Sodium + Oxygen Compounds (Na + O)
Browse all compounds containing Sodium + Oxygen by molecular formula, IUPAC name, or traditional name. Explore molecular weights and compound details.
Total Compounds: 13,016
Showing 9,551 - 9,600 of 13,016
Page 192 of 261
| CID | Formula | IUPAC Name | Traditional Name | Mol. Weight |
|---|---|---|---|---|
| 5485519 | C28H20N8Na2O8S2 | disodium;(6Z)-4-amino-3-[4-[(2Z)-2-(2-amino-4-oxo-cyclohexa-2,5-dien-1-ylidene)hydrazino]phenyl]azo-5-oxo-6-(phenylhydrazono)naphthalene-2,7-disulfonate | disodium;(6Z)-4-amino-3-[4-[(2Z)-2-(2-amino-4-oxo-cyclohexa-2,5-dien-1-ylidene)hydrazino]phenyl]azo-5-oxo-6-(phenylhydrazono)naphthalene-2,7-disulfonate | 706.6 |
| 5485533 | C20H17N4NaO6S | sodium 3-[2,5-dimethoxy-4-[2-(4-oxocyclohexa-2,5-dien-1-ylidene)hydrazino]phenyl]azobenzenesulfonate | sodium 3-[2,5-dimethoxy-4-[2-(4-oxocyclohexa-2,5-dien-1-ylidene)hydrazino]phenyl]azobenzenesulfonate | 464.4 |
| 5485543 | C16H12CrN3NaO7S2 | sodium;chromium;(5E)-5-[(2-hydroxy-5-sulfamoyl-phenyl)hydrazono]-6-oxo-naphthalene-2-sulfonate | sodium;chromium;(5E)-5-[(2-hydroxy-5-sulfamoyl-phenyl)hydrazono]-6-oxo-naphthalene-2-sulfonate | 497.4 |
| 5485557 | C22H22N2Na2O4 | disodium;(Z)-1-[2-methyl-4-[3-methyl-4-[[(E)-1-oxido-3-oxo-but-1-enyl]amino]phenyl]anilino]-3-oxo-but-1-en-1-olate | disodium;(Z)-1-[2-methyl-4-[3-methyl-4-[[(E)-1-oxido-3-oxo-but-1-enyl]amino]phenyl]anilino]-3-oxo-but-1-en-1-olate | 424.4 |
| 5485575 | C17H11N2NaO4 | sodium 3-[(4-nitrophenyl)carbamoyl]naphthalen-2-olate | 2-Naphthalenecarboxamide, 3-hydroxy-N-(4-nitrophenyl)-, monosodium salt | 330.27 |
| 5485584 | C28H24Cl2N2Na2O8 | disodium;(Z)-1-(5-chloro-2,4-dimethoxy-anilino)-3-[4-[(Z)-3-(5-chloro-2,4-dimethoxy-anilino)-3-oxido-prop-2-enoyl]phenyl]-3-oxo-prop-1-en-1-olate | disodium;(Z)-1-(5-chloro-2,4-dimethoxy-anilino)-3-[4-[(Z)-3-(5-chloro-2,4-dimethoxy-anilino)-3-oxido-prop-2-enoyl]phenyl]-3-oxo-prop-1-en-1-olate | 633.4 |
| 5485607 | C17H15N4NaO5S | sodium (5Z)-3-methyl-5-[(3-methyl-5-oxo-1-phenyl-4H-pyrazol-4-yl)hydrazono]-6-oxo-cyclohexa-1,3-diene-1-sulfonate | sodium (5Z)-3-methyl-5-[(3-methyl-5-oxo-1-phenyl-4H-pyrazol-4-yl)hydrazono]-6-oxo-cyclohexa-1,3-diene-1-sulfonate | 410.4 |
| 5485609 | C16H12N5NaO7S | sodium 4-[3-methyl-4-[(2Z)-2-(3-nitro-6-oxo-cyclohexa-2,4-dien-1-ylidene)hydrazino]-5-oxo-4H-pyrazol-1-yl]benzenesulfonate | sodium 4-[3-methyl-4-[(2Z)-2-(3-nitro-6-oxo-cyclohexa-2,4-dien-1-ylidene)hydrazino]-5-oxo-4H-pyrazol-1-yl]benzenesulfonate | 441.4 |
