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Esters

 

Nomenclature-Esters (R-CO-O-R') are named as alkyl derivatives of carboxylic acids. The alkyl (R') group is named first (the carbon chain from the alcohol).  The R-CO-O part is then named as a separate word based on the carboxylic acid name, with the ending changed from -oic acid to -oate.

**to see names highlight the box next to the structure

NAMES Condensed STRUCTURE
methyl pentanoate CH3CH2CH2CH2COOCH3
methyl butanoate CH3CH2CH2COOCH3
methyl propanoate CH3CH2COOCH3
methyl ethanoate CH3COOCH3
ethyl pentanoate CH3CH2CH2CH2COOCH2CH3
propyl pentanoate CH3CH2CH2CH2COOCH2CH2CH3
butyl pentanoate CH3CH2CH2CH2COOCH2CH2CH2CH3
pentyl pentanoate CH3CH2CH2CH2COOCH2CH2CH2CH2CH3
hexyl pentanoate CH3CH2CH2CH2COOCH2CH2CH2CH2CH2CH3

 

NAMES Expanded STRUCTURE
propyl propanoate
ethyl propanoate
ethyl ethanoate
methyl ethanoate

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