Napthol Yellow Back Catalog number: 72598 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 95421 Glycerin Price on request 9388.12-100-IO 2,2',5,6'-Tetrachlorobiphenyl, 100 µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 41464-41-9 Price on request 3537.22-K-IO 1,4-Bis(2-ethylhexyl)benzene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 87117-22-4 Price on request