7-Hydroxy Mitragynine, 0,25mg Back Catalog number: H947910 Manufacturer: TORONTO RESEARCH CHEMICALS Availability: In the manufacturer's stock Price on request - + Recommended 82507 EPA Method 8250/8250A Cal Check BNS Price on request 3177.8-K-IO Ethyl hexanoate, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 123-66-0 Price on request 0305.17-200-T 4-Methylpyrene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 3353-12-6 Price on request