How To Capture Detail Error Description Into Variable

Hi everybody, is anyway to capture error description into variable?

Example
executing
insert into tabMaster(col1) values(1)
select @@error

will produce output
Server: Msg 2627, Level 14, State 1, Line 1
Violation of PRIMARY KEY constraint 'PK_TabMaster'. Cannot insert duplicate key in object 'TabMaster'.
The statement has been terminated.

-----------
2627

(1 row(s) affected)

I want to capture " Violation of PRIMARY KEY constraint 'PK_TabMaster'. Cannot insert duplicate key in object 'TabMaster'."
and assign it to variable

BOL state:... All other parts of the error, such as its severity, state, and message text containing replacement strings such as object names, are returned only to the application in which they can be processed using the API error handling mechanisms


thank you