Butyric acid-1-¹³C

丁酸-1-¹³C

Cell Free Amino Acid Mixture-¹³C,¹⁵N

DL-Alanine-2-d

DL-丙氨酸-2-d

Eicosane-d₄₂

正二十烷-d₄₂

γ-Muricholic acid-2,2,3,4,4-d₅

Indoxyl-3a,4,5,6,7,7a-¹³C₆ sulfate potassium salt

m-Xylene-(dimethyl-¹³C₂)

间-二甲苯-二甲基-¹³C₂

p-Xylene-(dimethyl-¹³C₂)

p-Xylene-α,α′-¹³C₂

Rhenium disulfide

Sodium taurocholate-2,2,4,4-d₄ solution