NAT.METHYL CYCLOPENTENOLONE PRODUCT NAME NAT.METHYL CYCLOPENTENOLONE SYNONYM NAT.2-HYDROXY-3-METHYL-2-CYCLOPENTENONE CODE 3558 CAS Nº 765-70-8 FEMA Nº 2700 EINECS 201-303-2 FORMULA C6 H8 O2 MOLECULAR WEIGHT 112,00