Examlex
Which of the following is the most expensive of all the spices?
Racemic Alanine
A mixture of equal parts of the D- and L-enantiomers of alanine, making it optically inactive due to the internal compensation of optical activity.
Acetaldehyde
A volatile, colorless, and flammable liquid organic compound, used as an intermediate in the synthesis of various chemicals.
3-Methylthiopropanal
An organic compound characterized by a three-carbon aldehyde functional group attached to a sulfur atom-containing methyl group.
Methionine
An essential amino acid that plays a role in many cellular processes, such as initiating protein synthesis and being a source of sulfur.
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