CompoundLookup Search compounds by elements

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 1,186,801 - 1,186,850 of 1,479,729
Page 23737 of 29,595
CID Formula IUPAC Name Traditional Name Mol. Weight
5535030 C20H20ClN5O2S 2-[[5-(4-chlorophenyl)-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]-N-[(E)-1-(3-hydroxyphenyl)ethylideneamino]acetamide 2-[[5-(4-chlorophenyl)-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]-N-[(E)-1-(3-hydroxyphenyl)ethylideneamino]acetamide 429.9
5535031 C21H22ClN5O4S 2-[[5-(4-chlorophenyl)-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]-N'-[(3,5-dimethoxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)methyl]acetohydrazide 2-[[5-(4-chlorophenyl)-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]-N'-[(3,5-dimethoxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)methyl]acetohydrazide 475.9
5535032 C21H22ClN5O4S 2-[[5-(4-chlorophenyl)-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]-N'-[(3,5-dimethoxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)methyl]acetohydrazide 2-[[5-(4-chlorophenyl)-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]-N'-[(3,5-dimethoxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)methyl]acetohydrazide 475.9
5535033 C20H18ClN5O3S 2-[(Z)-[[2-[[5-(4-chlorophenyl)-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]acetyl]hydrazono]methyl]benzoic acid 2-[(Z)-[[2-[[5-(4-chlorophenyl)-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]acetyl]hydrazono]methyl]benzoic acid 443.9
5535034 C19H18ClN5O3S 2-[[5-(4-chlorophenyl)-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]-N'-[(Z)-(3-hydroxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)methyl]acetohydrazide 2-[[5-(4-chlorophenyl)-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]-N'-[(Z)-(3-hydroxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)methyl]acetohydrazide 431.9
5535035 C19H18ClN5O3S 2-[[5-(4-chlorophenyl)-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]-N'-[(Z)-(3-hydroxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)methyl]acetohydrazide 2-[[5-(4-chlorophenyl)-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]-N'-[(Z)-(3-hydroxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)methyl]acetohydrazide 431.9
5535036 C20H18ClN5O3S 4-[(Z)-[[2-[[5-(4-chlorophenyl)-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]acetyl]hydrazono]methyl]benzoic acid 4-[(Z)-[[2-[[5-(4-chlorophenyl)-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]acetyl]hydrazono]methyl]benzoic acid 443.9
5535037 C19H16Cl2N6O3S N-[(Z)-(4-chloro-3-nitro-phenyl)methyleneamino]-2-[[5-(4-chlorophenyl)-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]acetamide N-[(Z)-(4-chloro-3-nitro-phenyl)methyleneamino]-2-[[5-(4-chlorophenyl)-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]acetamide 479.3
