Select the statements that correctly identify which group is cited as a prefix (not the suffix) in the named compound.

AIn $HS - CH X_{2} - CH X_{2} - OH$ the thiol is cited as the prefix sulfanyl.
BIn $CH X_{3} - CH (NH X_{2}) - CH X_{2} - OH$ the amino group is a prefix.
CIn $CH X_{3} - CO - CH X_{2} - CHO$ the ketone is cited as the prefix oxo.
DIn $CH X_{3} - CO - CH X_{2} - CH X_{2} - OH$ the ketone is a prefix and -ol is the suffix.

Answer: A, B, C

The order is aldehyde > ketone > alcohol > thiol > amine. In 2-aminopropan-1-ol the amine is a prefix (true). In 3-oxobutanal the ketone becomes oxo (true). In 2-sulfanylethan-1-ol the thiol is a prefix, the alcohol being senior (true). In

CH X_{3} COCH X_{2} CH X_{2} OH

the ketone is senior, so it is 4-hydroxybutan-2-one and the OH is the prefix (false).

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Select the statements that correctly identify which group is cited as a prefix (not the suffix) in the named compound.

Answer: A, B, C

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