|Title||»||Small molecules: users want to import m/z values, not masses|
The Insert Transitions dialog was in terms of masses, but users looked right through that and saw mz, resulting in this kind of confusion:
""Insert custom molecule" entry table box asks for precursor and product m/z, but treats the m/z entry as a mass instead and divides by the entered charge when populating the transition list.
Mass limit of 1000 for precursors can conflict with m/z specification (i.e. a precursor of mass 1500 in the +3 charge state cannot be entered without specifying 500 in the precursor m/z column and a charge of 1 in the precursor charge column).
I find that mass is deducted when I specify a monoisotopic mass: a precursor of 500.300 is displayed in the viewer as 500.2989, a transition entered as 656.900 is displayed as 656.89945142009."