Piperacillin, 1g Back Catalog number: P479950 Manufacturer: TORONTO RESEARCH CHEMICALS Availability: In the manufacturer's stock Price on request - + Recommended 22003 EPA Method 8240A Internal Standard Price on request 8481.22-K-AN Diltiazem hydrochloride,1000 µg base/mL,acetonitrile,1mL, Price on request 11441.27-100-IO Tris(3-isopropylphenyl) phosphate,100 µg/mL,isooctane,1mL Price on request