Gabapentin-d4

Ethanol standard in serum,0.2g/L,serum, 1.5mL

3,3',4,5,5'-Pentachlorobiphenyl (127)

1,3-Dibromo-2,7,8-trichloro[13C12]dibenzofuran, 1.2ml x 50ug/ml, toluene