WS-9558A

Napyradiomycin A

napyradiomycin A1

3,4a-Dichloro-6,8-dihydroxy-3,4,4a,10a-tetrahydro-2,2-dimethyl-10a-(3,7-dimethyl-2,6-octadienyl)-2H-naphtho[2,3-b]pyran-5,10-dione