| 5485624 | C29H16Na2O6 | disodium;4-[(E)-(3-carboxylato-4-oxo-1-naphthylidene)-phenyl-methyl]-1-hydroxy-naphthalene-2-carboxylate | disodium;4-[(E)-(3-carboxylato-4-oxo-1-naphthylidene)-phenyl-methyl]-1-hydroxy-naphthalene-2-carboxylate | 506.4 |
| 5485629 | C16H12N5NaO7S | sodium (5Z)-5-[(3-methyl-5-oxo-1-phenyl-4H-pyrazol-4-yl)hydrazono]-3-nitro-6-oxo-cyclohexa-1,3-diene-1-sulfonate | sodium (5Z)-5-[(3-methyl-5-oxo-1-phenyl-4H-pyrazol-4-yl)hydrazono]-3-nitro-6-oxo-cyclohexa-1,3-diene-1-sulfonate | 441.4 |
| 5485631 | C22H26N2Na2O11 | disodium;(5S,5aR,6S,6aR,7S,9Z,10aS)-9-[amino(hydroxy)methylene]-7-(dimethylamino)-5,6,10a-trihydroxy-5-methyl-8,10,11-trioxo-5a,6,6a,7-tetrahydrotetracene-1,12-diolate;dihydrate | disodium;(5S,5aR,6S,6aR,7S,9Z,10aS)-9-[amino(hydroxy)methylene]-7-(dimethylamino)-5,6,10a-trihydroxy-5-methyl-8,10,11-trioxo-5a,6,6a,7-tetrahydrotetracene-1,12-diolate;dihydrate | 540.4 |
| 5485638 | C20H17N4NaO5S | sodium 4-[(2Z)-2-[(5E)-5-[(2,4-dimethylphenyl)hydrazono]-4,6-dioxo-cyclohex-2-en-1-ylidene]hydrazino]benzenesulfonate | sodium 4-[(2Z)-2-[(5E)-5-[(2,4-dimethylphenyl)hydrazono]-4,6-dioxo-cyclohex-2-en-1-ylidene]hydrazino]benzenesulfonate | 448.4 |
| 5485672 | C17H12ClN3Na2O7S2 | disodium;(8E)-7-amino-8-[(5-chloro-4-methyl-2-sulfonato-phenyl)hydrazono]-4-oxo-naphthalene-2-sulfonate | disodium;(8E)-7-amino-8-[(5-chloro-4-methyl-2-sulfonato-phenyl)hydrazono]-4-oxo-naphthalene-2-sulfonate | 515.9 |
| 5485703 | C21H15N5Na2O9S | disodium;(3Z)-3-[[2-methoxy-5-methyl-4-(4-nitro-2-sulfonato-phenyl)azo-phenyl]hydrazono]-6-oxo-cyclohexa-1,4-diene-1-carboxylate | disodium;(3Z)-3-[[2-methoxy-5-methyl-4-(4-nitro-2-sulfonato-phenyl)azo-phenyl]hydrazono]-6-oxo-cyclohexa-1,4-diene-1-carboxylate | 559.4 |
| 5485710 | C36H14Cl6N12Na4O14S4 | tetrasodium;6,13-dichloro-3,10-bis[4-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-3-sulfonato-anilino]-[1,4]benzoxazino[2,3-b]phenoxazine-2,9-disulfonate | 68867-63-0 | 1271.5 |
| 5485713 | C28H21N9Na2O7S2 | disodium;(6E)-4-amino-3-[4-(2,4-diaminophenyl)azophenyl]azo-5-oxo-6-(phenylhydrazono)naphthalene-2,7-disulfonate | disodium;(6E)-4-amino-3-[4-(2,4-diaminophenyl)azophenyl]azo-5-oxo-6-(phenylhydrazono)naphthalene-2,7-disulfonate | 705.6 |
| 5485742 | C22H15N4NaO4S | sodium 3-[[4-[2-(4-oxocyclohexa-2,5-dien-1-ylidene)hydrazino]-1-naphthyl]azo]benzenesulfonate | sodium 3-[[4-[2-(4-oxocyclohexa-2,5-dien-1-ylidene)hydrazino]-1-naphthyl]azo]benzenesulfonate | 454.4 |
