JB -11 NSC - 249008 SMILE String: n1c(nc(c2c1ccc(c2C)CNc1cc(c(c(c1)OC)OC)OC)N)N Chemical Name: 5-Methyl-6-[[(3,4,5- trimethoxyphenyl)amino]methyl]-2,4-quinazolinediamine, acetate CAS Registry Number: 52128-35-5 Molecular Formula: C19H23N5O3 M.W.:429.5 Approximate Solubility: (mg/mL) Water 1 - 2 pH 4 Acetate buffer < 1 pH 9 Acetate buffer < 1 0.1NHC1 1 - 5 0.1 N NaOH < 1 Methanol 12 - 15 95% Ethanol 1 - 5 10% Ethanol 1 - 3 Dimethylacetamide 10 - 15 Dimethylsulfoxide approimately 100 Stability: Bulk: A sample stored at 60 °C for 30 days showed no decomposition (UV, HPLC). Solution: A solution in 5% methanol (0.5 mg/mL) showed no decomposition after 9 days (UV). A solution in 5% dimethylacetamide /pH 4 acetate buffer showed no decomposition after 48 hours(HPLC). Ultraviolet Absorption: (0.1 N NaOH) max E 237 ±2nm 46,970 - 47,922 341 ±2nm 4,410 - 4,680 High Performance Liquid Chromatography: Column: pondapak C 300 x 3.9 mm i.d. Mobile Phase: CH3CN/3% acetic acid in water, 20/80, v/v Flow Rate: 0.8 mL/min Detection: UV at 254 nm Sample Preparation: 0.5 mg/mL in methanol containing internal standard Internal Standard: 0.35 mL/mL acetophenone in methanol Retention Volume: 6.4 mL (NSC-249008) 9.1 mL (I.S.)