5535038 C20H19BrClN5O3S N'-[(Z)-(3-bromo-5-methoxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)methyl]-2-[[5-(4-chlorophenyl)-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]acetohydrazide N'-[(Z)-(3-bromo-5-methoxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)methyl]-2-[[5-(4-chlorophenyl)-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]acetohydrazide 524.8
5535039 C20H19BrClN5O3S N'-[(Z)-(3-bromo-5-methoxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)methyl]-2-[[5-(4-chlorophenyl)-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]acetohydrazide N'-[(Z)-(3-bromo-5-methoxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)methyl]-2-[[5-(4-chlorophenyl)-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]acetohydrazide 524.8
5535040 C21H22ClN5O3S 2-[[5-(4-chlorophenyl)-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]-N'-[(1Z)-1-(3-methoxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)ethyl]acetohydrazide 2-[[5-(4-chlorophenyl)-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]-N'-[(1Z)-1-(3-methoxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)ethyl]acetohydrazide 459.9
5535041 C20H20ClN5O2S 2-[[5-(4-chlorophenyl)-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]-N'-[1-(4-oxocyclohexa-2,5-dien-1-ylidene)ethyl]acetohydrazide 2-[[5-(4-chlorophenyl)-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]-N'-[1-(4-oxocyclohexa-2,5-dien-1-ylidene)ethyl]acetohydrazide 429.9
5535044 C26H23ClN2O5S methyl 2-[(2S,3E)-3-[(4-chlorophenyl)-hydroxy-methylene]-2-(4-isopropylphenyl)-4,5-dioxo-pyrrolidin-1-yl]-4-methyl-thiazole-5-carboxylate methyl 2-[(2S,3E)-3-[(4-chlorophenyl)-hydroxy-methylene]-2-(4-isopropylphenyl)-4,5-dioxo-pyrrolidin-1-yl]-4-methyl-thiazole-5-carboxylate 511.0
5535045 C26H23ClN2O5S methyl 2-[(2R,3E)-3-[(4-chlorophenyl)-hydroxy-methylene]-2-(4-isopropylphenyl)-4,5-dioxo-pyrrolidin-1-yl]-4-methyl-thiazole-5-carboxylate methyl 2-[(2R,3E)-3-[(4-chlorophenyl)-hydroxy-methylene]-2-(4-isopropylphenyl)-4,5-dioxo-pyrrolidin-1-yl]-4-methyl-thiazole-5-carboxylate 511.0
5535051 C22H22ClN5O2S N'-[(Z)-(5-allyl-6-oxo-cyclohexa-2,4-dien-1-ylidene)methyl]-2-[[5-(4-chlorophenyl)-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]acetohydrazide N'-[(Z)-(5-allyl-6-oxo-cyclohexa-2,4-dien-1-ylidene)methyl]-2-[[5-(4-chlorophenyl)-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]acetohydrazide 456.0
5535052 C22H22ClN5O2S N'-[(Z)-(5-allyl-6-oxo-cyclohexa-2,4-dien-1-ylidene)methyl]-2-[[5-(4-chlorophenyl)-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]acetohydrazide N'-[(Z)-(5-allyl-6-oxo-cyclohexa-2,4-dien-1-ylidene)methyl]-2-[[5-(4-chlorophenyl)-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]acetohydrazide 456.0
5535053 C19H17BrClN5O2S N'-[(E)-(3-bromo-6-oxo-cyclohexa-2,4-dien-1-ylidene)methyl]-2-[[5-(4-chlorophenyl)-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]acetohydrazide N'-[(E)-(3-bromo-6-oxo-cyclohexa-2,4-dien-1-ylidene)methyl]-2-[[5-(4-chlorophenyl)-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]acetohydrazide 494.8
