What are types of loop diuretics?

Lasix/Furosemide/Bumetanide (Sulfonaminde derivative, admin PO/IV, onset of action IV 2-5 min, IM 10-20 min, PO 20-40 min, short duration (3-6 hours) Ethacrynic acid (only loop diuretic not sulfonamide derivative [phenoxyacetic acid], used in case of allergies to sulfonamide, but causes ototoxicity so rarely used)