To suspend temporarily the duty on certain heterocyclic compounds.

Amends the Harmonized Tariff Schedule of the United States to suspend, through December 31, 1996, the duty on: (1) 3-dodecyl-1-(1,2,2,6,6-tetramethyl-4-piperidinyl)-2,5-pyrrolidinedione; (2) 3-dodecyl-1-(1,2,2,6,6-pentamethyl-4- piperidinyl)-2,5-pyrrolidinedione; (3) peperidine, 1-acetyl-4-(3-dodecyl-2,5-dioxo-2-pyrrolidinyl)-2,2,6,6-tetramethyl; and (4) 3-dodecyl-1- (2,2,6,6-tetramethyl-4-piperidinyl) pyrrolidine-2,5-dione, octadecanoate.