ketipic

from The Century Dictionary.

• Noting an acid, a colorless amorphous compound, HOCOCH₂CO-COCH₂COOH, prepared by the action of diethyl oxalate on two equivalents of ethyl dichloracetate. It decomposes at 150° C., without melting, into carbon dioxid and diacetyl. Also called diacctyl-dicarboxylic acid.