DSS (4,4-dimethyl-4-silapentane-1-sulfonic acid) is a chemical compound used in proton- and carbon-related NMR spectroscopy as a calibration standard, similar to tetramethylsilane (TMS), but with much higher water solubility. Whereas TMS is the most common NMR standard used in organic solvents such as chloroform or benzene, DSS or its sodium salt is more often used for protein experiments in water.

CAS：18173-90-5
中文别名：
英文别名：3-trimethylsilylpropane-1-sulfonic acid;4,4-Dimethyl-4-sila-pentan-1-sulfonsaeure;2,2-Dimethyl-2-silapentan-5-sulfonsaeure;3--propansulfonsaeure;2,2-dimethyl-2-silapentane-5-sulfonic acid;
分子式：C6H16O3SSi
分子量：196.34
精确质量：196.059
Psa：62.75
Logp：2.6833

密度：1.079g/cm3