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CAS RN: 72559-06-9 | Product Number: R0211


Purity: >98.0%(HPLC)
  • Ansamycin
  • LM-427
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Product Number R0211
Purity / Analysis Method >98.0%(HPLC)
Molecular Formula / Molecular Weight C__4__6H__6__2N__4O__1__1 = 847.02  
Physical State (20 deg.C) Solid
Storage Temperature <0°C
Condition to Avoid Heat Sensitive
CAS RN 72559-06-9
Reaxys Registry Number 3584778
Merck Index (14) 8213
MDL Number


Appearance Red to Dark red to Brown powder to crystaline
Purity(HPLC) min. 98.0 area%
Purity(Nonaqueous Titration) min. 97.0 %
Properties (reference)
Melting Point 156 °C
Maximum Absorption Wavelength 493(MeOH) nm
Solubility in water Practically insoluble
Solubility (very soluble in) Chloroform
Solubility (soluble in) Methanol
Solubility (slightly sol. in) Ethanol
Related Laws: / Compliance with laws, Regulations
RTECS# VJ6700000
Transport Information:
HS Number 2941900000
Rifabutin: a derivative of rifamycin S with anti-mycobacteria activity

Rifabutin is a derivative of rifamycin S [R0200], belonging to the class of ansamycins, with activity against mycobacteria including atypical organisms such as Mycobacterium avium and M. intracellulare, also referred to as Mycobacterium avium-intracellulare complex (MAC). Rifabutin inhibits DNA-dependent RNA polymerase in susceptible strains of Escherichia coli and Bacillus subtilis but not in mammalian cells. (The product is for research purpose only.)


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