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Common Names: Methyl Ethyl Propyl Propyl Alcohol Isopropyl Alcohol Propane

Alcohols can be named by the alkyl group bonded to the hydroxyl group, such as methyl alcohol or ethyl alcohol. Propyl alcohol can refer to either n-propyl alcohol or isopropyl alcohol. Alcohols are classified as primary, secondary, or tertiary based on the number of carbon atoms connected to the carbon bearing the hydroxyl group. Primary alcohols have the general formula RCH2OH, secondary alcohols RR'CHOH, and tertiary alcohols RR'R"COH. In archaic naming, alcohols can be named as derivatives of methanol ending in "-carbinol", such as trimethylcarbinol.

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41 views1 page

Common Names: Methyl Ethyl Propyl Propyl Alcohol Isopropyl Alcohol Propane

Alcohols can be named by the alkyl group bonded to the hydroxyl group, such as methyl alcohol or ethyl alcohol. Propyl alcohol can refer to either n-propyl alcohol or isopropyl alcohol. Alcohols are classified as primary, secondary, or tertiary based on the number of carbon atoms connected to the carbon bearing the hydroxyl group. Primary alcohols have the general formula RCH2OH, secondary alcohols RR'CHOH, and tertiary alcohols RR'R"COH. In archaic naming, alcohols can be named as derivatives of methanol ending in "-carbinol", such as trimethylcarbinol.

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rjohn 7
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Common names

In other less formal contexts, an alcohol is often called with the name of the corresponding alkyl
group followed by the word "alcohol", e.g., methyl alcohol, ethyl alcohol. Propyl alcohol may be n-
propyl alcohol or isopropyl alcohol, depending on whether the hydroxyl group is bonded to the end or
middle carbon on the straight propane chain. As described under systematic naming, if another
group on the molecule takes priority, the alcohol moiety is often indicated using the "hydroxy-" prefix.
[17]

Alcohols are then classified into primary, secondary (sec-, s-), and tertiary (tert-, t-), based upon the
number of carbon atoms connected to the carbon atom that bears the hydroxyl functional group.
(The respective numeric shorthands 1°, 2°, and 3° are also sometimes used in informal settings. [18])
The primary alcohols have general formulas RCH2OH. The simplest primary alcohol is methanol
(CH3OH), for which R=H, and the next is ethanol, for which R=CH3, the methyl group. Secondary
alcohols are those of the form RR'CHOH, the simplest of which is 2-propanol (R=R'=CH 3). For the
tertiary alcohols the general form is RR'R"COH. The simplest example is tert-butanol (2-
methylpropan-2-ol), for which each of R, R', and R" is CH3. In these shorthands, R, R', and R"
represent substituents, alkyl or other attached, generally organic groups.
In archaic nomenclature, alcohols can be named as derivatives of methanol using "-carbinol" as the
ending. For instance, (CH3)3COH can be named trimethylcarbinol.

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