Dimethyl 2,2,6,6-Tetramethyl-3,5-dioxo-4-oxaheptanedioate

The title compound, C₁₂H₁₈O₇, crystallizes with the anhydride moiety non-planar and in the trans,trans conformation. The stability of this compound suggests that quarternary C atoms attached to carbonyl C atoms have a stabilizing influence on acyclic anhydride compounds.

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