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 1,102,201 - 1,102,250 of 1,479,729
Page 22045 of 29,595
| CID | Formula | IUPAC Name | Traditional Name | Mol. Weight |
|---|---|---|---|---|
| 5075236 | C42H35ClN4O8S | 4-[8-[3-(5-chloro-3-methyl-benzothiophen-2-yl)-1-methyl-pyrazol-5-yl]-6-(2-hydroxy-3-methyl-phenyl)-6a-methyl-1,3,7,9-tetraoxo-4,6,9a,10,10a,10b-hexahydro-3aH-isoindolo[5,6-e]isoindol-2-yl]-2-hydroxy-benzoic acid | 4-[8-[3-(5-chloro-3-methyl-benzothiophen-2-yl)-1-methyl-pyrazol-5-yl]-6-(2-hydroxy-3-methyl-phenyl)-6a-methyl-1,3,7,9-tetraoxo-4,6,9a,10,10a,10b-hexahydro-3aH-isoindolo[5,6-e]isoindol-2-yl]-2-hydroxy-benzoic acid | 791.3 |
| 5075237 | C33H28ClFN2O6S | 8-(3-chloro-4-fluoro-phenyl)-6-(3-hydroxy-4-methoxy-phenyl)-6a-methyl-2-(2-thienylmethyl)-4,6,9a,10,10a,10b-hexahydro-3aH-isoindolo[5,6-e]isoindole-1,3,7,9-tetrone | 8-(3-chloro-4-fluoro-phenyl)-6-(3-hydroxy-4-methoxy-phenyl)-6a-methyl-2-(2-thienylmethyl)-4,6,9a,10,10a,10b-hexahydro-3aH-isoindolo[5,6-e]isoindole-1,3,7,9-tetrone | 635.1 |
| 5075238 | C38H35ClN4O7S | methyl 8-[3-(5-chloro-3-methyl-benzothiophen-2-yl)-1-methyl-pyrazol-5-yl]-6-(4-hydroxy-3,5-dimethyl-phenyl)-6a-methyl-1,3,7,9-tetraoxo-4,6,9a,10,10a,10b-hexahydro-3aH-isoindolo[5,6-e]isoindole-2-carboxylate | methyl 8-[3-(5-chloro-3-methyl-benzothiophen-2-yl)-1-methyl-pyrazol-5-yl]-6-(4-hydroxy-3,5-dimethyl-phenyl)-6a-methyl-1,3,7,9-tetraoxo-4,6,9a,10,10a,10b-hexahydro-3aH-isoindolo[5,6-e]isoindole-2-carboxylate | 727.2 |
| 5075240 | C47H42ClFN2O9 | 8-(3-chloro-4-fluoro-phenyl)-2-[4-[2-(2,5-dimethoxyphenyl)vinyl]phenyl]-6-[2-(4-hydroxy-3,5-dimethoxy-phenyl)vinyl]-6a-methyl-4,6,9a,10,10a,10b-hexahydro-3aH-isoindolo[5,6-e]isoindole-1,3,7,9-tetrone | 8-(3-chloro-4-fluoro-phenyl)-2-[4-[2-(2,5-dimethoxyphenyl)vinyl]phenyl]-6-[2-(4-hydroxy-3,5-dimethoxy-phenyl)vinyl]-6a-methyl-4,6,9a,10,10a,10b-hexahydro-3aH-isoindolo[5,6-e]isoindole-1,3,7,9-tetrone | 833.3 |
| 5075241 | C44H34ClN5O7S | 8-[3-(5-chloro-3-methyl-benzothiophen-2-yl)-1-methyl-pyrazol-5-yl]-6-(1-hydroxy-2-naphthyl)-6a-methyl-2-(4-nitrophenyl)-4,6,9a,10,10a,10b-hexahydro-3aH-isoindolo[5,6-e]isoindole-1,3,7,9-tetrone | 8-[3-(5-chloro-3-methyl-benzothiophen-2-yl)-1-methyl-pyrazol-5-yl]-6-(1-hydroxy-2-naphthyl)-6a-methyl-2-(4-nitrophenyl)-4,6,9a,10,10a,10b-hexahydro-3aH-isoindolo[5,6-e]isoindole-1,3,7,9-tetrone | 812.3 |
