. 2018 Apr 13;410(14):3337–3348. doi: 10.1007/s00216-018-1017-7

Table 2.

Expressions for isotope interference correction of ribulose 5-phosphate (Rl5P), a metabolite with 5 carbons in the backbone and 16 carbon atoms and 5 silicon atoms, both being naturally distributed, to be corrected for.

Isotope-inference-corrected area of M+ n isotopologue	Expression for correction
A ₀	A ₀
$A_{1_{corr}}$	A₁-(5b×A₀)-(16c×A₀)
$A_{2_{corr}}$	A₂-(5a×A₀)-(10b²×A₀)-(5b× $A_{1_{corr}}$ )-[(16c×5b)×A₀]-(16c $\times A_{1_{corr}}$ )-(120c²×A₀)
$A_{3_{corr}}$	A₃-(20ab×A₀)-(5a $\times A_{1_{corr}}$ )-(10b³×A₀)-(10b² $\times A_{1_{corr}}$ )-(5b $\times A_{2_{corr}}$ )-[(16c×5a)×A₀]-[(16c×10b²)×A₀]-[(16c×5b)× $A_{1_{corr}}$ ]-(16c× $A_{2_{corr}}$ )-[(120c²×5b)×A₀]-(120c²× $A_{1_{corr}}$ )-(560c³×A₀)
$A_{4_{corr}}$	A₄-(20ab× $A_{1_{corr}}$ )-(30ab²×A₀)-(10a²×A₀)-(5a× $A_{2_{corr}}$ )-(5b⁴×A₀)-(10b³× $A_{1_{corr}}$ )-(10b²× $A_{2_{corr}}$ )-(5b× $A_{3_{corr}}$ )-[(16c×20ab)×A₀]-[(16c×5a)× $A_{1_{corr}}$ ]-[(16c×10b³)×A₀]-[(16c×10b²)× $A_{1_{corr}}$ ]-[(16c×5b)× $A_{2_{corr}}$ ]-(16c× $A_{3_{corr}}$ )-[(120c²×5a)×A₀]-[120c²×10b²)×A₀]-[(120c²×5b)× $A_{1_{corr}}$ ]-(120c²× $A_{2_{corr}}$ )-[(560c³×5b)×A₀]-(560c³× $A_{1_{corr}}$ )-(1820c⁴×A₀)
$A_{5_{corr}}$	A₅-(b⁵×A₀)-(30a²b×A₀)-(20ab× $A_{2_{corr}}$ )-(20ab³×A₀)-(30ab²× $A_{1_{corr}}$ )-(10a²× $A_{1_{corr}}$ )-(5a× $A_{3_{corr}}$ )-(5b⁴× $A_{1_{corr}}$ )-(10b³× $A_{2_{corr}}$ )-(10b²× $A_{3_{corr}}$ )-(5b× $A_{4_{corr}}$ )-[(16c×20ab)× $A_{1_{corr}}$ ]-[(16c×30ab²)×A₀]-[(16c×10a²)×A₀]-[(16c×5a)× $A_{2_{corr}}$ ]-[(16c×5b⁴)×A₀]-[(16c×10b³)× $A_{1_{corr}}$ ]-[(16c×10b²)× $A_{2_{corr}}$ ]-[(16c×5b)× $A_{3_{corr}}$ ]-(16c× $A_{4_{corr}}$ )-[(120c²×20ab)×A₀]-[(120c²×5a)× $A_{1_{corr}}$ ]-[(120c²×10b³)×A₀]-[(120c²×10b²)× $A_{1_{corr}}$ ]-[(120c²×5b)× $A_{2_{corr}}$ ]-(120c²× $A_{3_{corr}}$ )-[(560c³×5a)×A₀]-[(560c³×10b²)×A₀]-[(560c³×5b)× $A_{1_{corr}}$ ]-(560c³× $A_{2_{corr}}$ )-[(1820c⁴×5b)×A₀]-(1820c⁴× $A_{1_{corr}}$ )-(4368c⁵×A₀)