91776-47-5 Fibrostatin C L-CYSTEINE, N-ACETYL-S-((5,8-DIHYDRO-1-HYDROXY-3,6-DIMETHOXY-5,8-DIOXO-2-NAPHTHA L-Cysteine, N-acetyl-S-((5,8-dihydro-1-hydroxy-3,6-dimethoxy-5,8-dioxo-2-naphthalenyl)methyl)- N-Acetyl-S-((5,8-dihydro-1-hydroxy-3,6-dimethoxy-5,8-dioxo-2-naphthalenyl)methyl)-L-cysteine