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L(-)-Tryptophan 99%
L(-)-Tryptophan 99%
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L(-)-Tryptophan 99%

Specification Test Results

  • Appearance:
    White to yellowish-white Crystalline powder
  • Infrared spectrum:
    Conforms
  • Loss on drying:
    ≤0.5 % (1 g, 105°C)
  • Specific optical rotation:
    -29.0° to -33.0° (20°C, 589 nm) (C=1, H2O)
  • Titration with HClO4:
    98.5 to 101.5 % (On dry substance)

Specification Test Results

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