- guanosine14
- guideline15
- guillotine16
- guyline14
- gyrene11
- gyroplane18
- hailstone13
- hairline12
- halazone21
- halftone15
- halocline17
- halothane15
- hambone16
- haptene13
- hardline13
- harmine13
- headline13
- headphone18
- headstone13
- hearthstone16
- hegumene17
- hematine14
- hemline14
- henbane14
- heptane13
- heroine10
- herringbone20
- heterodyne16
- hexachlorethane33
- hexachloroethane34
- hexachlorophene36
- hexamethylenetetramine44
- hexamine21
- hexane16
- hexone16
- hipbone16
- hipline14
- hircine13
- histamine15
- histidine13
- histone10
- hogmane15
- holocrine16
- holystone15
- hominine15
- homophone20
- hone7
- hormone13
- hornstone13
- hotline11
- humane13
- hurricane16
- hyacinthine22
- hyaline13
- hydralazine27
- hydrazine24
- hydrocortisone23
- hydrophane21
- hydrophone21
- hydroplane20
- hydroquinone29
- hydroxylamine32
- hydroxyproline33
- hydroxytryptamine40
- hydroxyzine35
- hyenine13
- hygiene14
- hyoscine16
- hyoscyamine24
- hyperfine20
- hyperimmune26
- hypermasculine30
- hyperplane22
- hypersaline20
- hypersthene21
- hypogene18
- hypoxanthine30
- ibogaine14
- illumine15
- imagine13
- imine9
- imipramine20
- immane13
- immune14
- impone13
- importune17
- inane7
- incarnadine18
- incline13
- indamine14
- indene9
- indigene13
- indiscipline22
- induline13
- infantine15
- inhumane16
- inkstone14
- inopportune20
- inquiline22
- insane8
- inshrine12
- insigne11
- intercrystalline25
- interlacustrine22
- interline12
- intermembrane24
- intermontane18
- interne9
- internecine17
- intertwine15
- intervene15
- interzone20
- intestine11
- inthrone12
- intine8
- intone8
- intrauterine15
- intwine12
- inurbane14
- iodine8
- ionone8
- iridosmine15
- irone6
- ironstone11
- isatine8
- isoalloxazine32
- isobutane14
- isobutylene19
- isochrone15
- isocline13
- isogone10
- isoleucine16
- isoline9
- isooctane13
- isoprenaline18
- isoprene12
- isotone8
- jane14
- jasmine20
- jawbone23
- jawline21
- jejune26
- jessamine22
- julienne21
- kane9
- kaoline13
- kerne10
- kerosene13
- kerosine13
- ketene11
- ketone11
- keystone15
- kine9
- knucklebone29
- koine10
- krone10
- kune10
- labyrinthine22
- lactone12
- lacune12
- lacustrine16
- ladrone10
- lagune11
- landline13
- landmine15
- lane6
- langoustine17
- langsyne15
- lanoline12
- larine8
- lasagne11
- latrine9
- lauwine13
- lawine11
- legatine12
- lemurine14
- leone7
- leonine10
- leporine13
- leptotene14
- leucine13
- leukotriene18
- liane7
- libertine14
- lidocaine15
- lierne8
- lifeline14
- lightplane20
- ligroine12
- limacine16
- limestone14
- limonene14
- limousine15
- lindane11
- line6
- linguine14
- lithophane19
- lithopone16
- loadstone12
- lobeline14