  We present analytic expressions in terms of polylogarithmic functions for all
three families of planar two-loop five-point Master Integrals with one
off-shell leg. The calculation is based on the Simplified Differential
Equations approach. The results are relevant to the study of many $2\to 3$
scattering processes of interest at the LHC, especially for the leading-color
$W+2$ jets production.