| 5075249 | C16H11ClN2O2 | 2-(4-chlorophenyl)-4-(phenyliminomethyl)oxazol-5-ol | 4-(anilinomethylene)-2-(4-chlorophenyl)-1,3-oxazol-5(4H)-one | 298.72 |
| 5075251 | C24H15ClN2O3 | 4-(4-chlorophenyl)-1,5-diphenyl-4H-pyrrolo[3,4-b]pyrrole-2,3,6-trione | 4-(4-chlorophenyl)-1,5-diphenyl-4H-pyrrolo[3,4-b]pyrrole-2,3,6-trione | 414.8 |
| 5075253 | C19H12Cl2N2OS2 | 5-[[1-[(2,4-dichlorophenyl)methyl]indol-3-yl]methylene]-2-thioxo-thiazolidin-4-one | 5-[[1-[(2,4-dichlorophenyl)methyl]indol-3-yl]methylene]-2-thioxo-thiazolidin-4-one | 419.3 |
| 5075257 | C30H26ClN3O4S | ethyl 2-[(2-chlorophenyl)methylsulfanyl]-5-(3-methoxyphenyl)-4-oxo-7-phenyl-5,8-dihydro-1H-pyrido[2,3-d]pyrimidine-6-carboxylate | ethyl 2-[(2-chlorophenyl)methylsulfanyl]-5-(3-methoxyphenyl)-4-oxo-7-phenyl-5,8-dihydro-1H-pyrido[2,3-d]pyrimidine-6-carboxylate | 560.1 |
| 5075263 | C13H8Cl2NO4S2- | 2-[5-[(3,5-dichloro-2-methoxy-phenyl)methylene]-4-oxo-2-thioxo-thiazolidin-3-yl]acetate | 2-[5-[(3,5-dichloro-2-methoxy-phenyl)methylene]-4-oxo-2-thioxo-thiazolidin-3-yl]acetate | 377.2 |
| 5075264 | C13H9Cl2NO4S2 | 2-[5-[(3,5-dichloro-2-methoxy-phenyl)methylene]-4-oxo-2-thioxo-thiazolidin-3-yl]acetic acid | 2-[5-[(3,5-dichloro-2-methoxy-phenyl)methylene]-4-oxo-2-thioxo-thiazolidin-3-yl]acetic acid | 378.3 |
| 5075267 | C23H16ClN2O4S- | 2-chloro-5-[5-[[2-(2,4-dimethylanilino)-4-oxo-thiazol-5-ylidene]methyl]-2-furyl]benzoate | 2-chloro-5-[5-[[2-(2,4-dimethylanilino)-4-oxo-thiazol-5-ylidene]methyl]-2-furyl]benzoate | 451.9 |
| 5075268 | C21H21ClF3N3O | 2-chloro-4,5-difluoro-N'-[1-[5-fluoro-2-methyl-4-(1-piperidyl)phenyl]vinyl]benzohydrazide | 2-chloro-4,5-difluoro-N'-[1-[5-fluoro-2-methyl-4-(1-piperidyl)phenyl]vinyl]benzohydrazide | 423.9 |
| 5075269 | C20H21ClFN3O2 | 2-chloro-N'-[1-(5-fluoro-2-methyl-4-morpholino-phenyl)vinyl]benzohydrazide | 2-chloro-N'-[1-(5-fluoro-2-methyl-4-morpholino-phenyl)vinyl]benzohydrazide | 389.8 |
| 5075271 | C18H15ClNO3S- | 3-(4-chlorobenzoyl)-2-(p-tolyl)thiazolidine-4-carboxylate | 3-(4-chlorobenzoyl)-2-(p-tolyl)thiazolidine-4-carboxylate | 360.8 |
| 5075279 | C23H17Cl2N3O5 | 4-(2,4-dichlorophenoxy)-N-[2-(6-nitro-1,3-benzoxazol-2-yl)phenyl]butanamide | 4-(2,4-dichlorophenoxy)-N-[2-(6-nitro-1,3-benzoxazol-2-yl)phenyl]butanamide | 486.3 |
