Molecular formula
C21H18N4O3S2
64 compounds have this formula on CompoundList.
- Molar mass
- 438.52g/mol
- Monoisotopic mass
- 438.0820Da
- Atoms
- 48
- Elements
- 5
- Rings plus double bonds
- 15
The formula C21H18N4O3S2 describes a molecule made of 21 carbon atoms, 18 hydrogen atoms, 4 nitrogen atoms, 3 oxygen atoms and 2 sulfur atoms. It is written in Hill notation: carbon first, then hydrogen, then the other elements in alphabetical order. The formula tells you which atoms are present, not how they are connected, which is why several different chemicals can share it.
Elemental composition
- C Carbon × 2157.52%12.011 × 21 = 252.231 g/mol
- H Hydrogen × 184.14%1.008 × 18 = 18.144 g/mol
- N Nitrogen × 412.78%14.007 × 4 = 56.028 g/mol
- O Oxygen × 310.95%15.999 × 3 = 47.997 g/mol
- S Sulfur × 214.62%32.06 × 2 = 64.120 g/mol
Look up another formula
Compounds with the formula C21H18N4O3S2
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 64 of 64 compounds
N-(4-(N-(5-Ethyl-1,3,4-thiadiazol-2-yl)sulfamoyl)phenyl)-1-naphthamide
CAS 308293-08-5C21H18N4O3S2
![N-(1,3-Benzodioxol-5-ylmethyl)-3-[(5-phenyl[1,3]thiazolo[2,3-c][1,2,4]triazol-3-yl)thio]propanamide chemical structure, C21H18N4O3S2, CAS 690960-01-1](/s/UFSXTLOZKIJTNN-UHFFFAOYSA-N.svg)
N-(1,3-Benzodioxol-5-ylmethyl)-3-[(5-phenyl[1,3]thiazolo[2,3-c][1,2,4]triazol-3-yl)thio]propanamide
CAS 690960-01-1C21H18N4O3S2
![N-(1,3-Benzodioxol-5-ylmethyl)-2-{[5-(4-methylphenyl)[1,3]thiazolo[2,3-c][1,2,4]triazol-3-yl]thio}acetamide chemical structure, C21H18N4O3S2, CAS 690645-22-8](/s/OYYHSCFGVSMDJW-UHFFFAOYSA-N.svg)
N-(1,3-Benzodioxol-5-ylmethyl)-2-{[5-(4-methylphenyl)[1,3]thiazolo[2,3-c][1,2,4]triazol-3-yl]thio}acetamide
CAS 690645-22-8C21H18N4O3S2
![1-(4-Methoxybenzyl)-3-(thiophen-2-ylsulfonyl)-2,3-dihydro-1H-imidazo[4,5-b]quinoxaline chemical structure, C21H18N4O3S2, CAS 847367-70-8](/s/VYKFLUZWZLUUOY-UHFFFAOYSA-N.svg)
1-(4-Methoxybenzyl)-3-(thiophen-2-ylsulfonyl)-2,3-dihydro-1H-imidazo[4,5-b]quinoxaline
CAS 847367-70-8C21H18N4O3S2
![3-[(Z)-(3-Allyl-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene)methyl]-2-[(2-furylmethyl)amino]-7-methyl-4H-pyrido[1,2-A]pyrimidin-4-one chemical structure, C21H18N4O3S2, CAS 381169-80-8](/s/WILJQVMHIMLHOE-YBEGLDIGSA-N.svg)
3-[(Z)-(3-Allyl-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene)methyl]-2-[(2-furylmethyl)amino]-7-methyl-4H-pyrido[1,2-A]pyrimidin-4-one
CAS 381169-80-8C21H18N4O3S2
2-(Allylamino)-3-((Z)-(3-(2-furylmethyl)-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene)methyl)-9-methyl-4H-pyrido(1,2-A)pyrimidin-4-one
CAS 374548-05-7C21H18N4O3S2
