| 12044-85-8 | Gold, compd. with nickel (1:1) | AuNi |
| 12044-91-6 | Gold, compd. with tin (1:4) | AuSn4 |
| 12044-94-9 | Gold, compd. with sodium (2:1) | Au2Na |
| 12044-97-2 | Gold, compd. with magnesium (3:1) | Au3Mg |
| 12044-98-3 | Gold, compd. with manganese (4:1) | Au4Mn |
| 120510-68-1 | Guanidine, N-(4-cyanophenyl)-N'-cyclooctyl-N''-(1H-tetrazol-5-ylmethyl)- | C18H24N8 |
| 12062-73-6 | Germanium, compd. with iron (1:1) | FeGe |
| 12062-74-7 | Germanium, compd. with iron (2:1) | FeGe2 |
| 12063-30-8 | Gallium, compd. with iron (1:3) | Fe3Ga |
| 12063-31-9 | Germanium, compd. with iron (1:3) | Fe3Ge |
| 12063-52-4 | Germanium, compd. with iron (3:5) | Fe5Ge3 |
| 12063-92-2 | Gallium, compd. with magnesium (1:1) | GaMg |
| 12063-94-4 | Gallium, compd. with neodymium (1:1) | GaNd |
| 12063-96-6 | Gallium, compd. with nickel (1:3) | GaNi3 |
| 12064-14-1 | gallane; magnesium dihydride | Ga2Mg5 |
| 12064-23-2 | Gallium, compd. with uranium (2:1) | Ga2U |
| 12064-40-3 | Gadolinium, compd. with germanium (1:2) | GdGe2 |
| 12064-41-4 | Gadolinium, compd. with indium (1:1) | GdIn |
| 12064-49-2 | Gadolinium, compd. with ruthenium (1:2) | GdRu2 |
| 12064-51-6 | Gadolinium, compd. with zinc (1:2) | GdZn2 |
| 12064-67-4 | Gadolinium, compd. with indium (3:1) | Gd3In |
| 12064-73-2 | Gadolinium, compd. with germanium (5:4) | Gd5Ge4 |
| 12064-87-8 | Germanium, compd. with lanthanum (1:1) | GeLa |
| 12065-04-2 | Germanium, compd. with nickel (1:3) | GeNi3 |
| 12065-14-4 | Germanium, compd. with terbium (1:1) | GeTb |
| 12065-27-9 | Germanium, compd. with praseodymium (2:1) | Ge2Pr |
| 12065-30-4 | Germanium, compd. with terbium (2:1) | Ge2Tb |
| 12065-45-1 | Germanium, compd. with neodymium (4:5) | Ge4Nd5 |
| 12065-50-8 | Germanium, compd. with terbium (4:5) | Ge4Tb5 |
| 12065-51-9 | Germanium, compd. with yttrium (4:5) | Ge4Y5 |
| 120672-87-9 | Glycine, N-[(4-bromophenyl)methylene]-, methyl ester | C10H10BrNO2 |
| 120853-22-7 | Guanosine, N-[(dimethylamino)methylene]-3',5'-O-[1,1,3,3-tetrakis(1-methylethyl)-1, 3-disiloxanediyl]- | C25H44N6O6Si2 |
| 121150-45-6 | Glycine, N,N-dimethyl-, octyl ester | C12H25NO2 |
| 121326-92-9 | Glycine, N-[2-[bis[2-(1,1-dimethylethoxy)-2-oxoethyl]amino]ethyl]-N-[2-[bis[2-(1,1 -dimethylethoxy)-2-oxoethyl]amino]-3-(4-hydroxyphenyl)propyl]-, 1,1-dimethylethyl ester | C41H69N3O11 |
| 121327-12-6 | Glycine, N-[2-[bis[2-(1,1-dimethylethoxy)-2-oxoethyl]amino]ethyl]-N-[2-[bis[2-(1,1 -dimethylethoxy)-2-oxoethyl]amino]-1-[(4-hydroxyphenyl)methyl]ethyl]-, 1,1-dimethylethyl ester | C41H69N3O11 |
| 12134-89-3 | Germanium, compd. with platinum (1:1) | GePt |
| 12134-90-6 | Germanium, compd. with platinum (1:2) | GePt2 |
| 12140-59-9 | Gadolinium, compd. with palladium (1:3) | GdPd3 |
| 12140-81-7 | Germanium, compd. with scandium (1:1) | GeSc |
| 12140-83-9 | Germanium, compd. with titanium (1:1) | GeTi |
| 12140-85-1 | Germanium, compd. with manganese (2:3) | Ge2Mn3 |
| 12140-89-5 | Germanium, compd. with titanium (2:1) | Ge2Ti |
| 12140-97-5 | Germanium, compd. with titanium (3:5) | Ge3Ti5 |
| 12140-98-6 | Germanium, compd. with uranium (3:1) | Ge3U |
| 12140-99-7 | Germanium, compd. with vanadium (3:5) | Ge3V5 |
| 12145-57-2 | Gold, chloro[(1,2-h)-cyclooctene]- | C8H14AuCl |
| 12160-59-7 | Gallium, compd. with plutonium (1:3) | GaPu3 |
| 12160-65-5 | Gallium, compd. with yttrium (1:1) | GaY |
