સ્તંભ $-II$
$(i)$ $\alpha- D -(-)-$ ફ્રુક્ટોફયુરાનોઝ
$(ii)$ $\beta-D-(-)-$ફ્રુક્ટોફયુરાનોઝ
$(iii)$ $\alpha-D-(-)$ ગ્લુકોપાયરેનોઝ
$(iv)$ $-D-(-)-$ ગ્લુકોપાયરેનોઝ
$\begin{align}
\begin{matrix}
C{{H}_{3}}-CH-C{{O}_{2}}H \\
|\,\,\,\,\,\,\,\, \\
\underset{\oplus }{\mathop{N}}{{H}_{3}} \\
\end{matrix}\,\,\,\,\,\,p{{K}_{a}}=2.2 \\
\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,p{{K}_{b}}=4.4 \\
\end{align}$