Methylhexanamine, also known as 1,3-dimethylamylamine, a dietary supplement
On 31 January 2012 it was announced by Barnet that Marshall had been provisionally suspended by the club after testing positive for the stimulant methylhexaneamine.
Jakhongir Muminov of Uzbekistan originally got the 7th place, but was disqualified after he tested positive for Methylhexanamine.