Tris (hydoxymethyl) aminomethane [14C]

Trypsin inhibitor [methyl-14C] methylated from soybean

Tryptamine bisuccinate [side chain-2-14C]

Tryptophan, D-[side chain-3-14C]

Tryptophan, DL-[side chain-3-14C]

Tryptophan, L-[side chain-1-14C]

Tryptophan, L-[side chain-3-14C]

Hydroxyphenylethylamine [7-14C]

Hydroxyphenylethylamine [8-14C]

Tyrosine, D-[1-14C]

Tyrosine, DL-[1-14C]

Tyrosine, L-[1-14C]

Tyrosine, L-[14C(U)]

UC781 [prenyl-1-14C]

10-Undecenoic acid [1-14C]

Undecylenoyl phenylalanine [ring-14C(U)]

Uracil [2-14C]

Uracil [6-14C]

Urea [14C]

Urea [14C]