![N-(2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)-2-((5-(p-tolyl)thiazolo[2,3-c][1,2,4]triazol-3-yl)thio)acetamide chemical structure, C21H18N4O3S2, CAS 690645-30-8](/s/JVSGLYVAQNSUFN-UHFFFAOYSA-N.svg)
N-(2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)-2-((5-(p-tolyl)thiazolo[2,3-c][1,2,4]triazol-3-yl)thio)acetamide
CAS 690645-30-8C21H18N4O3S2
![2-({5-[(3-Methylphenoxy)methyl]-1,3,4-oxadiazol-2-yl}sulfanyl)-N-(4-phenyl-1,3-thiazol-2-yl)acetamide chemical structure, C21H18N4O3S2, CAS 431994-88-6](/s/GVHZVVDWIOCWPI-UHFFFAOYSA-N.svg)
2-({5-[(3-Methylphenoxy)methyl]-1,3,4-oxadiazol-2-yl}sulfanyl)-N-(4-phenyl-1,3-thiazol-2-yl)acetamide
CAS 431994-88-6C21H18N4O3S2
N-Benzothiazol-2-yl-2-(5-ethyl-4-hydroxy-6-oxo-1-phenyl-1,6-dihydro-pyrimidin-2-ylsulfanyl)-acetamide
CAS 387352-17-2C21H18N4O3S2
![N-(2-(Benzo[d]thiazol-2-yl)-2,4,5,6-tetrahydrocyclopenta[c]pyrazol-3-yl)-2-(methylsulfonyl)benzamide chemical structure, C21H18N4O3S2, CAS 1172025-38-5](/s/GMSNRSPOLIGCHB-UHFFFAOYSA-N.svg)
N-(2-(Benzo[d]thiazol-2-yl)-2,4,5,6-tetrahydrocyclopenta[c]pyrazol-3-yl)-2-(methylsulfonyl)benzamide
CAS 1172025-38-5C21H18N4O3S2
![N-(5-(Allylthio)-1,3,4-thiadiazol-2-yl)-4-(1,3-dioxo-1H-benzo[de]isoquinolin-2(3H)-yl)butanamide chemical structure, C21H18N4O3S2, CAS 500267-43-6](/s/NQFTYCLRTQRMCX-UHFFFAOYSA-N.svg)
N-(5-(Allylthio)-1,3,4-thiadiazol-2-yl)-4-(1,3-dioxo-1H-benzo[de]isoquinolin-2(3H)-yl)butanamide
CAS 500267-43-6C21H18N4O3S2
![N-(Benzo[d]thiazol-2-yl)-2-((6-(2,5-dimethoxyphenyl)pyridazin-3-yl)thio)acetamide chemical structure, C21H18N4O3S2, CAS 899968-63-9](/s/DBIDYKGXAWIJLF-UHFFFAOYSA-N.svg)
N-(Benzo[d]thiazol-2-yl)-2-((6-(2,5-dimethoxyphenyl)pyridazin-3-yl)thio)acetamide
CAS 899968-63-9C21H18N4O3S2
![Ethyl 2-(2-(1H-indol-2-yl)thiazole-4-carboxamido)-5,6-dihydro-4H-cyclopenta[d]thiazole-4-carboxylate chemical structure, C21H18N4O3S2, CAS 1171630-02-6](/s/QUYNEIMXRYYDOF-UHFFFAOYSA-N.svg)
Ethyl 2-(2-(1H-indol-2-yl)thiazole-4-carboxamido)-5,6-dihydro-4H-cyclopenta[d]thiazole-4-carboxylate
CAS 1171630-02-6C21H18N4O3S2
![4-Methoxy-N-(4-(2-((4-methylbenzo[d]thiazol-2-yl)amino)-2-oxoethyl)thiazol-2-yl)benzamide chemical structure, C21H18N4O3S2, CAS 921792-61-2](/s/RMADKCPXKNJJOZ-UHFFFAOYSA-N.svg)
4-Methoxy-N-(4-(2-((4-methylbenzo[d]thiazol-2-yl)amino)-2-oxoethyl)thiazol-2-yl)benzamide
CAS 921792-61-2C21H18N4O3S2
![N-(4-(2-((6-Ethoxybenzo[d]thiazol-2-yl)amino)-2-oxoethyl)thiazol-2-yl)benzamide chemical structure, C21H18N4O3S2, CAS 941947-35-9](/s/PVAILRZAVCSHEU-UHFFFAOYSA-N.svg)
N-(4-(2-((6-Ethoxybenzo[d]thiazol-2-yl)amino)-2-oxoethyl)thiazol-2-yl)benzamide
CAS 941947-35-9C21H18N4O3S2
6-(3-Methoxyphenyl)-2-(((3-(4-(methylthio)phenyl)-1,2,4-oxadiazol-5-yl)methyl)thio)pyrimidin-4-ol
