Purity (TLC) (1): CHCl3: MeOH: AcOH 90: 8: 2Purity (TLC) (2): Hexane: AcOEt: AcOH 20: 10: 1HPLC Conditions: Vydac C18, 250 x 4.6 mm, 5 µm; A = 0.1% TFA in water: acetonitrile 98: 2; B = 0.1% TFA in acetonitrile: water 98: 2; Flow: 1.0 ml/ min, T= amb; 30% B to 100% B in 20 min