UCMR 537 Custom Mix 3

N,N-Dimethylguanidine, neat, Solvent-neat, Unit 250mg, # of units-1, Cas.no. 6145-42-2

Endosulfan-II-d4, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 203716-99-8

1,2,3,4,6,8,9-Heptachloro[13C12]dibenzofuran, 1.2ml x 50ug/ml, toluene