| 120666-40-2 | Indium, chlorobis(2,2-dimethylpropyl)- | C10H22ClIn |
| 120671-13-8 | Imidazo[1,2-a]pyridine-8-carboxylic acid, 1,2,3,5,6,7-hexahydro-5-oxo-1-(phenylmethyl)-, ethyl ester | C17H20N2O3 |
| 120802-92-8 | Isoxazole, 5-(1,3-benzodioxol-5-ylmethyl)-4,5-dihydro-3-(3,4,5-trimethoxyphenyl)- | C20H21NO6 |
| 120834-40-4 | Imidazo[1,5-b]isoxazol-5(6H)-yloxy, 2-(ethoxycarbonyl)tetrahydro-4,4,6,6-tetramethyl-, cis- | C12H21N2O4 |
| 121126-44-1 | Imidodisulfuric acid, (sulfooxy)- | H3NO10S3 |
| 12136-30-0 | Indium, compd. with lanthanum (1:1) | InLa |
| 12136-33-3 | Indium, compd. with praseodymium (1:3) | InPr3 |
| 12136-35-5 | Indium, compd. with thulium (1:1) | InTm |
| 12136-37-7 | Indium, compd. with terbium (3:1) | In3Tb |
| 12136-38-8 | Indium, compd. with thulium (3:1) | In3Tm |
| 12140-49-7 | Iron, compd. with platinum (1:3) | FePt3 |
| 12141-83-2 | Indium, compd. with mercury (1:1) | HgIn |
| 12141-93-4 | Indium, compd. with lanthanum (3:1) | In3La |
| 12141-94-5 | Indium, compd. with lutetium (3:1) | In3Lu |
| 12141-95-6 | Indium, compd. with neodymium (3:1) | In3Nd |
| 12141-96-7 | Indium, compd. with praseodymium (3:1) | In3Pr |
| 12141-99-0 | Indium, compd. with yttrium (3:1) | In3Y |
| 12142-03-9 | Iridium, compd. with manganese (1:1) | IrMn |
| 12142-15-3 | Iridium, compd. with molybdenum (3:1) | Ir3Mo |
| 12160-13-3 | Iron, compd. with zirconium (1:3) | FeZr3 |
| 12160-35-9 | Iron, compd. with molybdenum (7:6) | Fe7Mo6 |
| 12178-98-2 | Iron, compd. with yttrium (9:1) | Fe9Y |
| 12182-96-6 | Iron, compd. with thorium (3:1) | Fe3Th |
| 12182-97-7 | Iron, compd. with yttrium (3:1) | Fe3Y |
| 12186-46-8 | Iron, compd. with platinum (1:1) | FePt |
| 121910-71-2 | Isoxazolo[3,4-d]pyridazin-7(6H)-one, 3-ethyl-6-methyl-4-phenyl- | C14H13N3O2 |
| 12192-00-6 | Indium, compd. with palladium (1:1) | InPd |
| 12196-66-6 | Iridium, compd. with vanadium (3:1) | Ir3V |
| 122420-34-2 | Isopropyl Dimethyl Methoxysilane | C6H16OSi |
| 12268-62-1 | Iron, compd. with terbium (3:1) | Fe3Tb |
| 12281-11-7 | Indium, compd. with sodium (1:1) | InNa |
| 12285-69-7 | Iron, compd. with platinum (3:1) | Fe3Pt |
| 12296-69-4 | Indium, compd. with silver (1:1) | AgIn |
| 12298-75-8 | Iridium, compd. with zirconium (2:1) | Ir2Zr |
| 12298-77-0 | Iridium, compd. with zirconium (3:1) | Ir3Zr |
| 12310-93-9 | Iron, compd. with palladium (1:3) | FePd3 |
| 12315-79-6 | Iridium, compd. with plutonium (2:1) | Ir2Pu |
| 12325-67-6 | Iridium, compd. with neodymium (2:1) | Ir2Nd |
| 12339-64-9 | Indium, compd. with tin (3:1) | In3Sn |
| 123410-37-7 | Isoquinoline, 1,2,3,4-tetrahydro-2-[(E)-[[(1S)-1-(methoxymethyl)-2-methylpropyl]imino] methyl]- | C16H24N2O |
| 12372-42-8 | Indium, compd. with lithium (1:1) | InLi |
| 12382-36-4 | Iron, compd. with palladium (3:1) | Fe3Pd |
| 12382-38-6 | Iron, compd. with tin (3:2) | Fe3Sn2 |
| 12382-42-2 | Iron, compd. with tantalum (7:3) | Fe7Ta3 |
| 12383-79-8 | Indium, compd. with palladium (1:3) | InPd3 |
| 12383-83-4 | Indium, compd. with platinum (1:3) | InPt3 |
| 12383-84-5 | Indium, compd. with samarium (1:2) | InSm2 |
| 12383-86-7 | Indium, compd. with thulium (1:2) | InTm2 |
| 12383-91-4 | Indium, compd. with palladium (3:2) | In3Pd2 |
| 12383-92-5 | Indium, compd. with thulium (3:5) | In3Tm5 |
