E-64d (2S,3S)-trans-Epoxysuccinyl-L-leucylamido-3-methylbutane Ethyl Ester Loxistatin White solid. A cell-permeable, irreversible inhibitor of cysteine proteases. Similar to E-64 (Cat. No. 324890) but devoid of charged groups. Reported to inhibit calpain-1 activation. The inhibitory activity of EST has been attributed to E-64c, the free acid formed by hydrolysis of the ester in vivo. Used in animal models of muscular dystrophy. Purity: ≥98% by TLC. RTECS RR0404300, CAS 88321-09-9. Ref.: Inomata, M., et al. 1996. Arch. Biochem. Biophys. 328, 129. Mehdi, S. 1991. Trends Biochem. Sci. 16, 150. McGowan, E.B., et al. 1989. Biochem. Biophys. Res. Commun. 158, 432. Tamai, M., et al. 1987. J. Pharmacobiodyn. 10, 678. Komatsu, K., et al. 1986. Exp. Neurol. 91, 23. Tamai, M., et al. 1986. J. Pharmacobiodyn. 9, 672. R: 36/37/38; S: 26-36 |