Specification Test Results

• Appearance (colour):
  Yellow to very dark yellow and orange to very dark orange
• Appearance (form):
  Powder
• Purity (hplc area %):
  ≥97.5%
• Solubility (colour):
  Yellow to very dark yellow and green-yellow to very dark green-yellow
• Solubility (turbidity):
  Clear
• Solubility (method):
  10 mg/ml acetone
• Infrared spectrum:
  Conforms to structure
• Recommended retest period:
  45 months