Chlorine + Oxygen Compounds (Cl + O)
Browse all compounds containing Chlorine + 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: 1,479,729
Showing 1,183,301 - 1,183,350 of 1,479,729
Page 23667 of 29,595
| CID | Formula | IUPAC Name | Traditional Name | Mol. Weight |
|---|---|---|---|---|
| 5519233 | C28H24ClN5O3S | methyl 4-[(7S)-2-[(2-chlorophenyl)methylsulfanyl]-5-methyl-6-(phenylcarbamoyl)-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidin-7-yl]benzoate | methyl 4-[(7S)-2-[(2-chlorophenyl)methylsulfanyl]-5-methyl-6-(phenylcarbamoyl)-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidin-7-yl]benzoate | 546.0 |
| 5519234 | C28H23ClN6OS | (7R)-2-[(2-chlorophenyl)methylsulfanyl]-7-(1H-indol-3-yl)-5-methyl-N-phenyl-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide | (7R)-2-[(2-chlorophenyl)methylsulfanyl]-7-(1H-indol-3-yl)-5-methyl-N-phenyl-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide | 527.0 |
| 5519235 | C28H23ClN6OS | (7S)-2-[(2-chlorophenyl)methylsulfanyl]-7-(1H-indol-3-yl)-5-methyl-N-phenyl-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide | (7S)-2-[(2-chlorophenyl)methylsulfanyl]-7-(1H-indol-3-yl)-5-methyl-N-phenyl-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide | 527.0 |
| 5519236 | C28H26ClN5O2S | (7S)-2-[(2-chlorophenyl)methylsulfanyl]-7-(3-methoxyphenyl)-5-methyl-N-(m-tolyl)-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide | (7S)-2-[(2-chlorophenyl)methylsulfanyl]-7-(3-methoxyphenyl)-5-methyl-N-(m-tolyl)-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide | 532.1 |
| 5519237 | C28H26ClN5O2S | (7R)-2-[(2-chlorophenyl)methylsulfanyl]-7-(3-methoxyphenyl)-5-methyl-N-(m-tolyl)-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide | (7R)-2-[(2-chlorophenyl)methylsulfanyl]-7-(3-methoxyphenyl)-5-methyl-N-(m-tolyl)-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide | 532.1 |
| 5519238 | C28H26ClN5O2S | (7S)-2-[(2-chlorophenyl)methylsulfanyl]-7-(2-methoxyphenyl)-5-methyl-N-(m-tolyl)-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide | (7S)-2-[(2-chlorophenyl)methylsulfanyl]-7-(2-methoxyphenyl)-5-methyl-N-(m-tolyl)-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide | 532.1 |
| 5519239 | C28H26ClN5O2S | (7R)-2-[(2-chlorophenyl)methylsulfanyl]-7-(2-methoxyphenyl)-5-methyl-N-(m-tolyl)-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide | (7R)-2-[(2-chlorophenyl)methylsulfanyl]-7-(2-methoxyphenyl)-5-methyl-N-(m-tolyl)-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide | 532.1 |
| 5519240 | C30H30ClN5O4S | (7S)-2-[(2-chlorophenyl)methylsulfanyl]-5-methyl-N-(m-tolyl)-7-(3,4,5-trimethoxyphenyl)-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide | (7S)-2-[(2-chlorophenyl)methylsulfanyl]-5-methyl-N-(m-tolyl)-7-(3,4,5-trimethoxyphenyl)-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide | 592.1 |
| 5519241 | C30H30ClN5O4S | (7R)-2-[(2-chlorophenyl)methylsulfanyl]-5-methyl-N-(m-tolyl)-7-(3,4,5-trimethoxyphenyl)-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide | (7R)-2-[(2-chlorophenyl)methylsulfanyl]-5-methyl-N-(m-tolyl)-7-(3,4,5-trimethoxyphenyl)-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide | 592.1 |
| 5519242 | C29H25ClN6OS | (7S)-2-[(2-chlorophenyl)methylsulfanyl]-7-(1H-indol-3-yl)-5-methyl-N-(m-tolyl)-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide | (7S)-2-[(2-chlorophenyl)methylsulfanyl]-7-(1H-indol-3-yl)-5-methyl-N-(m-tolyl)-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide | 541.1 |
