Method 1640Mix A Back Catalog number: 52146 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9702.13-10MG Phenylacetylglutamine, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. Price on request 683442 3-Nitrophenyl disulfide, 1000mg Price on request C335052 Chlorhexidine-d8 Dihydrochloride, 1mg Price on request