Specification Test Results

• Appearance:
  Orange to dark red powder
• Infrared spectrum:
  Conforms to Structure
• UV-visible spectrum:
  In methanol (E494 (±3 nm) = 14000 (minimum); E422 (±3 nm) = 9000 (minimum))
• Carbon:
  68.8 - 87.6%
• Nitrogen:
  8.9 - 11.4%
• Solubility:
  10 mg/ml, CHCL₃; clear to opaque, orange to red solution