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Substance Name: XK 46
RN: 50813-46-2


  • Antibiotic produced by thermophilic Streptomyces sp. MK-46; pH color indicator.

Classification Codes

  • Drug / Therapeutic Agent
  • Natural Product
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Names and Synonyms

Name of Substance

  • XK 46


  • XK 46

Systematic Name

  • Antibiotic XK 46

Registry Numbers

CAS Registry Number

  • 50813-46-2

System Generated Number

  • 0050813462


Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 intraperitoneal 12500ug/kg (12.5mg/kg)   Journal of Antibiotics. Vol. 27, Pg. 502, 1974.