| 124772-32-3 | Isoquinolinium, 2-(1-methylethyl)-, iodide | C12H14N.I |
| 12500-66-2 | Iodate(1-), hydroxyiodo- | HI2O |
| 12502-19-1 | Iridium, compd. with nickel (1:1) | IrNi |
| 125176-41-2 | Iron, bis[1-(2,4-dihydroxyphenyl)ethanonato]- | C16H14FeO6 |
| 12518-52-4 | Iron, compd. with manganese (1:1) | FeMn |
| 12518-77-3 | Iron, compd. with neptunium (2:1) | Fe2Np |
| 12518-83-1 | Iron, compd. with samarium (3:1) | Fe3Sm |
| 12518-84-2 | Iron, compd. with thulium (3:1) | Fe3Tm |
| 12524-61-7 | Iodate(1-), bromo- | BrI |
| 12528-83-5 | Iron(2+), dihydroxy- | FeH2O2 |
| 12532-47-7 | Indium, compd. with lead (1:1) | InPb |
| 12612-43-0 | Iron sodium oxide | Fe.Na.O |
| 12626-75-4 | Iron carbonate hydroxide | Unspecified |
| 12640-64-1 | Iron carbide | Unspecified |
| 12645-46-4 | Iridium oxide | Unspecified |
| 126478-50-0 | Indium hydroxide sulfide | HO.In.S |
| 126691-49-4 | Iodonium, [(octyloxy)phenyl]phenyl- | C20H26IO |
| 12673-38-0 | Iron lithium titanium oxide | Fe.Li.O.Ti |
| 12689-97-3 | Iron, compd. with yttrium (4:1) | Fe4Y |
| 126991-57-9 | Imidazo[1,5-a]quinoxalin-4(5H)-one, 3-(5-cyclopropyl-1,2,4-oxadiazol-3-yl)- | C15H11N5O2 |
| 12707-85-6 | Iron nickel oxide | Fe.Ni.O |
| 12737-83-6 | Iron boride carbide | Unspecified |
| 12771-04-9 | Iron tungsten oxide | Fe.O.W |
| 12776-58-8 | Iron, compd. with ytterbium (2:1) | Fe2Yb |
| 12777-79-6 | Iron tin oxide | Fe.O.Sn |
| 12777-91-2 | Iron magnesium manganese zinc oxide | Fe.Mg.Mn.O.Zn |
| 12785-35-2 | Indium, compd. with silver (2:1) | AgIn2 |
| 12789-35-4 | Iron magnesium oxide | Fe.Mg.O |
| 12795-74-3 | Iron yttrium oxide | Fe.O.Y |
| 129179-31-3 | Imidazo[1,2-a]pyridine, 2-(2-methyl-1-propenyl)-3-nitro- | C11H11N3O2 |
| 129481-43-2 | Isothiazolium, 4-ethyl-5-methyl-2-phenyl-, perchlorate | C12H14NS.ClO4 |
| 129672-91-9 | Imidodiphosphorous acid, methyl-, tetrakis(2,2,2-trifluoroethyl) ester | C9H11F12NO4P2 |
| 130025-53-5 | Iron lanthanum oxide | Fe.La.O |
| 130182-33-1 | Imidazo[2,1-b]thiazole-5-methanol, 3,6-dimethyl- | C8H10N2OS |
| 130256-72-3 | Imidazo[4,5-d]imidazol-2(1H)-one, hexahydro-1,3,4,6-tetranitro- | C4H4N8O9 |
| 132053-83-9 | Iron carbide oxide | C.Fe.O |
| 13261-53-5 | Imidodicarbonimidic diamide, N-1-naphthalenyl- | C12H13N5 |
| 132628-97-8 | Isoquinoline, 3,4-dihydro-3,3-dimethyl-1-(methylthio)- | C12H15NS |
| 13276-42-1 | Inosine, 2-fluoro- | C10H11FN4O5 |
| 133290-82-1 | Iron neodymium boride | B.Fe.Nd |
| 13338-60-8 | Isoquinoline, 3,4-dihydro-6,7,8-trimethoxy- | C12H15NO3 |
| 133571-27-4 | Indeno[1,2-b]indole, 5,10-dihydro-8-methyl- | C16H13N |
| 133881-87-5 | Isoquinoline, 1,2,3,4-tetrahydro-2-(4-nitro-1-oxido-3-pyridinyl)- | C14H13N3O3 |
| 133984-10-8 | Iron, (tetrahydrofuran)bis[1,1,1-trimethyl-N-(trimethylsilyl)silanaminato]- | C16H44FeN2OSi4 |
| 134044-45-4 | Imidazo[1,2-a]pyrimidine, 2-(3-methoxyphenyl)- | C13H11N3O |
| 135827-01-9 | Isothiazolium, 4,5-dimethyl-2-[[(2,4,6-trimethylphenyl)sulfonyl]amino]-,perchlorate | C14H19N2O2S2.ClO4 |
| 136131-71-0 | Iron, tetracarbonyl(1-ethoxy-2-hexynylidene)- | C12H12FeO5 |
| 136409-32-0 | Isoquinoline, 3-(4-chlorophenyl)-1-(diphenylmethyl)- | C28H20ClN |
| 136598-60-2 | Iron, tricarbonyl(tributylphosphine)bis(trichlorosilyl)- | C15H27Cl6FeO3PSi2 |
| 137143-82-9 | Imidazolidine, 2-(dinitromethylene)- | C4H6N4O4 |