MPC-0767, a potent, selective, and orally active hsp90 inhibitor, is the L-alanine ester prodrug of MPC-3100, exhibiting enhanced chemical stability.

MPC-0767 (oral adminstration; 265 mg/kg; single dose) exhibits a improved PK property, the T max , C max , AUC and F% are 1?(h), 21562 ng/mL, 94194 h*ng/mL and 56%, respectively[1].MPC-0767 (oral adminstration; 265 mg/kg) demonstrates comparable efficacy in an N-87 xenograft tumor model, the 46% tumor size reduction with no evidence of weight loss in the study animals[1].MPC-0767 is well tolerated when administered at 252?mg/kg po (equivalent to 200?mg/kg dose of?MPC-3100)[1].