Zamanci abu ne mai nauyin geometric wasu kwayoyin da ions. Wani kwayoyin kwayoyin / ion ba shi da wani abu a kan madubi. Kasancewa da cibiyar motsa jiki na asymmetric yana daya daga siffofin tsarin da yawa da ke haifar da chiral cikin kwayoyin halitta da kwayoyin halitta.
Ana ba da izinin kowane ɗayan adantiomers a matsayin dama ko hagu. Zamanci shine muhimmiyar mahimmanci a lokacin da ake magana game da stereochemistry a cikin ilmin kwayoyin halitta da ma'adanai. Manufar wannan muhimmiyar mahimmanci ne saboda yawancin kwayoyin halitta da magungunan ƙwayoyin magani sune chiral.
Yawancin kwayoyin halitta masu ilimin halitta sune chiral, ciki har da amino acid na al'ada (siffofin ginin gina jiki) da sukari. A tsarin tsarin ilimin halittu, yawancin wadannan mahadi sune nau'i nau'i daya: yawancin amino acid sune (l) da sugars ne dextrorotatory (d). Anyi amfani da sunadarin sunadarin amino acid na al'ada ta al'ada kuma an sani su sunadaran hagu; yawancin amino acid din da suka fi dacewa suna samar da sunadaran hagu.

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