CAS 1021211-39-1C21H18N4O3S2
Acetamide, N-(4-((3-(((4-(acetylamino)phenyl)methylene)amino)-4-oxo-2-thioxo-5-thiazolidinylidene)methyl)phenyl)-
CAS 64058-89-5C21H18N4O3S2
![N-(5-Methyl-1,2-oxazol-3-yl)-2-(4-oxo-6-phenyl-3-prop-2-enylthieno[2,3-d]pyrimidin-2-yl)sulfanylacetamide chemical structure, C21H18N4O3S2, CAS 379247-91-3](/s/MFRYUWDWBDUEEH-UHFFFAOYSA-N.svg)
N-(5-Methyl-1,2-oxazol-3-yl)-2-(4-oxo-6-phenyl-3-prop-2-enylthieno[2,3-d]pyrimidin-2-yl)sulfanylacetamide
CAS 379247-91-3C21H18N4O3S2
![(E)-N-[5-[2-(4-Acetylanilino)-2-oxoethyl]sulfanyl-1,3,4-thiadiazol-2-yl]-3-phenylprop-2-enamide chemical structure, C21H18N4O3S2, CAS 531535-96-3](/s/VFNHGZPODMUBNP-KPKJPENVSA-N.svg)
(E)-N-[5-[2-(4-Acetylanilino)-2-oxoethyl]sulfanyl-1,3,4-thiadiazol-2-yl]-3-phenylprop-2-enamide
CAS 531535-96-3C21H18N4O3S2
![N-[4-(4-Cyanophenyl)-1,3-thiazol-2-yl]-4-(pyrrolidine-1-sulfonyl)benzamide chemical structure, C21H18N4O3S2, CAS 313528-80-2](/s/GQVCWCNJERTSRU-UHFFFAOYSA-N.svg)
N-[4-(4-Cyanophenyl)-1,3-thiazol-2-yl]-4-(pyrrolidine-1-sulfonyl)benzamide
CAS 313528-80-2C21H18N4O3S2
5-(Furan-2-yl)-2-(methylsulfonyl)-1'-phenyl-3'-(thiophen-2-yl)-3,4-dihydro-1'H,2H-3,4'-bipyrazole
CAS 876942-77-7C21H18N4O3S2
N-(5-Benzylsulfanyl-1,3,4-thiadiazol-2-yl)-4-(1,3-dioxoisoindol-2-yl)butanamide
CAS 129504-36-5C21H18N4O3S2
![N-(5-Ethyl-1,3,4-thiadiazol-2-yl)-4-{[(2-hydroxynaphthalen-1-yl)methylidene]amino}benzene-1-sulfonamide chemical structure, C21H18N4O3S2, CAS 37750-80-4](/s/WWTRZVXDNLSFQH-UHFFFAOYSA-N.svg)
N-(5-Ethyl-1,3,4-thiadiazol-2-yl)-4-{[(2-hydroxynaphthalen-1-yl)methylidene]amino}benzene-1-sulfonamide
CAS 37750-80-4C21H18N4O3S2
![N-(6-Acetyl-3-(benzo[d]thiazol-2-yl)-4,5,6,7-tetrahydrothieno[2,3-c]pyridin-2-yl)-3-methylisoxazole-5-carboxamide chemical structure, C21H18N4O3S2, CAS 946286-75-5](/s/HHJWWDDAVVNOTJ-UHFFFAOYSA-N.svg)
N-(6-Acetyl-3-(benzo[d]thiazol-2-yl)-4,5,6,7-tetrahydrothieno[2,3-c]pyridin-2-yl)-3-methylisoxazole-5-carboxamide
CAS 946286-75-5C21H18N4O3S2
- 2-({1-[(2H-1,3-Benzodioxol-5-yl)methyl]-1H-imidazol-2-yl}sulfanyl)-N-(6-methyl-1,3-benzothiazol-2-yl)acetamide872590-21-1C21H18N4O3S2
- Ethyl [2-({[4-phenyl-2-(1H-pyrrol-1-yl)-1,3-thiazol-5-yl]carbonyl}amino)-1,3-thiazol-4-yl]acetate1282109-76-5C21H18N4O3S2
- 4-(N-Ethyl-N-phenylsulfamoyl)-N-(thieno[2,3-d]pyrimidin-4-yl)benzamide1323419-81-3C21H18N4O3S2
- Methyl 5-benzyl-2-({[1-methyl-3-(thiophen-2-yl)-1H-pyrazol-5-yl]carbonyl}amino)-1,3-thiazole-4-carboxylate1630902-88-3C21H18N4O3S2
- 3-[(Z)-(3-Benzyl-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene)methyl]-2-[(2-hydroxyethyl)amino]-4H-pyrido[1,2-a]pyrimidin-4-one383371-78-6C21H18N4O3S2
