chem !!! 急

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2010-11-07 23:03:58 補充：
An simple ester is name as alkyl alkanoate where "alkyl" represents the alcohol part and "alkanoate" represents the alkanoic acid part. For example, the alcohol part in the ester in CH¬3COOCH3 is methanol and the alkanoic acid part is ethanoic acid, and thus the ester is named as methyl ethanoate.

2010-11-07 23:13:05 補充：
The given compound is an ester. The name "propane-1,2,3-triyl" tells us that the alcohol part of the ester is propane-1,2,3-triol (CH2OH-CHOH-CH2OH) which can form 3 ester linkages. The name "triethanoate" tells us that the 3 alkanoic acid parts of the ester are ethanoic acid (CH3COOH).

2010-11-07 23:13:16 補充：
The 3 ester linkages are formed by dehydration of the tri-ol and 3 ethanoic acid molecules.

propane-1,2,3-triyl triethanoate or propane-1,2,3-triyl triacetate:

HOOCH2CH(OOH)CH2OOH