Stable Isotope Labeled (SIL) peptides catalog

Stable Isotope Labeled peptides (SIL peptides), also known as heavy peptides, are made of heavy amino acids (AA). The latter are derived from natural amino acids by substitution of certain atoms with their heavy isotope variants i.e. ¹³C, ¹⁵N and ²H for ¹²C, ¹⁴N and ¹H respectively.