Japan Pharmacist Exam Practice Questions - Japan National Pharmacist Examination (Yakuzaishi Kokka Shiken) Exam

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In proton NMR, a signal that integrates to three protons and appears as a singlet most likely represents which structural feature?

A methyl group with no neighboring nonequivalent hydrogens A methylene group split by two neighboring hydrogens An aromatic ring with five hydrogens A carboxylic acid proton coupled to a methyl group

Correct Answer:

A methyl group with no neighboring nonequivalent hydrogens

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