2-Chlorobenzoic acid, analytical standard (Supelco)

2-Hydroxyacetophenone, analytical standard

Nalidixic acid-(ethyl-d5), analytical standard

Salicylic acid-(phenyl-13C6), analytical standard

Caffeic acid 1,1-dimethylallyl ester, analytical standard

4-Methylmethcathinone hydrochloride, analytical standard

Oxolinic acid-(ethyl-d5), analytical standard

1H-Benzotriazole-ring-d4 in Acetone, analytical standard

1H-Benzotriazole-ring-d4 in Acetone, analytical standard

Metformin-(dimethyl-d6) hydrochloride, analytical standard