SELECT * from tblproducts where sluglink='6-aminohexyl----946--d-glucopyranoside' and (controlled IS NULL OR controlled = '' OR controlled <> '1') and structure <> '' and structure is not null and structure <> '' and structure is not null and structure <> 'NA' and structure <> 'N/A' and structure <> 'Clearsynth.png' and structure <> 'null' and structure <> 'Not Available' and structure <> 'Not Available'