Carbon + Oxygen Compounds (C + O)
Browse all compounds containing Carbon + Oxygen by molecular formula, IUPAC name, or traditional name. Explore molecular weights and compound details.
We're currently updating our database. We've sourced 10 million compounds so far, with the full 170 million coming shortly.
Total Compounds: 6,571,471
Showing 6,429,901 - 6,429,950 of 6,571,471
Page 128599 of 131,430
| CID | Formula | IUPAC Name | Traditional Name | Mol. Weight |
|---|---|---|---|---|
| 6845852 | C21H17N3O3S | 3-allyl-2-(4-hydroxyphenyl)imino-5-(5-methyl-2-oxo-indolin-3-ylidene)thiazolidin-4-one | 3-allyl-2-(4-hydroxyphenyl)imino-5-(5-methyl-2-oxo-indolin-3-ylidene)thiazolidin-4-one | 391.4 |
| 6845853 | C20H14BrN3O3S | 3-allyl-5-(5-bromo-2-oxo-indolin-3-ylidene)-2-(4-hydroxyphenyl)imino-thiazolidin-4-one | 3-allyl-5-(5-bromo-2-oxo-indolin-3-ylidene)-2-(4-hydroxyphenyl)imino-thiazolidin-4-one | 456.3 |
| 6845854 | C17H20N4O3 | N-(4-ethoxyphenyl)-4-oxo-4-[2-(pyrrol-2-ylidenemethyl)hydrazino]butanamide | N-(4-ethoxyphenyl)-4-oxo-4-[2-(pyrrol-2-ylidenemethyl)hydrazino]butanamide | 328.4 |
| 6845855 | C22H16BrN3O4S | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-phenoxy-acetamide | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-phenoxy-acetamide | 498.4 |
| 6845856 | C22H15BrClN3O4S | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(4-chlorophenoxy)acetamide | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(4-chlorophenoxy)acetamide | 532.8 |
| 6845857 | C22H15BrClN3O3S2 | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(4-chlorophenyl)sulfanyl-acetamide | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(4-chlorophenyl)sulfanyl-acetamide | 548.9 |
| 6845858 | C22H15Br2N3O4S | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(4-bromophenoxy)acetamide | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(4-bromophenoxy)acetamide | 577.2 |
| 6845859 | C23H18BrN3O4S | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(2-methylphenoxy)acetamide | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(2-methylphenoxy)acetamide | 512.4 |
| 6845860 | C23H18BrN3O4S | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(3-methylphenoxy)acetamide | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(3-methylphenoxy)acetamide | 512.4 |
| 6845861 | C23H18BrN3O4S | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(4-methylphenoxy)acetamide | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(4-methylphenoxy)acetamide | 512.4 |
| 6845862 | C24H20BrN3O4S | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(4-ethylphenoxy)acetamide | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(4-ethylphenoxy)acetamide | 526.4 |
| 6845863 | C25H22BrN3O4S | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(4-isopropylphenoxy)acetamide | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(4-isopropylphenoxy)acetamide | 540.4 |
| 6845864 | C26H24BrN3O4S | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(4-tert-butylphenoxy)acetamide | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(4-tert-butylphenoxy)acetamide | 554.5 |
| 6845865 | C26H24BrN3O4S | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(2-isopropyl-5-methyl-phenoxy)acetamide | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(2-isopropyl-5-methyl-phenoxy)acetamide | 554.5 |
| 6845866 | C24H20BrN3O4S | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(3,4-dimethylphenoxy)acetamide | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(3,4-dimethylphenoxy)acetamide | 526.4 |
| 6845867 | C24H20BrN3O4S | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(2,4-dimethylphenoxy)acetamide | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(2,4-dimethylphenoxy)acetamide | 526.4 |
| 6845868 | C22H15BrClN3O4S | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(2-chlorophenoxy)acetamide | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(2-chlorophenoxy)acetamide | 532.8 |
| 6845869 | C24H20BrN3O4S | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(3,5-dimethylphenoxy)acetamide | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(3,5-dimethylphenoxy)acetamide | 526.4 |
