Sildenafil-d8 (piperazine-d8),neat,neat,5mg Back Catalog number: 11191.22-5MG Manufacturer: CHIRON AS Availability: In the manufacturer's stock Price on request - + Recommended 10908.12-100-IO 2,3,3',4,4',5-Hexachlorobiphenyl-2',6,6'-d3,100 µg/mL,isooctane,1mL Price on request 1741.15-K-T N-Ethylcarbazole-3-carboxaldehyde, 1000µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 7570-45-8 Price on request 31023 EPA Method 515.1 Internal Standard Price on request