Alcohol no, đơn chức, mạch hở có công thức chung là

$\text{C}{}_{\text{n}}\text{H}{}_{2n-1}\text{O}\text{H}(n\ge 3)$.

$\text{C}{}_n\text{H}{}_{2\text{n}+1}\text{C}\text{H}\text{O}(\text{n}\ge 0)$.

$\text{C}{}_{\text{n}}\text{H}{}_{2\text{n}+1}\text{C}\text{O}\text{O}\text{H}(\text{n}\ge 0)$.

$\text{C}{}_n\text{H}{}_{2n+1}\text{O}\text{H}(\text{n}\ge 1)$.