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Chiffre devant R/S


Mric02
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Bonjour, j'ai bien compis comment determiner la config R /S d'une molécule avec un 1 seul C, mais quand il y a plusieurs C asymétriques, on met comme résultat un chiffre devant le R ou le S ( ex : 2S 3R ) et je ne comprend pas d'où le chiffre vient 

 

merci beaucoup :))

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Heyyyyyyyyyyyy

 

C'est le numero de ton carbonne dans la mollecule image042.gif par exemple la le carbonne 5 est asymetrique sa sera donc du 5 R ou 5S en fonction 

 

 

Bon courage 

Edited by davidd
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