有些東西不見得新不如舊! 看完你就明白了 淚
IUPAC Gold Book - endo, exo, syn, antiIf the group is orientated towards the highest numbered bridge (z bridge, e.g. C-7 in example below) it is given the description exo; if it is orientated away from the highest numbered bridge it is given the description endo. If the group is attached to t...
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