data nicholas._21603_;
modify nicholas._21603_;
/* here are two variants */
/* first - if your task is only to search for a numbers */
if index(Combo,"23601") > 0 then remove;
/* if you need to pay attention to a character case, e.g. "asdASD" */
/* consider using find function */
/* if find(Combo, "asdASD", "i", 0) > 0 then remove; */
run;