Why do optical isomers always come in pairs?
Why do most people have LEFT as well as RIGHT hands?
It is true that most proteins and sugars are handed, so the question is a little nonsequitir. Optical isomers, which are non-superposable mirror images, necessarily have left- and right-handed antipodes. Of course, only one isomer may be encountered naturally. It has only been the last 20 to 30 years or so that chemists have developed the synthetic methodology to synthesize the isomer that is not encountered naturally.
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Optical isomers result from asymmetry, leading to mirror-image structures. Pairs exist due to chiral centers producing enantiomers with distinct spatial arrangements.
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
- What is the difference between an enantiomer and a diastereomer ?
- How are meso compounds drawn?
- How do diastereomers differ from optical isomers?
- How do you identify diastereomers?
- How many chiral centres in the following molecule? 

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