| 5485760 | C28H26N5NaO9S2 | sodium;2-aminoethanol;5-[2-(4-oxocyclohexa-2,5-dien-1-ylidene)hydrazino]-2-[2-[4-[2-(4-oxocyclohexa-2,5-dien-1-ylidene)hydrazino]-2-sulfo-phenyl]vinyl]benzenesulfonate | sodium;2-aminoethanol;5-[2-(4-oxocyclohexa-2,5-dien-1-ylidene)hydrazino]-2-[2-[4-[2-(4-oxocyclohexa-2,5-dien-1-ylidene)hydrazino]-2-sulfo-phenyl]vinyl]benzenesulfonate | 663.7 |
| 5485764 | C26H19N4NaO8S2 | sodium 5-[2-(4-oxocyclohexa-2,5-dien-1-ylidene)hydrazino]-2-[2-[4-[2-(4-oxocyclohexa-2,5-dien-1-ylidene)hydrazino]-2-sulfo-phenyl]vinyl]benzenesulfonate | sodium 5-[2-(4-oxocyclohexa-2,5-dien-1-ylidene)hydrazino]-2-[2-[4-[2-(4-oxocyclohexa-2,5-dien-1-ylidene)hydrazino]-2-sulfo-phenyl]vinyl]benzenesulfonate | 602.6 |
| 5485770 | C16H11ClN5NaO7S | sodium 4-[4-[(2Z)-2-(5-chloro-3-nitro-6-oxo-cyclohexa-2,4-dien-1-ylidene)hydrazino]-3-methyl-5-oxo-4H-pyrazol-1-yl]benzenesulfonate | sodium 4-[4-[(2Z)-2-(5-chloro-3-nitro-6-oxo-cyclohexa-2,4-dien-1-ylidene)hydrazino]-3-methyl-5-oxo-4H-pyrazol-1-yl]benzenesulfonate | 475.8 |
| 5485781 | C26H17N6Na3O10S3 | trisodium;(3Z)-6-(2,4-diaminophenyl)azo-4-oxo-3-[(4-sulfonato-1-naphthyl)hydrazono]naphthalene-2,7-disulfonate | trisodium;(3Z)-6-(2,4-diaminophenyl)azo-4-oxo-3-[(4-sulfonato-1-naphthyl)hydrazono]naphthalene-2,7-disulfonate | 738.6 |
| 5485783 | C35H26N6Na2O10S2 | disodium;(3Z)-7-[[(6Z)-6-[(2-methoxyphenyl)hydrazono]-5-oxo-7-sulfonato-2-naphthyl]carbamoylamino]-3-(o-tolylhydrazono)-4-oxo-naphthalene-2-sulfonate | disodium;(3Z)-7-[[(6Z)-6-[(2-methoxyphenyl)hydrazono]-5-oxo-7-sulfonato-2-naphthyl]carbamoylamino]-3-(o-tolylhydrazono)-4-oxo-naphthalene-2-sulfonate | 800.7 |
| 5485793 | C18H15N4NaO5S | sodium (6E)-6-[(4-acetamidophenyl)hydrazono]-5-amino-4-oxo-naphthalene-1-sulfonate | sodium (6E)-6-[(4-acetamidophenyl)hydrazono]-5-amino-4-oxo-naphthalene-1-sulfonate | 422.4 |
| 5485801 | C34H19ClN8Na4O12S4 | tetrasodium;2-[(2Z)-2-[8-[[4-chloro-6-[4-(6-methyl-7-sulfonato-1,3-benzothiazol-2-yl)anilino]-1,3,5-triazin-2-yl]amino]-1-oxo-3,6-disulfonato-2-naphthylidene]hydrazino]benzoate | tetrasodium;2-[(2Z)-2-[8-[[4-chloro-6-[4-(6-methyl-7-sulfonato-1,3-benzothiazol-2-yl)anilino]-1,3,5-triazin-2-yl]amino]-1-oxo-3,6-disulfonato-2-naphthylidene]hydrazino]benzoate | 987.2 |