5535054 C21H20ClN5O4S 2-[2-[(Z)-[[2-[[5-(4-chlorophenyl)-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]acetyl]hydrazono]methyl]phenoxy]acetic acid MLS000778004 473.9
5535055 C20H20ClN5O3S 2-[[5-(4-chlorophenyl)-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]-N'-[(Z)-(5-methoxy-6-oxo-cyclohexa-2,4-dien-1-ylidene)methyl]acetohydrazide 2-[[5-(4-chlorophenyl)-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]-N'-[(Z)-(5-methoxy-6-oxo-cyclohexa-2,4-dien-1-ylidene)methyl]acetohydrazide 445.9
5535103 C26H23ClN4O4S 2-[3-(4-chlorophenyl)-4-oxo-quinazolin-2-yl]sulfanyl-N-[(E)-1-(3,4-dimethoxyphenyl)ethylideneamino]acetamide 2-[3-(4-chlorophenyl)-4-oxo-quinazolin-2-yl]sulfanyl-N-[(E)-1-(3,4-dimethoxyphenyl)ethylideneamino]acetamide 523.0
5535104 C22H17ClN4O3S 2-[3-(4-chlorophenyl)-4-oxo-quinazolin-2-yl]sulfanyl-N-[(Z)-1-(2-furyl)ethylideneamino]acetamide 2-[3-(4-chlorophenyl)-4-oxo-quinazolin-2-yl]sulfanyl-N-[(Z)-1-(2-furyl)ethylideneamino]acetamide 452.9
5535105 C22H17ClN4O3S 2-[3-(4-chlorophenyl)-4-oxo-quinazolin-2-yl]sulfanyl-N-[(E)-1-(2-furyl)ethylideneamino]acetamide STL308011 452.9
5535106 C22H17ClN4O2S2 2-[3-(4-chlorophenyl)-4-oxo-quinazolin-2-yl]sulfanyl-N-[(Z)-1-(2-thienyl)ethylideneamino]acetamide 2-[3-(4-chlorophenyl)-4-oxo-quinazolin-2-yl]sulfanyl-N-[(Z)-1-(2-thienyl)ethylideneamino]acetamide 469.0
5535126 C23H24Cl2N2O4 (4E,5R)-5-(2,4-dichlorophenyl)-1-[2-(dimethylamino)ethyl]-4-[hydroxy-(4-methoxy-3-methyl-phenyl)methylene]pyrrolidine-2,3-dione (4E,5R)-5-(2,4-dichlorophenyl)-1-[2-(dimethylamino)ethyl]-4-[hydroxy-(4-methoxy-3-methyl-phenyl)methylene]pyrrolidine-2,3-dione 463.3
5535127 C23H24Cl2N2O4 (4E,5S)-5-(2,4-dichlorophenyl)-1-[2-(dimethylamino)ethyl]-4-[hydroxy-(4-methoxy-3-methyl-phenyl)methylene]pyrrolidine-2,3-dione (4E,5S)-5-(2,4-dichlorophenyl)-1-[2-(dimethylamino)ethyl]-4-[hydroxy-(4-methoxy-3-methyl-phenyl)methylene]pyrrolidine-2,3-dione 463.3
5535137 C24H27ClN2O4 (4E,5S)-5-(4-chlorophenyl)-1-[3-(dimethylamino)propyl]-4-[hydroxy-(4-methoxy-3-methyl-phenyl)methylene]pyrrolidine-2,3-dione (4E,5S)-5-(4-chlorophenyl)-1-[3-(dimethylamino)propyl]-4-[hydroxy-(4-methoxy-3-methyl-phenyl)methylene]pyrrolidine-2,3-dione 442.9
5535138 C24H27ClN2O4 (4E,5R)-5-(4-chlorophenyl)-1-[3-(dimethylamino)propyl]-4-[hydroxy-(4-methoxy-3-methyl-phenyl)methylene]pyrrolidine-2,3-dione (4E,5R)-5-(4-chlorophenyl)-1-[3-(dimethylamino)propyl]-4-[hydroxy-(4-methoxy-3-methyl-phenyl)methylene]pyrrolidine-2,3-dione 442.9
5535147 C25H20Cl2N2O4 (4E,5R)-5-(2,4-dichlorophenyl)-4-[hydroxy-(4-methoxy-3-methyl-phenyl)methylene]-1-(3-pyridylmethyl)pyrrolidine-2,3-dione (4E,5R)-5-(2,4-dichlorophenyl)-4-[hydroxy-(4-methoxy-3-methyl-phenyl)methylene]-1-(3-pyridylmethyl)pyrrolidine-2,3-dione 483.3
5535148 C25H20Cl2N2O4 (4E,5S)-5-(2,4-dichlorophenyl)-4-[hydroxy-(4-methoxy-3-methyl-phenyl)methylene]-1-(3-pyridylmethyl)pyrrolidine-2,3-dione (4E,5S)-5-(2,4-dichlorophenyl)-4-[hydroxy-(4-methoxy-3-methyl-phenyl)methylene]-1-(3-pyridylmethyl)pyrrolidine-2,3-dione 483.3
