Methadone/Methaqualone/Propoxyphene Back Catalog number: 96626 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 97389 Radiello Mix #1 Price on request 63196 2,2',3,3',4,4',5,6'-Octachlorobiphenyl (196) Price on request 97935 Surrogate Standard Price on request