| 5075285 | C24H32Cl2N2O4S | N-[4-(dibutylsulfamoyl)phenyl]-4-(2,4-dichlorophenoxy)butanamide | N-[4-(dibutylsulfamoyl)phenyl]-4-(2,4-dichlorophenoxy)butanamide | 515.5 |
| 5075297 | C21H19ClN4O2 | N-[(2-chlorophenyl)methyl]-2-(4-methyl-2-oxo-pyrimido[1,2-b]indazol-6-yl)propanamide | N-[(2-CHLOROPHENYL)METHYL]-2-{4-METHYL-2-OXO-2H,6H-PYRIMIDO[1,2-B]INDAZOL-6-YL}PROPANAMIDE | 394.9 |
| 5075318 | C23H19BrClN3O3 | 5-bromo-2-chloro-N-[2-(3,4-dimethoxyphenyl)-7-methyl-imidazo[1,2-a]pyridin-3-yl]benzamide | 5-bromo-2-chloro-N-[2-(3,4-dimethoxyphenyl)-7-methylimidazo[1,2-a]pyridin-3-yl]benzamide | 500.8 |
| 5075325 | C22H16ClFN2O2 | 4-(3-chlorobenzoyl)-7-fluoro-5-phenyl-3,5-dihydro-1H-1,4-benzodiazepin-2-one | Oprea1_200219 | 394.8 |
| 5075326 | C23H24ClN5O2S | N-(4-chlorophenyl)-2-[2-[3-[4-(dimethylamino)phenyl]-1-methyl-prop-2-enylidene]hydrazino]-4-oxo-5,6-dihydro-1,3-thiazine-6-carboxamide | N-(4-chlorophenyl)-2-[2-[3-[4-(dimethylamino)phenyl]-1-methyl-prop-2-enylidene]hydrazino]-4-oxo-5,6-dihydro-1,3-thiazine-6-carboxamide | 470.0 |
| 5075327 | C26H23ClFN3O3S | 2-[1-(4-chlorophenyl)-3-[2-(4-methoxyphenyl)ethyl]-5-oxo-2-thioxo-imidazolidin-4-yl]-N-(4-fluorophenyl)acetamide | 2-[1-(4-chlorophenyl)-3-[2-(4-methoxyphenyl)ethyl]-5-oxo-2-thioxo-imidazolidin-4-yl]-N-(4-fluorophenyl)acetamide | 512.0 |
| 5075328 | C28H25ClF3N3O3S | 2-[3-[2-(4-chlorophenyl)ethyl]-5-oxo-2-thioxo-1-[3-(trifluoromethyl)phenyl]imidazolidin-4-yl]-N-(4-ethoxyphenyl)acetamide | 2-[3-[2-(4-chlorophenyl)ethyl]-5-oxo-2-thioxo-1-[3-(trifluoromethyl)phenyl]imidazolidin-4-yl]-N-(4-ethoxyphenyl)acetamide | 576.0 |
| 5075329 | C25H20ClFN4O3S | N-[5-[2-(3-chloro-4-methyl-anilino)-2-oxo-ethyl]-4-oxo-3-phenyl-2-thioxo-imidazolidin-1-yl]-3-fluoro-benzamide | N-[5-[2-(3-chloro-4-methyl-anilino)-2-oxo-ethyl]-4-oxo-3-phenyl-2-thioxo-imidazolidin-1-yl]-3-fluoro-benzamide | 511.0 |
| 5075332 | C48H41ClFN7O5S | 8-[3-(5-chloro-3-methyl-benzothiophen-2-yl)-1-methyl-pyrazol-5-yl]-2-[4-[4-(dimethylamino)phenyl]azophenyl]-6-(3-fluoro-4-hydroxy-phenyl)-6a-methyl-4,6,9a,10,10a,10b-hexahydro-3aH-isoindolo[5,6-e]isoindole-1,3,7,9-tetrone | 8-[3-(5-chloro-3-methyl-benzothiophen-2-yl)-1-methyl-pyrazol-5-yl]-2-[4-[4-(dimethylamino)phenyl]azophenyl]-6-(3-fluoro-4-hydroxy-phenyl)-6a-methyl-4,6,9a,10,10a,10b-hexahydro-3aH-isoindolo[5,6-e]isoindole-1,3,7,9-tetrone | 882.4 |