| 5519243 | C29H25ClN6OS | (7R)-2-[(2-chlorophenyl)methylsulfanyl]-7-(1H-indol-3-yl)-5-methyl-N-(m-tolyl)-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide | (7R)-2-[(2-chlorophenyl)methylsulfanyl]-7-(1H-indol-3-yl)-5-methyl-N-(m-tolyl)-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide | 541.1 |
| 5519244 | C29H25ClN6OS | (7S)-2-[(2-chlorophenyl)methylsulfanyl]-7-(1H-indol-3-yl)-5-methyl-N-(o-tolyl)-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide | (7S)-2-[(2-chlorophenyl)methylsulfanyl]-7-(1H-indol-3-yl)-5-methyl-N-(o-tolyl)-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide | 541.1 |
| 5519245 | C29H25ClN6OS | (7R)-2-[(2-chlorophenyl)methylsulfanyl]-7-(1H-indol-3-yl)-5-methyl-N-(o-tolyl)-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide | (7R)-2-[(2-chlorophenyl)methylsulfanyl]-7-(1H-indol-3-yl)-5-methyl-N-(o-tolyl)-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide | 541.1 |
| 5519298 | C16H12ClN5O2S | (Z)-N-[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]-1-(3-nitrophenyl)methanimine | (Z)-N-[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]-1-(3-nitrophenyl)methanimine | 373.8 |
| 5519299 | C16H12BrClN4OS | (6Z)-4-bromo-6-[[[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]amino]methylene]cyclohexa-2,4-dien-1-one | (6Z)-4-bromo-6-[[[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]amino]methylene]cyclohexa-2,4-dien-1-one | 423.7 |
| 5519300 | C16H12BrClN4OS | (6Z)-4-bromo-6-[[[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]amino]methylene]cyclohexa-2,4-dien-1-one | (6Z)-4-bromo-6-[[[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]amino]methylene]cyclohexa-2,4-dien-1-one | 423.7 |
| 5519301 | C18H17ClN4OS | (Z)-N-[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]-1-(4-ethoxyphenyl)methanimine | (Z)-N-[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]-1-(4-ethoxyphenyl)methanimine | 372.9 |
| 5519302 | C18H17ClN4O2S | (4Z)-4-[[[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]amino]methylene]-2-ethoxy-cyclohexa-2,5-dien-1-one | (4Z)-4-[[[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]amino]methylene]-2-ethoxy-cyclohexa-2,5-dien-1-one | 388.9 |
| 5519303 | C18H17ClN4O2S | (4Z)-4-[[[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]amino]methylene]-2-ethoxy-cyclohexa-2,5-dien-1-one | (4Z)-4-[[[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]amino]methylene]-2-ethoxy-cyclohexa-2,5-dien-1-one | 388.9 |
| 5519304 | C17H15ClN4O2S | (6E)-6-[[[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]amino]methylene]-2-methoxy-cyclohexa-2,4-dien-1-one | (6E)-6-[[[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]amino]methylene]-2-methoxy-cyclohexa-2,4-dien-1-one | 374.8 |
| 5519305 | C17H15ClN4O2S | (6E)-6-[[[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]amino]methylene]-2-methoxy-cyclohexa-2,4-dien-1-one | (6E)-6-[[[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]amino]methylene]-2-methoxy-cyclohexa-2,4-dien-1-one | 374.8 |
| 5519307 | C17H15ClN4OS | (Z)-N-[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]-1-(3-methoxyphenyl)methanimine | (Z)-N-[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]-1-(3-methoxyphenyl)methanimine | 358.8 |
| 5519308 | C18H17ClN4O2S | (Z)-N-[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]-1-(2,4-dimethoxyphenyl)methanimine | (Z)-N-[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]-1-(2,4-dimethoxyphenyl)methanimine | 388.9 |
| 5519309 | C18H17ClN4O2S | (Z)-N-[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]-1-(2,5-dimethoxyphenyl)methanimine | (Z)-N-[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]-1-(2,5-dimethoxyphenyl)methanimine | 388.9 |
