The complementary base of adenine, guanine, thymine and cytosine is to be listed. Concept Introduction: The adenine (A), guanine (G), thymine (T) and cytosine (C) are the nucleotides present in a DNA (deoxyribonucleic acid) strand. A base pair is a unit comprising of the two nucleotide bases. The two nucleotide bases are attached to each other with the help of hydrogen bonds and forms the DNA building block.

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Chapter 19, Problem 43E

Interpretation Introduction

Interpretation: The complementary base of adenine, guanine, thymine and cytosine is to be listed.

Concept Introduction: The adenine (A), guanine (G), thymine (T) and cytosine (C) are the nucleotides present in a DNA (deoxyribonucleic acid) strand.

A base pair is a unit comprising of the two nucleotide bases.

The two nucleotide bases are attached to each other with the help of hydrogen bonds and forms the DNA building block.

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Interpreting NMR spectra is a skill that often requires some amount of practice, which, in turn, necessitates access to a collection of NMR spectra. Beyond Labz Organic Synthesis and Organic Qualitative Analysis have spectral libraries containing over 700 1H NMR spectra. In this assignment, you will take advantage of this by first predicting the NMR spectra for two closely related compounds and then checking your predictions by looking up the actual spectra in the spectra library. After completing this assignment, you may wish to select other compounds for additional practice. 1. Write the IUPAC names for the following two structures: Question 2 Question 3 2. Predict the NMR spectra for each of these two compounds by listing, in the NMR tables below, the chemical shift, the splitting, and the number of hydrogens associated with each predicted peak. Sort the peaks from largest chemical shift to lowest. **Not all slots must be filled**

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