Greetings readers!
Dextrorotary or levorotatory and D or L forms - We hear these terms, especially, in biochemistry of chiral carbon atoms.
Now, I always thought in D-glucose, the D is for dextrorotary. But I was wrong.
The denotion dextro/levo and D/L is completely different and unrelated to each other.
The denotion D or L is based on how a sugar molecule at its C1 position is related to D-glyceraldehyde. The denotion devo or levo based on how it changes the direction of polarized light to right or left respectively.
Coincidentally, yes, D-glucose is also dextrorotatory. But a striking and an important example is that D-fructose is strongly levorotatory.
Dextrorotary or levorotatory and D or L forms - We hear these terms, especially, in biochemistry of chiral carbon atoms.
Now, I always thought in D-glucose, the D is for dextrorotary. But I was wrong.
The denotion dextro/levo and D/L is completely different and unrelated to each other.
The denotion D or L is based on how a sugar molecule at its C1 position is related to D-glyceraldehyde. The denotion devo or levo based on how it changes the direction of polarized light to right or left respectively.
Coincidentally, yes, D-glucose is also dextrorotatory. But a striking and an important example is that D-fructose is strongly levorotatory.
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