Atrazine-desethyl-desisopropyl-2-hydroxy, analytical standard (Supelco)

Ammelide, analytical standard

trans-2-Pentene, analytical standard (Supelco)

Amitriptyline metabolite, (±)-E-10-hydroxylated-, analytical standard

L-Histidine hydrochloride 100 mM amino acid in 0.1 M HCl, analytical standard

Cefuroxime Axetil, analytical standard

Acetaminophen-d4 (major), analytical standard

Malvidin chloride, analytical standard

Dulcoside A, analytical standard

Alcohol Determination-Alcohol 2000 µg/mL in Methanol, analytical standard (Supelco)