| 12160-69-9 | Gallium, compd. with lanthanum (2:1) | Ga2La |
| 12160-73-5 | Gallium, compd. with niobium (3:1) | Ga3Nb |
| 12160-85-9 | Gadolinium, compd. with indium (1:3) | GdIn3 |
| 12160-95-1 | Gadolinium, compd. with tin (1:3) | GdSn3 |
| 121616-32-8 | Glycine, N-[(9H-fluoren-9-ylmethoxy)carbonyl]-, methyl ester | C18H17NO4 |
| 121806-83-5 | Glycine, N-[2-[bis(carboxymethyl)amino]ethyl]-N-[2-[bis(carboxymethyl)amino]-3- (4-isothiocyanatophenyl)propyl]- | C22H28N4O10S |
| 121826-06-0 | Glycine, N-[2-[bis(carboxymethyl)amino]-3-(4-isothiocyanatophenyl)propyl]-N-[2- [bis(carboxymethyl)amino]methylethyl]- | C23H30N4O10S |
| 12183-34-5 | Gallium, compd. with nickel (1:1) | GaNi |
| 12183-52-7 | Gadolinium, compd. with zinc (1:1) | GdZn |
| 12186-68-4 | Gallium, compd. with manganese (1:1) | GaMn |
| 12186-69-5 | Gallium, compd. with manganese (1:3) | GaMn3 |
| 12186-74-2 | Gallium, compd. with zirconium (2:1) | Ga2Zr |
| 12194-98-8 | Germanium, compd. with zirconium (1:1) | GeZr |
| 1220-05-9 | Glycine, N-[3-(4-hydroxy-3-methoxyphenyl)-1-oxo-2-propenyl]- | C12H13NO5 |
| 122483-26-5 | Germanium, compd. with sodium (4:1) | Ge4Na |
| 12256-41-6 | Germanium, compd. with gold (1:1) | AuGe |
| 12256-45-0 | Gold, compd. with magnesium (1:1) | AuMg |
| 12256-46-1 | Gold, compd. with manganese (1:1) | AuMn |
| 12256-54-1 | Gold, compd. with tin (1:2) | AuSn2 |
| 12256-58-5 | Gold, compd. with vanadium (1:3) | AuV3 |
| 12256-60-9 | Gold, compd. with ytterbium (1:1) | AuYb |
| 12256-66-5 | Gold, compd. with yttrium (2:1) | Au2Y |
| 12256-68-7 | Gold, compd. with manganese (3:1) | Au3Mn |
| 12256-69-8 | Gold, compd. with nickel (3:1) | Au3Ni |
| 12256-71-2 | Gold, compd. with palladium (3:1) | Au3Pd |
| 12256-74-5 | Gold, compd. with zinc (3:1) | Au3Zn |
| 122631-94-1 | Gallium, dihydromethyl- | CH5Ga |
| 12265-09-7 | Gadolinium, compd. with rhodium (1:2) | GdRh2 |
| 12265-94-0 | Germanium, compd. with strontium (1:1) | GeSr |
| 12265-96-2 | Germanium, compd. with lanthanum (4:5) | Ge4La5 |
| 12268-60-9 | Germanium, compd. with iron (1:2) | Fe2Ge |
| 12271-30-6 | Gadolinium, compd. with silver (1:2) | Ag2Gd |
| 12271-86-2 | Gadolinium, compd. with gold (1:2) | Au2Gd |
| 12280-79-4 | Gadolinium, compd. with germanium (2:3) | Gd2Ge3 |
| 122846-17-7 | Glycine, N-acetyl-N-(4-methoxyphenyl)-, 1,1-dimethylethyl ester | C15H21NO4 |
| 12285-06-2 | Gold, compd. with vanadium (4:1) | Au4V |
| 12285-73-3 | Germanium, compd. with hafnium (2:1) | Ge2Hf |
| 12285-74-4 | Germanium, compd. with molybdenum (2:3) | Ge2Mo3 |
| 12285-75-5 | Germanium, compd. with zirconium (2:1) | Ge2Zr |
| 12285-76-6 | Germanium, compd. with hafnium (3:5) | Ge3Hf5 |
| 12285-77-7 | Germanium, compd. with tantalum (3:5) | Ge3Ta5 |
| 12285-78-8 | Germanium, compd. with zirconium (3:5) | Ge3Zr5 |
| 12298-12-3 | Germanium, compd. with manganese (1:3) | GeMn3 |
| 12310-99-5 | Gallium, compd. with praseodymium (1:1) | GaPr |
| 12313-69-8 | Gold, compd. with palladium (2:1) | Au2Pd |
| 123188-38-5 | Germanium, compd. with lithium (1:3) | GeLi3 |
| 12322-66-6 | Gold, compd. with ytterbium (3:1) | Au3Yb |
| 12324-88-8 | Gallium, compd. with samarium (3:5) | Ga3Sm5 |
| 12324-91-3 | Gadolinium, compd. with iridium (1:2) | GdIr2 |
| 12324-95-7 | Germanediimine, magnesium salt (1:1) | GeH2N2.Mg |
| 12339-10-5 | Germanium, compd. with uranium (2:1) | Ge2U |
| 12339-11-6 | Germanium, compd. with uranium (4:3) | Ge4U3 |