Bulk: Bulk samples stored at room temperature for 30 days showed no TLC or HPLC decomposition as indicated by UV absorption The bulk compound stored at 60 oC for three weeks also showed no decomposition After four weeks very minor decomposition was detected by TLC Ultraviolet Absorption : (MeOH) max = 227 2nm E = 28,500 - 30,900 High Performance Liquid Chromatography : Column: IBM ODS, 5um 46 x 250mm Mobile Phase: 63% MeOH/37% water Flow Rate: 1.0 mL/min Detection: UV at 230 nm Sample Preparation: Dissolve approximately 6 mg sample in 10 mL methanol Mix 1 mL of this solution with 1 mL of internal standard solution Internal Standard: 20 mg Paraben in 25 mL methanol Retention Volume: 19.3 mL (NSC 125973) 7.7 mL (I.S.)