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Periodicities of the hydroxyl oxygen atoms on the growing faces of methyl α-d-mannopyranoside (MDM) crystals. (A) The hydroxyl oxygen atoms (O5) show repeat distances of 9.263 Å on the (001) face along a axis. (B) The hydroxyl oxygen atoms (O3) have repeat distances of 9.978 Å on the (010) face along c axis. (C) The hydroxyl oxygen atoms (O2) have repeat distances of 9.369 Å on the face of (100) along b axis.
