The 31-year-old was handed a backdated 18-month ban in April. It is due to end on Dec. 20, but CAS have said the sprinter has requested his suspension be reduced to just three months because of the nature of the offence.
Powell tested positive for a stimulant, oxilophrine, at the 2013 national championships. He said at the time of his ban that the stimulant - which is only banned during competition - had been found in a legal supplement he was taking.
A date for an appeal hearing has not yet been set, but Powell, along with training partner Sherone Simpson who was given the same ban, have been invited to file written submissions to CAS.
The deadline for athletes wishing to compete at the Commonwealth Games is June 11, six weeks before the Games get underway on July 23.
- Sports & Recreation