Alex Radan was struck by a Honda Civic in Charnwood Place on Friday evening.
Emergency services were called at around 6.50pm and he was taken to nearby Dumfries and Galloway Royal Infirmary, where he was pronounced dead shortly afterwards.
Police say their investigation into the crash is ongoing amid claims that Alex was hit by the car which failed to stop before returning to the scene and then leaving again minutes later.
The youngster’s parents, George Radan, 38, and wife Cristina, 37, who are originally from Romania, own a Dumfries restaurant.
A notice on the Facebook page for C&G Delights said: "Due to a tragic family incident our takeaway will be closed until further notice. Apologies to all our customers."
Sergeant Bob McNay, from Police Scotland's road policing unit, said officers investigating the tragedy wanted to view any CCTV or dashcam footage available to determine the full circumstances.
He said: "Once again, I'd like to send our most sincere condolences to Alex's family and our thoughts remain with them and all those directly affected by this tragic event.
"The investigation into this crash remains ongoing and we are asking for anyone who was in the area and witnessed the events to please come forward.
"We are also keen to speak to anyone who may have CCTV overlooking the Charnwood Place area to get in contact, as they may be able to assist our inquiries.
"If you have any information, please contact police on 101, quoting incident 3597 of April 2."