naphthyl group

[ naf-thil groop, nap-thil ]

nounChemistry.
  1. Also called al·pha-naph·thyl group [al-fuh-naf-thil groop, ‐nap-thil], /ˈæl fəˈnæf θɪl ˌgrup, ‐ˈnæp θɪl/, alpha-naph·thyl rad·i·cal. the univalent group C10H7–, having a replaceable hydrogen atom in the first, or alpha, position; 1-naphthyl group.

  2. Also called be·ta-naph·thyl group [bey-tuh-naf-thuhl groop, ‐nap-thil], /ˈbeɪ təˈnæf θəl ˌgrup, ‐ˈnæp θɪl/, be·ta-naph·thyl rad·i·cal. the univalent group C10H7–, having a replaceable hydrogen atom in the second, or beta, position; 2-naphthyl group.

  • Also called naph·thyl rad·i·cal [naf-thil rad-i-kuhl, nap-thil]. /ˈnæf θɪl ˌræd ɪ kəl, ˈnæp θɪl/.

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