lawlor, T., Speck, W., Tainer, B., and Zeiger, E. Salmonella mutagenicity tests. II. Results from the testing of 270 chemicals Environ. Mutagen. Vol. 8 (Suppl 7) (1986) 1-119
    •  Negative 
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