ace·to·ace·tyl
| \ ¦a-sə-(ˌ)tō-ə-ˈsē-tᵊl, ə-ˌsē-tō-, -ˈa-sə-tᵊl \
plural -s
Definition of acetoacetyl
: the radical CH3COCH2CO− of acetoacetic acid
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Merriam-Webster unabridged
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Time Traveler for acetoacetyl
The first known use of acetoacetyl was in 1900
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