What is the monoisotopic mass of threonine? Given data: Mass of the most abundant isotope of Carbon (C°)=12.0000, Mass of most abundant isotope of Hydrogen (H°)=1.0078, Mass of most abundant isotope of Oxygen (O°)=15.9949, Mass of most abundant isotope of Nitrogen (N°)=14.0031.

Correct Answer: 101.047
The monoisotopic mass of threonine is 101.047 The chemical formula of threonine is C4H7O2N Formula: Monoisotopic mass= Hence, the monoisotopic mass of threonine=4 x (12.000) + 7 x (1.0078) + 2 x (15.9949) + (14.0031) monoisotopic mass of threonine = 101.047.