5535166 C19H17ClN4O4S [4-[(Z)-[3-(2-chlorophenyl)-5-thioxo-1H-1,2,4-triazol-4-yl]iminomethyl]-2,6-dimethoxy-phenyl] acetate [4-[(Z)-[3-(2-chlorophenyl)-5-thioxo-1H-1,2,4-triazol-4-yl]iminomethyl]-2,6-dimethoxy-phenyl] acetate 432.9
5535167 C18H17ClN4O3S 3-(3-chlorophenyl)-4-[(Z)-(2,3,4-trimethoxyphenyl)methyleneamino]-1H-1,2,4-triazole-5-thione 3-(3-chlorophenyl)-4-[(Z)-(2,3,4-trimethoxyphenyl)methyleneamino]-1H-1,2,4-triazole-5-thione 404.9
5535168 C18H17ClN4O3S 3-(3-chlorophenyl)-4-[(Z)-(2,4,5-trimethoxyphenyl)methyleneamino]-1H-1,2,4-triazole-5-thione 3-(3-chlorophenyl)-4-[(Z)-(2,4,5-trimethoxyphenyl)methyleneamino]-1H-1,2,4-triazole-5-thione 404.9
5535169 C19H17ClN4O4S [4-[(Z)-[3-(3-chlorophenyl)-5-thioxo-1H-1,2,4-triazol-4-yl]iminomethyl]-2,6-dimethoxy-phenyl] acetate [4-[(Z)-[3-(3-chlorophenyl)-5-thioxo-1H-1,2,4-triazol-4-yl]iminomethyl]-2,6-dimethoxy-phenyl] acetate 432.9
5535170 C17H15ClN4O2S 3-(3-chlorophenyl)-4-[(Z)-(2,4-dimethoxyphenyl)methyleneamino]-1H-1,2,4-triazole-5-thione 3-(3-chlorophenyl)-4-[(Z)-(2,4-dimethoxyphenyl)methyleneamino]-1H-1,2,4-triazole-5-thione 374.8
5535172 C15H11ClN4O2S (4E)-4-[[[3-(3-chlorophenyl)-5-thioxo-1H-1,2,4-triazol-4-yl]amino]methylene]-3-hydroxy-cyclohexa-2,5-dien-1-one (4E)-4-[[[3-(3-chlorophenyl)-5-thioxo-1H-1,2,4-triazol-4-yl]amino]methylene]-3-hydroxy-cyclohexa-2,5-dien-1-one 346.8
5535173 C15H11ClN4O2S (4E)-4-[[[3-(3-chlorophenyl)-5-thioxo-1H-1,2,4-triazol-4-yl]amino]methylene]-3-hydroxy-cyclohexa-2,5-dien-1-one (4E)-4-[[[3-(3-chlorophenyl)-5-thioxo-1H-1,2,4-triazol-4-yl]amino]methylene]-3-hydroxy-cyclohexa-2,5-dien-1-one 346.8
5535183 C20H19ClN6O3S N-[(Z)-(4-chloro-3-nitro-phenyl)methyleneamino]-2-[[4-ethyl-5-(p-tolyl)-1,2,4-triazol-3-yl]sulfanyl]acetamide N'-[(Z)-(4-chloro-3-nitrophenyl)methylidene]-2-{[4-ethyl-5-(4-methylphenyl)-4H-1,2,4-triazol-3-yl]sulfanyl}acetohydrazide 458.9
5535223 C20H20ClN5OS N-[(Z)-(3-chlorophenyl)methyleneamino]-2-[[4-ethyl-5-(p-tolyl)-1,2,4-triazol-3-yl]sulfanyl]acetamide 497920-05-5 413.9
5535225 C22H16ClFN6OS 2-[[4-(4-chlorophenyl)-5-(4-pyridyl)-1,2,4-triazol-3-yl]sulfanyl]-N-[(Z)-(2-fluorophenyl)methyleneamino]acetamide 2-[[4-(4-chlorophenyl)-5-(4-pyridyl)-1,2,4-triazol-3-yl]sulfanyl]-N-[(Z)-(2-fluorophenyl)methyleneamino]acetamide 466.9
5535228 C25H22ClN5O4S 2-[[5-(4-chlorophenyl)-4-(4-ethoxyphenyl)-1,2,4-triazol-3-yl]sulfanyl]-N'-[(Z)-(3-hydroxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)methyl]acetohydrazide 2-[[5-(4-chlorophenyl)-4-(4-ethoxyphenyl)-1,2,4-triazol-3-yl]sulfanyl]-N'-[(Z)-(3-hydroxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)methyl]acetohydrazide 524.0
5535229 C25H22ClN5O4S 2-[[5-(4-chlorophenyl)-4-(4-ethoxyphenyl)-1,2,4-triazol-3-yl]sulfanyl]-N'-[(Z)-(3-hydroxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)methyl]acetohydrazide 2-[[5-(4-chlorophenyl)-4-(4-ethoxyphenyl)-1,2,4-triazol-3-yl]sulfanyl]-N'-[(Z)-(3-hydroxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)methyl]acetohydrazide 524.0