- 1-((4-Methoxyphenyl)sulfonyl)-3-(thiophen-2-ylmethyl)-2,3-dihydro-1H-imidazo[4,5-b]quinoxaline848221-06-7C21H18N4O3S2
- 2-[(2-Hydroxy-2-phenylethyl)amino]-3-[(Z)-(3-methyl-4-oxo-2-thioxo-1,3-thiazolidin-5-ylidene)methyl]-4H-pyrido[1,2-a]pyrimidin-4-one587013-32-9C21H18N4O3S2
- N-(Furan-2-ylmethyl)-2-((5-(2-(naphthalen-1-yl)acetamido)-1,3,4-thiadiazol-2-yl)thio)acetamide868973-21-1C21H18N4O3S2
- 2-(2-(3,4-Dimethoxyphenyl)thiazol-4-yl)-N-(4-(pyridin-2-yl)thiazol-2-yl)acetamide1180568-35-7C21H18N4O3S2
- 2-[2-(3,4-Dimethoxyphenyl)-1,3-thiazol-4-yl]-N-[(2Z)-4-(pyridin-4-yl)-1,3-thiazol-2(3H)-ylidene]acetamide1246047-63-1C21H18N4O3S2
- Ethyl 4-methyl-2-({[4-phenyl-2-(1H-pyrrol-1-yl)-1,3-thiazol-5-yl]carbonyl}amino)-1,3-thiazole-5-carboxylate1282114-73-1C21H18N4O3S2
- N-[(2Z)-6-Methoxy-1,3-benzothiazol-2(3H)-ylidene]-2-{3-[4-(methylsulfanyl)phenyl]-6-oxopyridazin-1(6H)-yl}acetamide1310945-58-4C21H18N4O3S2
- 2-[2-(3,4-Dimethoxyphenyl)-1,3-thiazol-4-yl]-N-[4-(pyridin-3-yl)-1,3-thiazol-2-yl]acetamide1374534-34-5C21H18N4O3S2
- 2-Methoxy-N-(4-(2-(pyridin-3-ylamino)thiazol-4-yl)phenyl)benzenesulfonamide1797641-55-4C21H18N4O3S2
- Ethyl 2-(2-([1,2,4]triazolo[4,3-a]pyridin-3-ylthio)acetamido)-4-phenylthiophene-3-carboxylate306281-02-7C21H18N4O3S2
- Methyl 4-[({[5-(4-methylphenyl)[1,3]thiazolo[2,3-c][1,2,4]triazol-3-yl]sulfanyl}acetyl)amino]benzoate496023-60-0C21H18N4O3S2
- 2-[[5-(4-Ethoxyphenyl)-1,3,4-oxadiazol-2-yl]sulfanyl]-N-(4-phenyl-1,3-thiazol-2-yl)acetamide850937-23-4C21H18N4O3S2
- 1-Phenyl-N-(4-sulfamoylbenzyl)-3-(thiophen-2-yl)-1H-pyrazole-5-carboxamide956145-72-5C21H18N4O3S2
- 2-(1H-Benzimidazol-2-ylsulfanyl)-2-phenyl-N-(4-sulfamoylphenyl)acetamide892675-95-5C21H18N4O3S2
- N-(4-(5-Mercapto-4-(3-methoxyphenyl)-4H-1,2,4-triazol-3-yl)phenyl)benzenesulfonamide917747-50-3C21H18N4O3S2
- N-((2-(4-Methoxyphenyl)thiazol-4-yl)methyl)-2-(6-oxo-4-(thiophen-2-yl)pyrimidin-1(6H)-yl)acetamide1251697-50-3C21H18N4O3S2
- N-((2-(4-Methoxyphenyl)thiazol-4-yl)methyl)-2-(6-oxo-3-(thiophen-2-yl)pyridazin-1(6H)-yl)acetamide1251655-45-4C21H18N4O3S2
- N-(5-(6-Methoxy-1H-indole-2-carbonyl)-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridin-2-yl)thiophene-2-carboxamide1396787-00-0C21H18N4O3S2
- 2-(Benzo[d]thiazol-2-ylthio)-N-(1-((2,3-dihydrobenzo[b][1,4]dioxin-2-yl)methyl)-1H-pyrazol-4-yl)acetamide1795299-49-8C21H18N4O3S2
- N-[4-[(5-Ethyl-1,3,4-thiadiazol-2-yl)sulfamoyl]phenyl]naphthalene-2-carboxamide867041-53-0C21H18N4O3S2
- N-(Benzo[d]thiazol-2-yl)-2-((6-(3,4-dimethoxyphenyl)pyridazin-3-yl)thio)acetamide841219-05-4C21H18N4O3S2
- N-(4-(N-(2-Methyl-3-(thiazolo[5,4-b]pyridin-2-yl)phenyl)sulfamoyl)phenyl)acetamide863595-10-2C21H18N4O3S2
