Internal Standard Back Catalog number: 95592 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 30222 2,4-Dichlorophenylacetic acid Price on request 72219 DL-Norepinephrine Price on request 0441.13-500-IO 2,3,6-Trimethylnaphthalene, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 829-26-5 Price on request