MySQL Error Occurred

Error Message:
1064: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'AND manufacturer_id='7' order by eanupcCode' at line 1

SQL:
select distinct(eanupcCode) from inventory where eanupcCode != '' AND cat_id>0 AND cat_id= AND manufacturer_id='7' order by eanupcCode