Examlex
Which of the following pieces of technology did Tang China alone among the rest of East Asia import from the Middle East?
Epimers
Stereoisomers that differ in configuration at exactly one stereogenic center and have the same molecular formula.
Asymmetric Carbons
Carbon atoms bonded to four different groups, leading to chirality or "handedness" in molecules, essential in stereochemistry.
α-D-Ribopyranose
An aldopentose sugar in the pyranose form where the α-configuration at the anomeric carbon is specific to the D-ribose structure.
Ordinal Data
A type of categorical statistical data type in which the order of the values is significant but the difference between each one is not necessarily uniform.
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