TPH Internal Standard Back Catalog number: 92636 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 676679 o-Dianisidine, 100mg Price on request 0685.29-100-IO (24S)-24-Ethyl-3,5-cyclocholest-22-ene, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. Price on request 1087.18-100-TX5 Benz[a]anthracene-d12, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-5, Cas.no. 1718-53-2 Price on request