PROPAZINE (RING-13C3, 99%) 100 UG/ML IN METHANOL…

OCTAMETHYLCYCLOTETRASILOXANE "D4" (OCTAMETHYL-13C8,…

7H-DIBENZO[C,G]CARBAZOLE (D12, 98%) 50 UG/ML IN TO…

CHLORPYRIFOS ( 97% CHEMICAL PURITY) (DIETHYL-D10, 9…

(-)-MENTHOL (1,2,6,6-D4, 98%)…

URETHANE (ETHYL CARBAMATE) (ETHYL-D5, 98%)…

MALATHION (D10, 99%) 100 UG/ML IN NONANE…

TRIFLURALIN (DI-N-PROPYL-D14, 98%) 100 UG/ML IN NO…

O-TERPHENYL (D14, 98%)…

O,O-DIMETHYL DITHIOPHOSPHATE, POTASSIUM SALT (DIMET…