1-(3,4-Dichlorophenyl)-3-methylurea, 100 µg/ml, A

7,8-Dibromo-1,2,3,4,11,11-hexachloro1,4,4a,5,6,7,8,9,10,10a-decahydro-1,4-methanobenzocyclooctane,50 µg/mL ,toluene,1mL,

2,6-Dichlorobiphenyl (10)

N-Nitroso-D,L-proline-d7