Sildenafil-d8 (piperazine-d8),100 µg/mL,MeOH,1mL

2,3,4,6-Tetrabromophenol, 1.2ml x 100ug/ml, toluene

N-2,4-Dimethylphenyl-N'-methylformamidine HCl, 10.

Carbaryl