5535231 C23H18ClFN6OS N-[(Z)-(2-chloro-6-fluoro-phenyl)methyleneamino]-2-[[4-(p-tolyl)-5-(4-pyridyl)-1,2,4-triazol-3-yl]sulfanyl]acetamide N-[(Z)-(2-chloro-6-fluoro-phenyl)methyleneamino]-2-[[4-(p-tolyl)-5-(4-pyridyl)-1,2,4-triazol-3-yl]sulfanyl]acetamide 480.9
5535232 C25H22ClN5O4S 2-[[5-(4-chlorophenyl)-4-(4-ethoxyphenyl)-1,2,4-triazol-3-yl]sulfanyl]-N'-[(E)-(2-hydroxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)methyl]acetohydrazide 2-[[5-(4-chlorophenyl)-4-(4-ethoxyphenyl)-1,2,4-triazol-3-yl]sulfanyl]-N'-[(E)-(2-hydroxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)methyl]acetohydrazide 524.0
5535233 C25H22ClN5O4S 2-[[5-(4-chlorophenyl)-4-(4-ethoxyphenyl)-1,2,4-triazol-3-yl]sulfanyl]-N'-[(E)-(2-hydroxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)methyl]acetohydrazide 2-[[5-(4-chlorophenyl)-4-(4-ethoxyphenyl)-1,2,4-triazol-3-yl]sulfanyl]-N'-[(E)-(2-hydroxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)methyl]acetohydrazide 524.0
5535234 C24H21ClN6O3S 2-[[4-(4-chlorophenyl)-5-(4-pyridyl)-1,2,4-triazol-3-yl]sulfanyl]-N-[(Z)-(2,3-dimethoxyphenyl)methyleneamino]acetamide 2-[[4-(4-chlorophenyl)-5-(4-pyridyl)-1,2,4-triazol-3-yl]sulfanyl]-N-[(Z)-(2,3-dimethoxyphenyl)methyleneamino]acetamide 509.0
5535242 C22H16ClFN6OS 2-[[4-(4-chlorophenyl)-5-(4-pyridyl)-1,2,4-triazol-3-yl]sulfanyl]-N-[(Z)-(4-fluorophenyl)methyleneamino]acetamide 2-[[4-(4-chlorophenyl)-5-(4-pyridyl)-1,2,4-triazol-3-yl]sulfanyl]-N-[(Z)-(4-fluorophenyl)methyleneamino]acetamide 466.9
5535296 C23H19ClN6O2S 2-[[4-(4-chlorophenyl)-5-(4-pyridyl)-1,2,4-triazol-3-yl]sulfanyl]-N-[(Z)-(4-methoxyphenyl)methyleneamino]acetamide 2-[[4-(4-chlorophenyl)-5-(4-pyridyl)-1,2,4-triazol-3-yl]sulfanyl]-N-[(Z)-(4-methoxyphenyl)methyleneamino]acetamide 479.0
5535304 C24H20ClN5O4S 2-[[4-(4-chlorophenyl)-5-(4-methoxyphenyl)-1,2,4-triazol-3-yl]sulfanyl]-N'-[(Z)-(3-hydroxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)methyl]acetohydrazide 2-[[4-(4-chlorophenyl)-5-(4-methoxyphenyl)-1,2,4-triazol-3-yl]sulfanyl]-N'-[(Z)-(3-hydroxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)methyl]acetohydrazide 510.0
5535305 C24H20ClN5O4S 2-[[4-(4-chlorophenyl)-5-(4-methoxyphenyl)-1,2,4-triazol-3-yl]sulfanyl]-N'-[(Z)-(3-hydroxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)methyl]acetohydrazide 2-[[4-(4-chlorophenyl)-5-(4-methoxyphenyl)-1,2,4-triazol-3-yl]sulfanyl]-N'-[(Z)-(3-hydroxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)methyl]acetohydrazide 510.0
5535309 C26H24ClN5O4S 2-[[4-(4-chlorophenyl)-5-(4-methoxyphenyl)-1,2,4-triazol-3-yl]sulfanyl]-N'-[(1E)-1-(3-methoxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)ethyl]acetohydrazide 2-[[4-(4-chlorophenyl)-5-(4-methoxyphenyl)-1,2,4-triazol-3-yl]sulfanyl]-N'-[(1E)-1-(3-methoxy-4-oxo-cyclohexa-2,5-dien-1-ylidene)ethyl]acetohydrazide 538.0

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.