n-beta-d-glucopyranosyl-5-asa was formed non-enzymically from 5-asa and glucose in phosphate buffer ph 7.4 , and was unstable under weakly acidic conditions , decomposition increasing with temperature , i.e . decomposition was complete after 30 min at ph 5.0 and 23 degrees c .
C0004057
asa
C0015967
increasing