| 6845870 | C17H13ClN2O2 | 4-[(3-chloro-6-oxo-cyclohexa-2,4-dien-1-ylidene)methyl]-5-methyl-2-phenyl-1H-pyrazol-3-one | 4-[(3-chloro-6-oxo-cyclohexa-2,4-dien-1-ylidene)methyl]-5-methyl-2-phenyl-1H-pyrazol-3-one | 312.7 |
| 6845871 | C22H15BrN4O6S | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(2-nitrophenoxy)acetamide | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(2-nitrophenoxy)acetamide | 543.3 |
| 6845872 | C22H15BrN4O6S | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(4-nitrophenoxy)acetamide | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(4-nitrophenoxy)acetamide | 543.3 |
| 6845873 | C23H17BrClN3O4S | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(4-chloro-3-methyl-phenoxy)acetamide | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(4-chloro-3-methyl-phenoxy)acetamide | 546.8 |
| 6845874 | C23H17BrClN3O4S | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(4-chloro-2-methyl-phenoxy)acetamide | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(4-chloro-2-methyl-phenoxy)acetamide | 546.8 |
| 6845875 | C24H19BrClN3O4S | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(4-chloro-3,5-dimethyl-phenoxy)acetamide | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(4-chloro-3,5-dimethyl-phenoxy)acetamide | 560.8 |
| 6845876 | C22H14BrCl2N3O4S | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(2,4-dichlorophenoxy)acetamide | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(2,4-dichlorophenoxy)acetamide | 567.2 |
| 6845877 | C23H16Br3N3O4S | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(2,4-dibromo-6-methyl-phenoxy)acetamide | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-(2,4-dibromo-6-methyl-phenoxy)acetamide | 670.2 |
| 6845878 | C21H12BrClN4O5S | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-chloro-5-nitro-benzamide | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-chloro-5-nitro-benzamide | 547.8 |
| 6845879 | C22H15BrN4O5S | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-4-methyl-3-nitro-benzamide | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-4-methyl-3-nitro-benzamide | 527.3 |
| 6845880 | C22H15BrN4O5S | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-3-methyl-4-nitro-benzamide | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-3-methyl-4-nitro-benzamide | 527.3 |
| 6845881 | C21H12BrClN4O5S | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-chloro-4-nitro-benzamide | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-chloro-4-nitro-benzamide | 547.8 |
| 6845882 | C21H12BrN5O7S | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-3,5-dinitro-benzamide | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-3,5-dinitro-benzamide | 558.3 |
| 6845883 | C22H15BrN4O5S | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-methyl-3-nitro-benzamide | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-2-methyl-3-nitro-benzamide | 527.3 |
| 6845884 | C21H12BrClN4O5S | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-4-chloro-3-nitro-benzamide | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-4-chloro-3-nitro-benzamide | 547.8 |
| 6845885 | C25H15BrClN3O4S | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-5-(4-chlorophenyl)furan-2-carboxamide | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-5-(4-chlorophenyl)furan-2-carboxamide | 568.8 |
| 6845886 | C25H15Br2N3O4S | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-5-(4-bromophenyl)furan-2-carboxamide | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-5-(4-bromophenyl)furan-2-carboxamide | 613.3 |
| 6845887 | C25H15BrClN3O4S | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-5-(3-chlorophenyl)furan-2-carboxamide | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-5-(3-chlorophenyl)furan-2-carboxamide | 568.8 |
| 6845888 | C25H14BrCl2N3O4S | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-5-(2,5-dichlorophenyl)furan-2-carboxamide | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-5-(2,5-dichlorophenyl)furan-2-carboxamide | 603.3 |
| 6845889 | C25H15BrN4O6S | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-5-(3-nitrophenyl)furan-2-carboxamide | N-[[2-(3-bromo-4-oxo-cyclohexa-2,5-dien-1-ylidene)-3H-1,3-benzoxazol-5-yl]carbamothioyl]-5-(3-nitrophenyl)furan-2-carboxamide | 579.4 |
