L-色氨酸-d5是必需氨基酸色氨酸的标记氘代同位素，打算用作光谱学中的内标。 应用： L-色氨酸-（吲哚-d5）可用于： •中子散射的生物物理研究。 • 作为研究低分子量部分抗炎活性的内标物。 • 使用 LC-MS/MS 进行食品中微量营养素和营养成分的结构解析。 L-Tryptophan-d5 is a labelled and deuterated isotope of the essential amino acid Tryptophan, intended for use as an internal standard in spectrometry. Application： L-Tryptophan-(indole-d5) is used • in biophysical study for neutron scattering. • as an internal standard for the investigation of anti-inflammatory activity of low molecular weight fractions. • in structural elucidation of micronutrients and nutraceutical components presence in food stuffs using LC-MS/MS.