August 2019 NY Regents Chemistry Exam
45 Given the formula for a compound:
What is the name of this compound?
(1) methyl butanoate
(2) methyl butyl ether (3) pentanone (4) pentanoic acid
Solution: We need to take a look at Table R on the Reference table which lists the classes of organic compounds together with their functional groups. The functional group here is that of an ester. The example of the molecule given in Table R for an ester is almost the same as the molecule in our question, except the parent chain is one carbon longer. The ending for an ester is "oate".
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