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List of Radical Names From "I" to "L"

Radical name Formula Based on rule no.
Icosyl A-1.2
Imidazolidinyl B-2.12, B-5.11
Imidazolinyl B-2.12, B-5.11
Imidazolyl B-2.12, B-5.11
Imino , C-815.1, C-815.3
Iminomethylamino C-951.4
Indacenyl A-21.1, A-24.2
Indanyl A-23.1, A-24.2
Indazolyl B-2.11, B-5.11
Indenyl A-21.1, A-24.2
Indolinyl B-2.12, B-5.11
Indolinylidene (3- shown) B-5.12
Indolizinyl B-2.11, B-5.11
Indolyl B-2.11, B-5.11
Iodo C-10.1, C-102.1
Iodoformyl C-481.2
Iodonio C-82.1
iodoso,
see Iodosyl
Iodosyl,
replacing iodoso		 C-10.1, C-106.1
iodoxy,
see Iodyl
Iodyl,
replacing iodoxy		 C-10.1, C-106.1
Isobenzofuranyl B-2.11, B-5.11
Isobutoxy
(unsubstituted only)		 C-205.1
Isobutyl
(unsubstituted only)		 A-2.25
Isobutylidene
(unsubstituted only)		 A-4.1
Isobutylidyne
(unsubstituted only)		 A-4.1
Isobutyryl
(preferred to 2-methylpropanoyl)
(unsubstituted only)		 C-404.1
Isocarbonohydrazido
(and tautomers)		 C-983.1
Isochromanyl B-2.12, B-5.11
Isocoumarinyl B-5.11, C-473.1
Isocrotonoyl
(preferred to cis-2-butenoyl)
(cis)		 C-404.1
Isocyanato C-833.1
Isocyano C-833.1
Isohexyl
(unsubstituted only)		 A-2.25
Isohexylidene
(unsubstituted only)		 A-4.1
Isohexylidyne
(unsubstituted only)		 A-4.1
Isoindolinyl B-2.12, B-5.11
Isoindolyl B-2.11, B-5.11
Isoleucyl C-421.1
Isonicotinoyl
(preferred to 4-pyridinecarbonyl)
(4-)		 C-404.1
Isoxazolyl B-2.11, B-5.11
Isopentyl
(unsubstituted only)		 A-2.25
Isopentylidene
(unsubstituted only)		 A-4.1
Isopentylidyne
(unsubstituted only)		 A-4.1
Isopentyloxy
(unsubstituted only)		 C-205.1
Isophthaloyl
(preferred to 1,3-benzenedicarbonyl)
(m-)		 C-404.1
Isopropenyl
(replacing 1-methylvinyl)
(unsubstituted only)		 A-3.5
Isopropoxy
(unsubstituted only)		 C-205.1
Isopropyl
(unsubstituted only)		 A-2.25
p-Isopropylbenzoyl C-404.1
Isopropylbenzyl A-13.3
Isopropylidene A-4.1
Isoquinolyl B-2.11, B-5.11
Isoselenocyanato C-833.1
Isosemiccarbazido
(and tautomers)		 C-983.1
Isothiazolyl B-2.11, B-5.11
Isothiocyanato C-833.1
Isothioureido , C-972.2, C-974.1
Isoureido , C-972.2
Isovaleryl
(preferred to 3-methylbutanoyl)
(unsubstituted only)		 C-404.1
Isoviolanthrenyl A-23.1, A-24.2
Lactoyl
(preferred to 2-hydroxypropanoyl)		 C-411.1
Lanthionyl C-421.1
Lauroyl
(unsubstituted only)		 C-404.1
Leucyl C-421.1
Linalyl A-75.1
Lysyl C-421.1

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This HTML reproduction of Sections A, B and C of IUPAC "Blue Book" is as close as possible to the published version [see Nomenclature of Organic Chemistry, Sections A, B, C, D, E, F, and H, Pergamon Press, Oxford, 1979. Copyright 1979 IUPAC.] If you need to cite these rules please quote this reference as their source.

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