| 5519310 | C19H19ClN4O2S | (Z)-N-[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]-1-(4-ethoxy-3-methoxy-phenyl)methanimine | (Z)-N-[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]-1-(4-ethoxy-3-methoxy-phenyl)methanimine | 402.9 |
| 5519311 | C16H13ClN4OS | (6Z)-6-[[[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]amino]methylene]cyclohexa-2,4-dien-1-one | (6Z)-6-[[[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]amino]methylene]cyclohexa-2,4-dien-1-one | 344.8 |
| 5519312 | C16H13ClN4OS | (6Z)-6-[[[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]amino]methylene]cyclohexa-2,4-dien-1-one | (6Z)-6-[[[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]amino]methylene]cyclohexa-2,4-dien-1-one | 344.8 |
| 5519313 | C16H13ClN4OS | 4-[[[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]amino]methylene]cyclohexa-2,5-dien-1-one | 4-[[[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]amino]methylene]cyclohexa-2,5-dien-1-one | 344.8 |
| 5519314 | C16H13ClN4OS | 4-[[[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]amino]methylene]cyclohexa-2,5-dien-1-one | 4-[[[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]amino]methylene]cyclohexa-2,5-dien-1-one | 344.8 |
| 5519315 | C16H12BrClN4O2S | (6Z)-4-bromo-6-[[[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]amino]methylene]-3-hydroxy-cyclohexa-2,4-dien-1-one | (6Z)-4-bromo-6-[[[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]amino]methylene]-3-hydroxy-cyclohexa-2,4-dien-1-one | 439.7 |
| 5519316 | C16H12BrClN4O2S | (6Z)-4-bromo-6-[[[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]amino]methylene]-3-hydroxy-cyclohexa-2,4-dien-1-one | (6Z)-4-bromo-6-[[[3-[(4-chlorophenyl)methylsulfanyl]-1,2,4-triazol-4-yl]amino]methylene]-3-hydroxy-cyclohexa-2,4-dien-1-one | 439.7 |
| 5519317 | C17H14BrClN4O2S | (6E)-4-bromo-6-[[[3-[(4-chlorophenyl)methylsulfanyl]-5-methyl-1,2,4-triazol-4-yl]amino]methylene]-3-hydroxy-cyclohexa-2,4-dien-1-one | (6E)-4-bromo-6-[[[3-[(4-chlorophenyl)methylsulfanyl]-5-methyl-1,2,4-triazol-4-yl]amino]methylene]-3-hydroxy-cyclohexa-2,4-dien-1-one | 453.7 |
| 5519318 | C17H14BrClN4O2S | (6E)-4-bromo-6-[[[3-[(4-chlorophenyl)methylsulfanyl]-5-methyl-1,2,4-triazol-4-yl]amino]methylene]-3-hydroxy-cyclohexa-2,4-dien-1-one | (6E)-4-bromo-6-[[[3-[(4-chlorophenyl)methylsulfanyl]-5-methyl-1,2,4-triazol-4-yl]amino]methylene]-3-hydroxy-cyclohexa-2,4-dien-1-one | 453.7 |
| 5519320 | C19H19ClN4O2S | (4E)-4-[[[3-[(4-chlorophenyl)methylsulfanyl]-5-propyl-1,2,4-triazol-4-yl]amino]methylene]-3-hydroxy-cyclohexa-2,5-dien-1-one | (4E)-4-[[[3-[(4-chlorophenyl)methylsulfanyl]-5-propyl-1,2,4-triazol-4-yl]amino]methylene]-3-hydroxy-cyclohexa-2,5-dien-1-one | 402.9 |
| 5519321 | C19H19ClN4O2S | (4E)-4-[[[3-[(4-chlorophenyl)methylsulfanyl]-5-propyl-1,2,4-triazol-4-yl]amino]methylene]-3-hydroxy-cyclohexa-2,5-dien-1-one | (4E)-4-[[[3-[(4-chlorophenyl)methylsulfanyl]-5-propyl-1,2,4-triazol-4-yl]amino]methylene]-3-hydroxy-cyclohexa-2,5-dien-1-one | 402.9 |
| 5519324 | C18H19ClN4OS | (Z)-N-[3-[(4-chlorophenyl)methylsulfanyl]-5-propyl-1,2,4-triazol-4-yl]-1-(5-methyl-2-furyl)methanimine | (Z)-N-[3-[(4-chlorophenyl)methylsulfanyl]-5-propyl-1,2,4-triazol-4-yl]-1-(5-methyl-2-furyl)methanimine | 374.9 |
| 5519325 | C17H16ClN5O3S | (Z)-N-[3-[(4-chlorophenyl)methylsulfanyl]-5-propyl-1,2,4-triazol-4-yl]-1-(5-nitro-2-furyl)methanimine | (Z)-N-[3-[(4-chlorophenyl)methylsulfanyl]-5-propyl-1,2,4-triazol-4-yl]-1-(5-nitro-2-furyl)methanimine | 405.9 |
