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Izomeria compusilor organici

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a<br />

X<br />

c d<br />

O<br />

N<br />

Chiralitatea centrală<br />

b<br />

H<br />

H3C C2H5 aminoxozi<br />

X = C, Si, N + , P + , aminoxizi, sulfoxizi<br />

H<br />

CHO<br />

R 1<br />

S<br />

CH2OH aldehida glicericã D(+)<br />

R 2<br />

O sau Si<br />

R 1<br />

sulfoxizi<br />

OH H<br />

O<br />

COOH<br />

CH 3<br />

R 2<br />

OH<br />

acidul lactic D (+)<br />

HO<br />

COOH<br />

CH 3<br />

H<br />

acidul lacticD(-)<br />

enantiomeri

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