1,3-Butadiene Back Catalog number: 71492 Availability: In the manufacturer's stock Price on request - + Recommended 2490.12-1G Tetra-n-propyltin, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 2176-98-9 Price on request 677991 Pyrazophos, 100 µg/ml, Toluene, 1ml Price on request 9400.19-100-ME Doxepin hydrochloride, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 1229-29-4 Price on request