| 5519370 | C13H10Cl2N4O3S | 3-[4-[(Z)-(2,4-dichlorophenyl)methyleneamino]-5-oxo-3-thioxo-2H-1,2,4-triazin-6-yl]propanoic acid | 3-[4-[(Z)-(2,4-dichlorophenyl)methyleneamino]-5-oxo-3-thioxo-2H-1,2,4-triazin-6-yl]propanoic acid | 373.2 |
| 5519371 | C13H11ClN4O3S | 3-[4-[(Z)-(4-chlorophenyl)methyleneamino]-5-oxo-3-thioxo-2H-1,2,4-triazin-6-yl]propanoic acid | 3-[4-[(Z)-(4-chlorophenyl)methyleneamino]-5-oxo-3-thioxo-2H-1,2,4-triazin-6-yl]propanoic acid | 338.77 |
| 5519375 | C17H8BrCl2N3O2S | (5Z)-5-(5-bromo-2-oxo-indolin-3-ylidene)-2-(2,3-dichloroanilino)thiazol-4-one | (5Z)-5-(5-bromo-2-oxo-indolin-3-ylidene)-2-(2,3-dichloroanilino)thiazol-4-one | 469.1 |
| 5519379 | C20H18ClN5O4 | N-[(7R)-7-(4-chlorophenyl)-5-oxo-6,7-dihydro-1H-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl]-3,5-dimethoxy-benzamide | N-[(7R)-7-(4-chlorophenyl)-5-oxo-6,7-dihydro-1H-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl]-3,5-dimethoxy-benzamide | 427.8 |
| 5519380 | C20H18ClN5O4 | N-[(7S)-7-(4-chlorophenyl)-5-oxo-6,7-dihydro-1H-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl]-3,5-dimethoxy-benzamide | N-[(7S)-7-(4-chlorophenyl)-5-oxo-6,7-dihydro-1H-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl]-3,5-dimethoxy-benzamide | 427.8 |
| 5519386 | C26H23ClN6O4S | N-[4-[[(7R)-5-(4-chlorophenyl)-7-(4-methoxyphenyl)-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl]sulfamoyl]phenyl]acetamide | N-[4-[[(7R)-5-(4-chlorophenyl)-7-(4-methoxyphenyl)-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl]sulfamoyl]phenyl]acetamide | 551.0 |
| 5519387 | C26H23ClN6O4S | N-[4-[[(7S)-5-(4-chlorophenyl)-7-(4-methoxyphenyl)-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl]sulfamoyl]phenyl]acetamide | N-[4-[[(7S)-5-(4-chlorophenyl)-7-(4-methoxyphenyl)-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl]sulfamoyl]phenyl]acetamide | 551.0 |
| 5519388 | C25H21ClN4O4S | 2-[3-(4-chlorophenyl)-4-oxo-quinazolin-2-yl]sulfanyl-N'-[(1E)-1-(3-methoxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)ethyl]acetohydrazide | 2-[3-(4-chlorophenyl)-4-oxo-quinazolin-2-yl]sulfanyl-N'-[(1E)-1-(3-methoxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)ethyl]acetohydrazide | 509.0 |
| 5519389 | C23H19ClN4O4 | N-[2-[2-[(E)-[1-(2-chlorophenyl)-2,4,6-trioxo-hexahydropyrimidin-5-ylidene]methyl]-1H-indol-3-yl]ethyl]acetamide | N-[2-[2-[(E)-[1-(2-chlorophenyl)-2,4,6-trioxo-hexahydropyrimidin-5-ylidene]methyl]-1H-indol-3-yl]ethyl]acetamide | 450.9 |
| 5519403 | C26H21ClN6O5 | [4-[(Z)-[[7-[(2-chlorophenyl)methyl]-1,3-dimethyl-2,6-dioxo-purin-8-yl]hydrazono]methyl]phenyl] furan-2-carboxylate | [4-[(Z)-[[7-[(2-chlorophenyl)methyl]-1,3-dimethyl-2,6-dioxo-purin-8-yl]hydrazono]methyl]phenyl] furan-2-carboxylate | 532.9 |
| 5519404 | C26H21ClN6O5 | [4-[(Z)-[[7-[(2-chlorophenyl)methyl]-1,3-dimethyl-2,6-dioxo-purin-8-yl]hydrazono]methyl]phenyl] furan-2-carboxylate | [4-[(Z)-[[7-[(2-chlorophenyl)methyl]-1,3-dimethyl-2,6-dioxo-purin-8-yl]hydrazono]methyl]phenyl] furan-2-carboxylate | 532.9 |
| 5519406 | C21H25ClN6O2 | 7-[(4-chlorophenyl)methyl]-1,3-dimethyl-8-[(2Z)-2-[(3R)-3-methylcyclohexylidene]hydrazino]purine-2,6-dione | 7-[(4-chlorophenyl)methyl]-1,3-dimethyl-8-[(2Z)-2-[(3R)-3-methylcyclohexylidene]hydrazino]purine-2,6-dione | 428.9 |
| 5519407 | C23H16ClN5O3S | (6Z)-6-[[[2-amino-3-(3-chlorophenyl)sulfonyl-pyrrolo[3,2-b]quinoxalin-1-yl]amino]methylene]cyclohexa-2,4-dien-1-one | (6Z)-6-[[[2-amino-3-(3-chlorophenyl)sulfonyl-pyrrolo[3,2-b]quinoxalin-1-yl]amino]methylene]cyclohexa-2,4-dien-1-one | 477.9 |
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.