O,O-Dimethylthiophosphate-13C2, sodium salt

(+/-)-Citalopram-d4 hydrobromide (4-fluorophenyl-d4), 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 1219803-58-3

Acetaminophen-d4 (Paracetamol-d4),100 µg/mL,MeOH,1mL

Total Phosphorus (P)