Appearance Colorless Powder Infrared spectrometry Conforms to Structure Purity(HPLC) ≥98.0% Purity(Neutralization titration) ≥98.0% Melting point 175°C - 180°C solubility in EtOH Clear to Hazy ,50 mg/ml of EtOH Specific rotation [α]20/D -12.0 ～ -15.0°(C=1，MeOH)
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