Help Needed to add Hyphen in REGEXP_REPLACE

Hi All,
I need a help to add hyphen in my select criteria so that it does not filter the hypen.
I am using below REGEXP_REPLACE to get my output, everything is fine now except the Hyphen (-) character is not recognized.
select REGEXP_REPLACE('abcd-efgh123{}$(),', '[^[a-z,A-Z,0-9,(,),{,},_,$,.,'',[:space:]]]*','') from dual;
Can you please help?
Thanks

The hyphen has a special meaning inside a regular expression. You can use if you make clear that the extended meaning is not possible in this case.
example
with testdata as (select 'A-C' txt from dual union all
                  select 'X-12' txt from dual union all
                  select '1''2' txt from dual union all
                  select 'ab#' txt from dual union all
                  select '()' txt from dual union all
                  select 'a b*~' txt from dual union all
                  select 'ab' txt from dual union all
                  select 'abcd-efgh123{}$(),' txt from dual
select txt
      ,REGEXP_REPLACE(txt, '[^[a-zA-Z0-9(){}_$.''[:space:]-]]*','') keep_chars
      ,REGEXP_REPLACE(txt, '[[a-zA-Z0-9(){}_$.''[:space:]-]]*','') remove_chars
from testdata;
TXT     KEEP_CHARS     REMOVE_CHARS
A-C     A-C
X-12     X-12
1'2     1'2
ab#     ab     #
a b*~     a b     *~
ab     ab
abcd-efgh123{}$(),     abcd-efgh123{}$()     ,I removed the comas. In case you want that char also to be removed just add it somewhere. It is not used as a separator in this specific case.

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