| 5485805 | C43H26N8Na4O14S4 | tetrasodium;(3E)-3-[[4-[[4-(4-amino-3-sulfonato-phenyl)azo-6-sulfonato-1-naphthyl]azo]-6-sulfonato-1-naphthyl]hydrazono]-7-benzamido-4-oxo-naphthalene-2-sulfonate | tetrasodium;(3E)-3-[[4-[[4-(4-amino-3-sulfonato-phenyl)azo-6-sulfonato-1-naphthyl]azo]-6-sulfonato-1-naphthyl]hydrazono]-7-benzamido-4-oxo-naphthalene-2-sulfonate | 1098.9 |
| 5485812 | C31H18ClFN10Na4O13S4 | tetrasodium;(3Z)-5-amino-3-[[5-[[4-(3-chloroanilino)-6-fluoro-1,3,5-triazin-2-yl]amino]-2-sulfonato-phenyl]hydrazono]-4-oxo-6-(4-sulfonatophenyl)azo-naphthalene-2,7-disulfonate | tetrasodium;(3Z)-5-amino-3-[[5-[[4-(3-chloroanilino)-6-fluoro-1,3,5-triazin-2-yl]amino]-2-sulfonato-phenyl]hydrazono]-4-oxo-6-(4-sulfonatophenyl)azo-naphthalene-2,7-disulfonate | 1013.2 |
| 5485821 | C17H14N5NaO7S | sodium 4-[3-methyl-4-[(2Z)-2-(3-methyl-5-nitro-6-oxo-cyclohexa-2,4-dien-1-ylidene)hydrazino]-5-oxo-4H-pyrazol-1-yl]benzenesulfonate | sodium 4-[3-methyl-4-[(2Z)-2-(3-methyl-5-nitro-6-oxo-cyclohexa-2,4-dien-1-ylidene)hydrazino]-5-oxo-4H-pyrazol-1-yl]benzenesulfonate | 455.4 |
| 5485827 | C22H16Na2O4 | disodium;2-[(E)-(3-methyl-4-oxido-phenyl)-(3-methyl-4-oxo-cyclohexa-2,5-dien-1-ylidene)methyl]benzoate | 62654-08-4 | 390.3 |
| 5485873 | C16H12ClN4NaO4S | sodium 5-[2-(4-amino-2-chloro-phenyl)hydrazino]-6-imino-4-oxo-naphthalene-2-sulfonate | sodium 5-[2-(4-amino-2-chloro-phenyl)hydrazino]-6-imino-4-oxo-naphthalene-2-sulfonate | 414.8 |
| 5485875 | CHN6NaO2 | sodium N-(1,2,3-triaza-4-azanidacyclopenta-2,5-dien-5-yl)nitramide | Sodium N-nitro-1H-tetrazol-5-amide | 152.05 |
| 5485878 | C32H20Cl3CrN8Na2O7S | chromic;disodium;(5Z)-3-chloro-5-(3-methyl-5-oxido-1-phenyl-pyrazol-4-yl)azanidylimino-6-oxo-cyclohexa-1,3-diene-1-sulfonate;4-(3,5-dichloro-2-oxido-phenyl)azo-3-methyl-1-phenyl-pyrazol-5-olate | chromic;disodium;(5Z)-3-chloro-5-(3-methyl-5-oxido-1-phenyl-pyrazol-4-yl)azanidylimino-6-oxo-cyclohexa-1,3-diene-1-sulfonate;4-(3,5-dichloro-2-oxido-phenyl)azo-3-methyl-1-phenyl-pyrazol-5-olate | 864.9 |
| 5485905 | C16H10N3NaO3 | sodium 2-[(2Z)-2-(8-oxo-5-quinolylidene)hydrazino]benzoate | sodium 2-[(2Z)-2-(8-oxo-5-quinolylidene)hydrazino]benzoate | 315.26 |
| 5485911 | C20H11NNa2O6S | disodium;(3E)-3-(6-oxocyclohexa-2,4-dien-1-ylidene)-8-sulfonato-4H-benzo[f]quinoline-1-carboxylate | disodium;(3E)-3-(6-oxocyclohexa-2,4-dien-1-ylidene)-8-sulfonato-4H-benzo[f]quinoline-1-carboxylate | 439.4 |
| 5485927 | C23H16N4Na2O8S2 | disodium;5-[2-(4-benzamido-2-sulfonato-phenyl)hydrazino]-6-imino-4-oxo-naphthalene-2-sulfonate | disodium;5-[2-(4-benzamido-2-sulfonato-phenyl)hydrazino]-6-imino-4-oxo-naphthalene-2-sulfonate | 586.5 |
