aldohexose
Definition
Noun: A monosaccharide sugar containing six carbon atoms and possessing an aldehyde functional group. It is a type of simple sugar and a sub-class of hexoses.
Usage
The term is used in scientific contexts, particularly in biochemistry and organic chemistry, to classify and describe specific sugar molecules based on their chemical structure. - Glucose is the most common and biologically important aldohexose. - The experiment aimed to differentiate between various aldohexose isomers.
Advanced Usage
- Stereochemistry: Aldohexoses have multiple chiral centers, leading to several stereoisomers (e.g., D-glucose, D-galactose, D-mannose). The "D-" or "L-" prefix indicates the configuration around the highest-numbered chiral carbon.
- D-Glucose and D-galactose are both aldohexoses but differ in the spatial arrangement of their hydroxyl groups.
Variants and Related Words
- Hexose (n): Any monosaccharide with six carbon atoms. An aldohexose is a specific type of hexose.
- Aldose (n): Any monosaccharide containing an aldehyde group. An aldohexose is an aldose with six carbons.
- Ketohexose (n): A monosaccharide sugar with six carbon atoms and a ketone group (e.g., fructose), contrasting with an aldohexose.
Synonyms
- Monosaccharide: A simple sugar that cannot be hydrolyzed to a simpler sugar. (This is a broader category.)
- Simple sugar: A common term for monosaccharides.
Related Phrases / Terms
- Reducing sugar: Most aldohexoses are reducing sugars due to the presence of the free aldehyde group, which can be oxidized.
- The test confirmed the solution contained a reducing sugar, such as an aldohexose.
- Pyranose form: The cyclic, six-membered ring structure that aldohexoses like glucose typically adopt in solution.
- In aqueous solution, the aldohexose glucose exists primarily in the pyranose form.
Noun
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a monosaccharide sugar having six carbon atoms and an aldehyde group
