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(1) Endcapped Octadecyl (C18)
(2) Unendcapped Octadecyl (C18N)
(3) Unendcapped Octadecyl (C18A)
(4) Octyl (C8)
(5) Unbounded Silica Gel (Silica)
(6) Dihydroxy (Diol)
(7) Cyanopropyl (CN)