3hydroxy3methylglutarylcoenzyme

3-hydroxy-3-methyl is an incomplete IUPAC descriptor that indicates a hydroxyl group and a methyl substituent on carbon-3 of a parent hydrocarbon framework. Because the full parent chain or ring system is not specified, the exact compound cannot be identified from this fragment alone. In general, a carbon bearing both a hydroxyl group and a methyl substituent, together with two other carbon substituents, forms a tertiary alcohol. The physical properties—such as boiling point, solubility, and odor—depend on the complete structure, including the length of the carbon chain and any additional functional groups.

Reactivity is typical of tertiary alcohols: dehydration under acidic conditions can produce alkenes, and substitution reactions can convert the hydroxyl into leaving groups (for example, to form alkyl halides). Oxidation of tertiary alcohols does not typically yield carbonyl compounds; instead, strong oxidation can cleave carbon–carbon bonds or lead to rearrangements. Synthesis of 3-hydroxy-3-methyl derivatives often involves electrophilic addition to alkenes, carbonyl reductions, or substitution on preexisting tertiary centers.

In chemistry and biochemistry, motifs with hydroxyl and methyl substituents at a tertiary center occur in various natural products and synthetic intermediates, including terpenoid and steroid frameworks. If a specific compound is intended, providing the complete IUPAC name, a structural formula, or a CAS number would enable a precise, citable entry.