scanf() and syntax checking

I need to syntax check incomming queries/commands on the UART and i would like some idears on how to do it.
The syntax of the commands are as follow:

Syntax required for a query is:
@<device address><query>?;FF

Syntax required for a command is:
@<device address><command>!<parameter>;FF

Examples:
Query current baud rate: @253BR?;FF
Change baud rate to 19200: @253BR!19200;FF
where:
@ <attention character>
253 <device address>
BR? <query> (for query syntax)
BR!19200 <command>!<parameter> (for command syntax)
;FF <terminator>

Please note the termination is ;FF and not CR or LF.

Is it possible to use the scanf() function for this task?
Something like this perhaps:

scanf("@%3s%2s?;FF", adr, command);