| 5485944 | C20H8CuN2Na4O15S4 | copper;tetrasodium;8-oxido-7-[(2E)-2-(5-oxido-2-oxo-7-sulfonato-1-naphthylidene)hydrazino]naphthalene-1,3,5-trisulfonate | copper;tetrasodium;8-oxido-7-[(2E)-2-(5-oxido-2-oxo-7-sulfonato-1-naphthylidene)hydrazino]naphthalene-1,3,5-trisulfonate | 800.1 |
| 5485947 | C20H12NNaO6S | sodium (3E)-1-carboxy-3-(6-oxocyclohexa-2,4-dien-1-ylidene)-4H-benzo[f]quinoline-8-sulfonate | sodium (3E)-1-carboxy-3-(6-oxocyclohexa-2,4-dien-1-ylidene)-4H-benzo[f]quinoline-8-sulfonate | 417.4 |
| 5485953 | C20H11N2Na3O11S3 | trisodium;3-hydroxy-4-[(2E)-2-(2-oxo-4-sulfonato-1-naphthylidene)hydrazino]naphthalene-2,7-disulfonate | trisodium;3-hydroxy-4-[(2E)-2-(2-oxo-4-sulfonato-1-naphthylidene)hydrazino]naphthalene-2,7-disulfonate | 620.5 |
| 5485955 | C18H14ClN2NaO4S | sodium 5-chloro-4-ethyl-2-[(2Z)-2-(2-oxo-1-naphthylidene)hydrazino]benzenesulfonate | sodium 5-chloro-4-ethyl-2-[(2Z)-2-(2-oxo-1-naphthylidene)hydrazino]benzenesulfonate | 412.8 |
| 5485968 | C6H4NNaO4 | sodium 5-hydroxy-2-nitro-phenolate | 63512-41-4 | 177.09 |
| 5485977 | C22H12N6Na2O14S2 | disodium;4-[(2Z)-2-[3-[(2E)-2-(2,4-dinitro-6-oxo-cyclohexa-2,4-dien-1-ylidene)hydrazino]-4-hydroxy-6-oxo-cyclohexa-2,4-dien-1-ylidene]hydrazino]-5-hydroxy-naphthalene-2,7-disulfonate | disodium;4-[(2Z)-2-[3-[(2E)-2-(2,4-dinitro-6-oxo-cyclohexa-2,4-dien-1-ylidene)hydrazino]-4-hydroxy-6-oxo-cyclohexa-2,4-dien-1-ylidene]hydrazino]-5-hydroxy-naphthalene-2,7-disulfonate | 694.5 |
| 5485979 | C6H4N3NaO5 | sodium 2-amino-3,5-dinitro-phenolate | Phenol, 2-amino-3,5-dinitro-, monosodium salt | 221.10 |
| 5485981 | C10H5N3Na2O7S | disodium;7-nitro-3-oxido-4-(2-oxohydrazino)naphthalene-1-sulfonate | 63589-21-9 | 357.21 |
| 5485983 | C16H10N2Na2O9S2 | disodium;4-hydroxy-5-[(2Z)-2-(2-hydroxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)hydrazino]naphthalene-2,7-disulfonate | disodium;4-hydroxy-5-[(2Z)-2-(2-hydroxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)hydrazino]naphthalene-2,7-disulfonate | 484.4 |
| 5485990 | C27H18N4Na2O8 | disodium;5-[[3-carboxylato-4-[(2Z)-2-(2-hydroxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)hydrazino]phenyl]methyl]-2-[(2E)-2-(2-hydroxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)hydrazino]benzoate | disodium;5-[[3-carboxylato-4-[(2Z)-2-(2-hydroxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)hydrazino]phenyl]methyl]-2-[(2E)-2-(2-hydroxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)hydrazino]benzoate | 572.4 |
