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Shown below is the structure of Crestor® (rosuvastatin), a medication used to reduce cholesterol. Which term describes the double bond indicated by the arrow?

Which of the following is 3-ethyl-2,4,6-trimethyloctane?

Select the word or phrase that will best complete the following sentence: (atomic, electronegativity, isomers, sp, sp2, sp3, stronger, weaker, Pi, sigma, hybridization, inductive, resonance, conjugated base, conjugated acid, higher, lower, active, electrophilic, nucleophilic, hydrophobic, hydrophilic, reactive, axial, conformations, equatorial, stereoisomers, steric, torsional, angle, alkanes, cycloalkanes, ring flip, element.)   ……………. strain is an increase in energy caused by eclipsing interactions. Complete word/phrase and correct spelling (verbatim) is required. No partial credit.

What is the specific rotation of pure (S)-carvone if a sample of (R)-carvone of 85% ee has a specific rotation of −52?

What is the relationship between the following pair of structures?

If a sample of carvone gives a specific rotation of 0 and the specific rotation of pure (R)-carvone is −61, what is the configuration of the unknown sample?

What are the configurations of carbons 2 and 3 in the Fischer projection below?                                                                        

How many chirality centers does limonene have?

Which of the following is the highest energy conformation of the following compound looking down the indicated bond?

Which of the following are gauche conformers?