CREATE TABLE table_52662 ("Chemical class" TEXT, "Group" TEXT, "Formula" TEXT, "Prefix" TEXT, "Suffix" TEXT, "Example" TEXT)

Which chemical class uses the example Chloroethane (ethyl chloride)?
SELECT "Chemical class" FROM table_52662 WHERE "Example" = 'chloroethane (ethyl chloride)'
SELECT "Chemical class" FROM "table_52662" WHERE "Example" = 'chloroethane (ethyl chloride)'