Methastyridone

Methastyridone is a centrally acting stimulant, whose mode of action differs from that of classical agents such as d-amphetamine.

About MK-202, the following is noted:

Thus, it would appear that MK-202 has properties that make it more suitable as an antidepressant than amphetamine, even though amphetamine was a very popular choice of antidepressant and the time that the above quote was taken.