| 5486006 | C34H25N6NaO19S4 | sodium (6E)-4-hydroxy-6-[[4-[hydroxy-[(Z)-[(4Z)-4-[(Z)-(8-hydroxy-1-oxo-3,6-disulfo-2-naphthylidene)hydrazono]-3-methoxy-cyclohexa-2,5-dien-1-ylidene]amino]amino]-2-methoxy-phenyl]hydrazono]-5-oxo-7-sulfo-naphthalene-2-sulfonate | sodium (6E)-4-hydroxy-6-[[4-[hydroxy-[(Z)-[(4Z)-4-[(Z)-(8-hydroxy-1-oxo-3,6-disulfo-2-naphthylidene)hydrazono]-3-methoxy-cyclohexa-2,5-dien-1-ylidene]amino]amino]-2-methoxy-phenyl]hydrazono]-5-oxo-7-sulfo-naphthalene-2-sulfonate | 972.8 |
| 5486324 | C26H17ClN7Na3O11S3 | trisodium;(3Z)-7-[[4-chloro-6-(3-sulfonatoanilino)-1,3,5-triazin-2-yl]amino]-3-[(4-methoxy-2-sulfonato-phenyl)hydrazono]-4-oxo-naphthalene-2-sulfonate | trisodium;(3Z)-7-[[4-chloro-6-(3-sulfonatoanilino)-1,3,5-triazin-2-yl]amino]-3-[(4-methoxy-2-sulfonato-phenyl)hydrazono]-4-oxo-naphthalene-2-sulfonate | 804.1 |
| 5486342 | C19H12N4Na2O7S | disodium;2-[(2E)-2-[2-hydroxy-6-oxo-4-(3-sulfonatophenyl)azo-cyclohexa-2,4-dien-1-ylidene]hydrazino]benzoate | disodium;2-[(2E)-2-[2-hydroxy-6-oxo-4-(3-sulfonatophenyl)azo-cyclohexa-2,4-dien-1-ylidene]hydrazino]benzoate | 486.4 |
| 5486349 | C34H28N8Na2O6S | disodium;(3Z)-3-[[4-[4-[2,6-diamino-3-methyl-5-(4-sulfonatophenyl)azo-phenyl]azo-3-methyl-phenyl]-2-methyl-phenyl]hydrazono]-6-oxo-cyclohexa-1,4-diene-1-carboxylate | disodium;(3Z)-3-[[4-[4-[2,6-diamino-3-methyl-5-(4-sulfonatophenyl)azo-phenyl]azo-3-methyl-phenyl]-2-methyl-phenyl]hydrazono]-6-oxo-cyclohexa-1,4-diene-1-carboxylate | 722.7 |
| 5486376 | C25H12Cl2N9Na5O16S5 | pentasodium;(3E)-5-amino-3-[[5-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-2-sulfonato-phenyl]hydrazono]-6-(2,5-disulfonatophenyl)azo-4-oxo-naphthalene-2,7-disulfonate | pentasodium;(3E)-5-amino-3-[[5-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-2-sulfonato-phenyl]hydrazono]-6-(2,5-disulfonatophenyl)azo-4-oxo-naphthalene-2,7-disulfonate | 1040.6 |
| 5486379 | C35H24N9Na3O12S3 | trisodium;(6Z)-4-amino-3-[4-[[4-[(2E)-2-(4-amino-6-oxo-cyclohexa-2,4-dien-1-ylidene)hydrazino]phenyl]carbamoyl]phenyl]azo-5-oxo-6-[(4-sulfonatophenyl)hydrazono]naphthalene-2,7-disulfonate | trisodium;(6Z)-4-amino-3-[4-[[4-[(2E)-2-(4-amino-6-oxo-cyclohexa-2,4-dien-1-ylidene)hydrazino]phenyl]carbamoyl]phenyl]azo-5-oxo-6-[(4-sulfonatophenyl)hydrazono]naphthalene-2,7-disulfonate | 927.8 |
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.