| 5075333 | C30H28ClFN2O7 | 8-(3-chloro-4-fluoro-phenyl)-6-(4-hydroxy-2,6-dimethoxy-phenyl)-2,6a-dimethyl-4,6,9a,10,10a,10b-hexahydro-3aH-isoindolo[5,6-e]isoindole-1,3,7,9-tetrone | 8-(3-chloro-4-fluoro-phenyl)-6-(4-hydroxy-2,6-dimethoxy-phenyl)-2,6a-dimethyl-4,6,9a,10,10a,10b-hexahydro-3aH-isoindolo[5,6-e]isoindole-1,3,7,9-tetrone | 583.0 |
| 5075334 | C41H35ClN4O6S | 8-[3-(5-chloro-3-methyl-benzothiophen-2-yl)-1-methyl-pyrazol-5-yl]-6-(4-hydroxy-3-methoxy-phenyl)-6a-methyl-2-phenyl-4,6,9a,10,10a,10b-hexahydro-3aH-isoindolo[5,6-e]isoindole-1,3,7,9-tetrone | 8-[3-(5-chloro-3-methyl-benzothiophen-2-yl)-1-methyl-pyrazol-5-yl]-6-(4-hydroxy-3-methoxy-phenyl)-6a-methyl-2-phenyl-4,6,9a,10,10a,10b-hexahydro-3aH-isoindolo[5,6-e]isoindole-1,3,7,9-tetrone | 747.3 |
| 5075339 | C28H25Cl2N2O2PS | N-bis(2-chloro-2-phenyl-vinyl)phosphoryl-4-(4-propoxyphenyl)thiazol-2-amine | AKOS001031556 | 555.5 |
| 5075340 | C28H31Cl3N4O | N-[4-[(4-chlorophenyl)methyl]piperazin-1-yl]-1-[3-[(2,4-dichlorophenyl)methylene]-2-morpholino-cyclopenten-1-yl]methanimine | Oprea1_241995 | 545.9 |
| 5075352 | C21H24Cl3N3O2 | 1-[(3-chlorophenyl)methyl]-3-(3,4-dichlorophenyl)-1-(3-morpholinopropyl)urea | 1-[(3-chlorophenyl)methyl]-3-(3,4-dichlorophenyl)-1-(3-morpholinopropyl)urea | 456.8 |
| 5075356 | C28H31ClN2O3S | 6-tert-butyl-2-[(4-chlorobenzoyl)amino]-N-(2-ethoxyphenyl)-4,5,6,7-tetrahydrobenzothiophene-3-carboxamide | 6-tert-butyl-2-[(4-chlorobenzoyl)amino]-N-(2-ethoxyphenyl)-4,5,6,7-tetrahydrobenzothiophene-3-carboxamide | 511.1 |
| 5075358 | C21H17Cl2F3N4O | N-(3,5-dichlorophenyl)-5-(p-tolyl)-7-(trifluoromethyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidine-3-carboxamide | STK341580 | 469.3 |
| 5075373 | C23H26ClN3O4 | N-[2-[3-(3-chloro-2-methyl-phenyl)-4-oxo-imidazolidin-1-yl]-2-oxo-ethyl]-N-(2-furylmethyl)cyclopentanecarboxamide | N-[2-[3-(3-chloro-2-methyl-phenyl)-4-oxo-imidazolidin-1-yl]-2-oxo-ethyl]-N-(2-furylmethyl)cyclopentanecarboxamide | 443.9 |
| 5075374 | C18H26ClN3O4 | 2-chloro-N-(3-methoxypropyl)-N-[2-[[2-(4-methylanilino)-2-oxo-ethyl]amino]-2-oxo-ethyl]propanamide | 2-chloro-N-(3-methoxypropyl)-N-[2-[[2-(4-methylanilino)-2-oxo-ethyl]amino]-2-oxo-ethyl]propanamide | 383.9 |
