can't read?
Diacetone alcohol is a chemical compound with the formula CH3C(O)CH2C(OH)(CH3)2, sometimes called DAA.
D 1330 (OTTO) Diacetone alcohol, 98% Cas 123-42-2 - used in cellulose ester lacquers, particularly of the brushing type, where it produces brilliant gloss and hard film and where its lack of odor is desirable.