- N-(4-(5-Mercapto-4-(4-methoxyphenyl)-4H-1,2,4-triazol-3-yl)phenyl)benzenesulfonamide917747-44-5C21H18N4O3S2
- 4-Methoxy-N-(4-(2-((6-methylbenzo[d]thiazol-2-yl)amino)-2-oxoethyl)thiazol-2-yl)benzamide921543-35-3C21H18N4O3S2
- (4-(6-Methylbenzo[d]thiazol-2-yl)piperazin-1-yl)(5-nitrobenzo[b]thiophen-2-yl)methanone897466-83-0C21H18N4O3S2
- (4-(4-Methylbenzo[d]thiazol-2-yl)piperazin-1-yl)(5-nitrobenzo[b]thiophen-2-yl)methanone897475-51-3C21H18N4O3S2
- N-(4-(4-Cyanophenyl)thiazol-2-yl)-4-(N-cyclopropyl-N-methylsulfamoyl)benzamide923478-54-0C21H18N4O3S2
- N-(Benzo[d]thiazol-2-yl)-2-((1-(furan-2-ylmethyl)-2-oxo-2,5,6,7-tetrahydro-1H-cyclopenta[d]pyrimidin-4-yl)thio)acetamide933204-91-2C21H18N4O3S2
- 4-(N-Benzyl-N-methylsulfamoyl)-N-(thieno[2,3-d]pyrimidin-4-yl)benzamide1235635-80-9C21H18N4O3S2
- 2,4-Dioxo-N-(2-(2-phenylthiazol-4-yl)ethyl)-3-(thiophen-2-ylmethyl)-1,2,3,4-tetrahydropyrimidine-5-carboxamide1421585-49-0C21H18N4O3S2
- 4-Methoxy-N-(4-(2-(pyridin-3-ylamino)thiazol-4-yl)phenyl)benzenesulfonamide1797558-26-9C21H18N4O3S2
- 3-Methoxy-N-(4-(2-(pyridin-3-ylamino)thiazol-4-yl)phenyl)benzenesulfonamide1797334-54-3C21H18N4O3S2
- 3-Allyl-5-(3-ethyl-1,3-benzothiazol-2(3H)-ylidene)-2-({4-nitrophenyl}imino)-1,3-thiazolidin-4-one330968-29-1C21H18N4O3S2
- 1-Benzyl-5-oxo-N-[4-oxo-2-(prop-2-yn-1-ylsulfanyl)-3H,4H-thieno[3,2-d]pyrimidin-3-yl]pyrrolidine-3-carboxamide2640896-49-5C21H18N4O3S2
- 5-(Benzenesulfonyl)-2-{[(5-methyl-2-phenyl-1,3-oxazol-4-yl)methyl]sulfanyl}pyrimidin-4-amine2319848-45-6C21H18N4O3S2
Frequently asked questions
What is the molar mass of C21H18N4O3S2?
The molar mass of C21H18N4O3S2 is 438.52 g/mol, calculated from standard atomic weights for 21 carbon atoms, 18 hydrogen atoms, 4 nitrogen atoms, 3 oxygen atoms and 2 sulfur atoms. The monoisotopic mass is 438.0820 Da.
How many compounds have the formula C21H18N4O3S2?
CompoundList lists 64 compounds with the molecular formula C21H18N4O3S2, including N-(4-(N-(5-Ethyl-1,3,4-thiadiazol-2-yl)sulfamoyl)phenyl)-1-naphthamide, N-(1,3-Benzodioxol-5-ylmethyl)-3-[(5-phenyl[1,3]thiazolo[2,3-c][1,2,4]triazol-3-yl)thio]propanamide, N-(1,3-Benzodioxol-5-ylmethyl)-2-{[5-(4-methylphenyl)[1,3]thiazolo[2,3-c][1,2,4]triazol-3-yl]thio}acetamide. Compounds that share a formula are isomers. They contain the same atoms arranged differently, so their properties, uses and prices can be very different.
What is the degree of unsaturation of C21H18N4O3S2?
C21H18N4O3S2 has a degree of unsaturation of 15. That is the total number of rings and pi bonds (a double bond counts as one, a triple bond as two) in any structure with this formula.