| 5075384 | C24H23ClFN3O5S2 | 2-[(4-chloro-3-nitro-phenyl)sulfonyl-cyclopropyl-amino]-N-[(4-fluorophenyl)methyl]-N-[(3-methyl-2-thienyl)methyl]acetamide | 2-[(4-chloro-3-nitro-phenyl)sulfonyl-cyclopropyl-amino]-N-[(4-fluorophenyl)methyl]-N-[(3-methyl-2-thienyl)methyl]acetamide | 552.0 |
| 5075385 | C20H10ClIN4O | 3-(2-chloro-3-quinolyl)-2-(6-iodo-4-oxo-1H-quinazolin-2-yl)prop-2-enenitrile | 3-(2-chloro-3-quinolyl)-2-(6-iodo-4-oxo-1H-quinazolin-2-yl)prop-2-enenitrile | 484.7 |
| 5075386 | C10H8ClF4NO | N-(2-chloro-6-methyl-phenyl)-2,3,3,3-tetrafluoro-propanamide | AKOS034454309 | 269.62 |
| 5075392 | C29H22BrCl2N5OS | N-[[3-[1-(4-bromophenyl)-2,5-dimethyl-pyrrol-3-yl]-1-phenyl-pyrazol-5-yl]carbamothioyl]-2,4-dichloro-benzamide | AKOS001020125 | 639.4 |
| 5075394 | C17H16Cl2F2N2OS | 1-[2,2-dichloro-1-(p-tolyl)ethyl]-3-[4-(difluoromethylsulfanyl)phenyl]urea | AKOS001023183 | 405.3 |
| 5075396 | C26H24Br2Cl2N2O8 | 4-[6a,9a-dichloro-6-(2,3-dibromo-4-hydroxy-5-methoxy-phenyl)-8-methyl-1,3,7,9-tetraoxo-3a,4,6,10,10a,10b-hexahydroisoindolo[5,6-e]isoindol-2-yl]butanoic acid | 4-[6a,9a-dichloro-6-(2,3-dibromo-4-hydroxy-5-methoxy-phenyl)-8-methyl-1,3,7,9-tetraoxo-3a,4,6,10,10a,10b-hexahydroisoindolo[5,6-e]isoindol-2-yl]butanoic acid | 723.2 |
| 5075397 | C30H26Cl2N2O8 | 3-[6a,9a-dichloro-6-[2-(2-hydroxyethoxy)phenyl]-8-methyl-1,3,7,9-tetraoxo-3a,4,6,10,10a,10b-hexahydroisoindolo[5,6-e]isoindol-2-yl]benzoic acid | 3-[6a,9a-dichloro-6-[2-(2-hydroxyethoxy)phenyl]-8-methyl-1,3,7,9-tetraoxo-3a,4,6,10,10a,10b-hexahydroisoindolo[5,6-e]isoindol-2-yl]benzoic acid | 613.4 |
| 5075398 | C37H27Cl2FN2O5 | 2-benzyl-6a,9a-dichloro-8-(4-fluorophenyl)-6-(4-hydroxy-1-naphthyl)-3a,4,6,10,10a,10b-hexahydroisoindolo[5,6-e]isoindole-1,3,7,9-tetrone | 2-benzyl-6a,9a-dichloro-8-(4-fluorophenyl)-6-(4-hydroxy-1-naphthyl)-3a,4,6,10,10a,10b-hexahydroisoindolo[5,6-e]isoindole-1,3,7,9-tetrone | 669.5 |
| 5075399 | C42H31ClF7N3O7 | 2-[3,5-bis(trifluoromethyl)phenyl]-6a-(4-chlorophenyl)-8-(4-fluoroanilino)-6-(2-hydroxy-4,6-dimethoxy-phenyl)-4,6,9a,10,10a,10b-hexahydro-3aH-isoindolo[5,6-e]isoindole-1,3,7,9-tetrone | 2-[3,5-bis(trifluoromethyl)phenyl]-6a-(4-chlorophenyl)-8-(4-fluoroanilino)-6-(2-hydroxy-4,6-dimethoxy-phenyl)-4,6,9a,10,10a,10b-hexahydro-3aH-isoindolo[5,6-e]isoindole-1,3,7,9-tetrone | 858.1 |
