CREATE TABLE table_52665 ("Chemical class" CLOB, "Group" CLOB, "Formula" CLOB, "Prefix" CLOB, "Suffix" CLOB, "Example" CLOB)

What prefix has chemical class Iodoalkane?
SELECT "Prefix" FROM table_52665 WHERE "Chemical class" = 'iodoalkane'
SELECT "Prefix" FROM "table_52665" WHERE "Chemical class" = 'iodoalkane'