... -beta,delta-dihydroxy-2,6-dimethyl-8-(2-methyl-1-oxobuty;2-methyl-,1,2,3,7,8,8a-hexahydro-3 ... -oxo-2h-pyran-2-yl]ethyl]-1-naphthalenyl(s)-2-methyl-butyrate CAS: 75330-75-5 MF: C24H36O5 MW: 404.54 ... CAS DataBase Reference) EPA Substance Registry System Butanoic acid, 2-methyl-, (1S,3R,7S,8S,8aR)-1,2,3,7, 8 ... 2-yl]ethyl]-1-naphthalenyl ester, (2S)-(75330-75-5) High Quality Lovastatin (CAS No.:75330-75-5)