| 6845890 | C16H15BrN2O4 | N'-[(3-bromo-5-methoxy-6-oxo-cyclohexa-2,4-dien-1-ylidene)methyl]-4-methoxy-benzohydrazide | N'-[(3-bromo-5-methoxy-6-oxo-cyclohexa-2,4-dien-1-ylidene)methyl]-4-methoxy-benzohydrazide | 379.20 |
| 6845891 | C9H12N2O4S | N'-[(3-methoxy-6-oxo-cyclohexa-2,4-dien-1-ylidene)methyl]methanesulfonohydrazide | N'-[(3-methoxy-6-oxo-cyclohexa-2,4-dien-1-ylidene)methyl]methanesulfonohydrazide | 244.27 |
| 6845892 | C16H14ClN5O3 | 2-(benzotriazol-1-yl)-N'-[(3-chloro-5-methoxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)methyl]acetohydrazide | 2-(benzotriazol-1-yl)-N'-[(3-chloro-5-methoxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)methyl]acetohydrazide | 359.77 |
| 6845893 | C26H24Cl2N6O3S | 2-[[5-[(4-chloroanilino)methyl]-4-phenyl-1,2,4-triazol-3-yl]sulfanyl]-N'-[(3-chloro-5-methoxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)methyl]propanehydrazide | 2-[[5-[(4-chloroanilino)methyl]-4-phenyl-1,2,4-triazol-3-yl]sulfanyl]-N'-[(3-chloro-5-methoxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)methyl]propanehydrazide | 571.5 |
| 6845894 | C25H21BrIN7O4S | N'-[(3-bromo-5-nitro-6-oxo-cyclohexa-2,4-dien-1-ylidene)methyl]-2-[[5-[(4-iodoanilino)methyl]-4-phenyl-1,2,4-triazol-3-yl]sulfanyl]propanehydrazide | N'-[(3-bromo-5-nitro-6-oxo-cyclohexa-2,4-dien-1-ylidene)methyl]-2-[[5-[(4-iodoanilino)methyl]-4-phenyl-1,2,4-triazol-3-yl]sulfanyl]propanehydrazide | 722.4 |
| 6845895 | C28H23BrN6O2S | N'-[(3-bromo-6-oxo-cyclohexa-2,4-dien-1-ylidene)methyl]-2-[[5-[(1-naphthylamino)methyl]-4-phenyl-1,2,4-triazol-3-yl]sulfanyl]acetohydrazide | N'-[(3-bromo-6-oxo-cyclohexa-2,4-dien-1-ylidene)methyl]-2-[[5-[(1-naphthylamino)methyl]-4-phenyl-1,2,4-triazol-3-yl]sulfanyl]acetohydrazide | 587.5 |
| 6845896 | C29H26N6O3S | N'-[(3-methoxy-6-oxo-cyclohexa-2,4-dien-1-ylidene)methyl]-2-[[5-[(1-naphthylamino)methyl]-4-phenyl-1,2,4-triazol-3-yl]sulfanyl]acetohydrazide | N'-[(3-methoxy-6-oxo-cyclohexa-2,4-dien-1-ylidene)methyl]-2-[[5-[(1-naphthylamino)methyl]-4-phenyl-1,2,4-triazol-3-yl]sulfanyl]acetohydrazide | 538.6 |
| 6845897 | C17H16N4O2 | N-[(2,5-dimethoxyphenyl)methyleneamino]phthalazin-1-amine | N-[(2,5-dimethoxyphenyl)methyleneamino]phthalazin-1-amine | 308.33 |
| 6845898 | C23H20N5OS2+ | 1-[[(Z)-[4-(4-benzylpyridin-1-ium-1-yl)-2-oxo-thiazol-5-ylidene]methyl]amino]-3-phenyl-thiourea | 1-[[(Z)-[4-(4-benzylpyridin-1-ium-1-yl)-2-oxo-thiazol-5-ylidene]methyl]amino]-3-phenyl-thiourea | 446.6 |
| 6845899 | C41H52N6O13 | 3-[(20Z)-5-carbamoyl-4,22-bis(2-carboxyethyl)-18,29-bis(carboxymethyl)-5,23-dimethyl-14,25-dioxo-9,26,27,28,30-pentazaheptacyclo[19.5.1.13,6.18,11.116,19.01,23.010,15]triaconta-6(30),9,19(28),20-tetraen-17-yl]propanoic acid | 3-[(20Z)-5-carbamoyl-4,22-bis(2-carboxyethyl)-18,29-bis(carboxymethyl)-5,23-dimethyl-14,25-dioxo-9,26,27,28,30-pentazaheptacyclo[19.5.1.13,6.18,11.116,19.01,23.010,15]triaconta-6(30),9,19(28),20-tetraen-17-yl]propanoic acid | 836.9 |
| 6845900 | C19H15BrN2O3 | 3-bromo-4-methoxy-N'-[(2-oxo-1-naphthylidene)methyl]benzohydrazide | 3-bromo-4-methoxy-N'-[(2-oxo-1-naphthylidene)methyl]benzohydrazide | 399.2 |
| 6845901 | C27H18ClN5O8S2-2 | 3-[[4-(4-amino-2-chloro-5-methoxy-phenyl)azo-6-sulfonato-1-naphthyl]hydrazono]-4-oxo-naphthalene-2-sulfonate | 3-[[4-(4-amino-2-chloro-5-methoxy-phenyl)azo-6-sulfonato-1-naphthyl]hydrazono]-4-oxo-naphthalene-2-sulfonate | 640.0 |
Related Element Combinations
Explore other compound combinations that include similar elements. Discover more chemistry by browsing related searches.
Looking for a specific combination?
Select any elements from the periodic table and discover all known compounds instantly.
NIH
Data Sourced from PubChem
All compound data on CompoundLookup comes from PubChem, the world's largest free chemistry database maintained by the National Institutes of Health (NIH). We've indexed and organized this data to enable element-based searching - a feature not available on any other platform. We're constantly adding more compounds and improving our coverage. Learn more about our mission.