| 5075400 | C45H34BrClFN3O6 | 6-(4-benzyloxy-2-hydroxy-phenyl)-2-(4-bromophenyl)-6a-(4-chlorophenyl)-8-(4-fluoroanilino)-4,6,9a,10,10a,10b-hexahydro-3aH-isoindolo[5,6-e]isoindole-1,3,7,9-tetrone | 6-(4-benzyloxy-2-hydroxy-phenyl)-2-(4-bromophenyl)-6a-(4-chlorophenyl)-8-(4-fluoroanilino)-4,6,9a,10,10a,10b-hexahydro-3aH-isoindolo[5,6-e]isoindole-1,3,7,9-tetrone | 847.1 |
| 5075401 | C47H36ClFN4O6 | 2-[4-(1,3-benzoxazol-2-yl)phenyl]-6a-(4-chlorophenyl)-8-(4-fluoroanilino)-6-(4-hydroxy-3,5-dimethyl-phenyl)-4,6,9a,10,10a,10b-hexahydro-3aH-isoindolo[5,6-e]isoindole-1,3,7,9-tetrone | 2-[4-(1,3-benzoxazol-2-yl)phenyl]-6a-(4-chlorophenyl)-8-(4-fluoroanilino)-6-(4-hydroxy-3,5-dimethyl-phenyl)-4,6,9a,10,10a,10b-hexahydro-3aH-isoindolo[5,6-e]isoindole-1,3,7,9-tetrone | 807.3 |
| 5075402 | C39H30ClFN4O8 | 6a-(4-chlorophenyl)-8-(4-fluoroanilino)-6-(4-hydroxy-3-methoxy-phenyl)-2-(3-nitrophenyl)-4,6,9a,10,10a,10b-hexahydro-3aH-isoindolo[5,6-e]isoindole-1,3,7,9-tetrone | 6a-(4-chlorophenyl)-8-(4-fluoroanilino)-6-(4-hydroxy-3-methoxy-phenyl)-2-(3-nitrophenyl)-4,6,9a,10,10a,10b-hexahydro-3aH-isoindolo[5,6-e]isoindole-1,3,7,9-tetrone | 737.1 |
| 5075403 | C43H31Cl2F4N5O5 | 6a-(4-chlorophenyl)-2-[[3-chloro-6-(trifluoromethyl)-2-pyridyl]-methyl-amino]-8-(4-fluoroanilino)-6-(1-hydroxy-2-naphthyl)-4,6,9a,10,10a,10b-hexahydro-3aH-isoindolo[5,6-e]isoindole-1,3,7,9-tetrone | 6a-(4-chlorophenyl)-2-[[3-chloro-6-(trifluoromethyl)-2-pyridyl]-methyl-amino]-8-(4-fluoroanilino)-6-(1-hydroxy-2-naphthyl)-4,6,9a,10,10a,10b-hexahydro-3aH-isoindolo[5,6-e]isoindole-1,3,7,9-tetrone | 844.6 |
| 5075405 | C40H33ClN2O6 | 6-(4-benzyloxy-2-hydroxy-phenyl)-8-(3-chlorophenyl)-2-methyl-6a-phenyl-4,6,9a,10,10a,10b-hexahydro-3aH-isoindolo[5,6-e]isoindole-1,3,7,9-tetrone | 6-(4-benzyloxy-2-hydroxy-phenyl)-8-(3-chlorophenyl)-2-methyl-6a-phenyl-4,6,9a,10,10a,10b-hexahydro-3aH-isoindolo[5,6-e]isoindole-1,3,7,9-tetrone | 673.1 |
| 5075407 | C21H19Cl2N3O4S | ethyl 4-[[6-[(3,4-dichlorophenyl)carbamoyl]-3-methyl-4-oxo-1,3-thiazinan-2-ylidene]amino]benzoate | ethyl 4-[[6-[(3,4-dichlorophenyl)carbamoyl]-3-methyl-4-oxo-1,3-thiazinan-2-ylidene]amino]benzoate | 480.4 |
| 5075413 | C32H29Cl2N3OS | 2-amino-4-[3-(benzylsulfanylmethyl)-2,5-dimethyl-phenyl]-1-(2,4-dichlorophenyl)-5-oxo-4,6,7,8-tetrahydroquinoline-3-carbonitrile | AKOS003813115 | 574.6 |
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.