Molecular formula

C₂₁H₁₈N₄O₄S

113 compounds have this formula on CompoundList.

Molar mass: 422.46g/mol
Monoisotopic mass: 422.1049Da
Atoms: 48
Elements: 5
Rings plus double bonds: 15

The formula C21H18N4O4S describes a molecule made of 21 carbon atoms, 18 hydrogen atoms, 4 nitrogen atoms, 4 oxygen atoms and 1 sulfur atom. 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 × 2159.71%
12.011 × 21 = 252.231 g/mol
H Hydrogen × 184.29%
1.008 × 18 = 18.144 g/mol
N Nitrogen × 413.26%
14.007 × 4 = 56.028 g/mol
O Oxygen × 415.15%
15.999 × 4 = 63.996 g/mol
S Sulfur × 17.59%
32.06 × 1 = 32.060 g/mol

Look up another formula

Compounds with the formula C21H18N4O4S

Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.

Showing 1 to 100 of 113 compounds

HS-173

CAS 1276110-06-5C₂₁H₁₈N₄O₄S

N-{4-[(2,6-Dimethylpyrimidin-4-yl)sulfamoyl]phenyl}-1-benzofuran-2-carboxamide

CAS 442651-58-3C₂₁H₁₈N₄O₄S

3,5-Dimethyl-N-[4-(pyrimidin-2-ylsulfamoyl)phenyl]-1-benzofuran-2-carboxamide

CAS 620585-33-3C₂₁H₁₈N₄O₄S

N-[4-(Acetylamino)phenyl]-2-[[6-(1,3-benzodioxol-5-yl)-3-pyridazinyl]thio]acetamide

CAS 872695-47-1C₂₁H₁₈N₄O₄S

(5Z)-2-(4-Butoxyphenyl)-5-(2-nitrobenzylidene)(1,3)thiazolo(3,2-B)(1,2,4)triazol-6(5H)-one

CAS 606958-14-9C₂₁H₁₈N₄O₄S

2-(6-Methyl-1-benzofuran-3-yl)-N-[4-(pyrimidin-2-ylsulfamoyl)phenyl]acetamide

CAS 757221-97-9C₂₁H₁₈N₄O₄S

2-{4-[(E)-(2-(4-Ethoxyphenyl)-6-oxo[1,3]thiazolo[3,2-B][1,2,4]triazol-5(6H)-ylidene)methyl]phenoxy}acetamide

CAS 606958-18-3C₂₁H₁₈N₄O₄S

4-(3-Methylsulfanyl-7-propanoyl-6H-[1,2,4]triazino[5,6-d][3,1]benzoxazepin-6-yl)benzoic acid

CAS 354779-23-0C₂₁H₁₈N₄O₄S

N-Benzyl-2-{[3-cyano-4-(3-nitrophenyl)-6-oxo-1,4,5,6-tetrahydropyridin-2-yl]sulfanyl}acetamide

CAS 693232-72-3C₂₁H₁₈N₄O₄S

$5-[4-(Furan-2-carbonyl)piperazine-1-carbonyl]-12-methyl-6-thia-1,8-diazatricyclo[7.4.0.0^{3,7}]trideca-3(7),4,8,10,12-pentaen-2-one chemical structure, C21H18N4O4S, CAS 1021260-81-0$

5-[4-(Furan-2-carbonyl)piperazine-1-carbonyl]-12-methyl-6-thia-1,8-diazatricyclo[7.4.0.0^{3,7}]trideca-3(7),4,8,10,12-pentaen-2-one

CAS 1021260-81-0C₂₁H₁₈N₄O₄S

4-((4-(Furan-2-yl)thiazol-2-yl)methoxy)-N-(2-(6-oxopyridazin-1(6H)-yl)ethyl)benzamide

CAS 1251686-10-8C₂₁H₁₈N₄O₄S

4-[2-[(Z)-[1-(4-Methylphenyl)-3,5-dioxopyrazolidin-4-ylidene]methyl]pyrrol-1-yl]benzenesulfonamide

CAS 428504-24-9C₂₁H₁₈N₄O₄S

Benzyl 2-((1-(2-methoxyphenyl)-4-oxo-4,5-dihydro-1H-pyrazolo[3,4-d]pyrimidin-6-yl)thio)acetate

CAS 921475-81-2C₂₁H₁₈N₄O₄S

7-Isopropyl-6-{[(3-phenyl-1,2,4-oxadiazol-5-yl)methyl]thio}[1,3]dioxolo[4,5-g]quinazolin-8(7H)-one

CAS 1032003-56-7C₂₁H₁₈N₄O₄S

N-(1,3-Benzodioxol-5-ylmethyl)-2-(7,9-dimethyl-4-oxopyrido[3',2':4,5]thieno[3,2-d]pyrimidin-3(4H)-yl)acetamide

CAS 946235-58-1C₂₁H₁₈N₄O₄S

N-(2,3-Dihydro-1,4-benzodioxin-6-yl)-2-(7,9-dimethyl-4-oxopyrido[3',2':4,5]thieno[3,2-d]pyrimidin-3(4H)-yl)acetamide

CAS 946236-10-8C₂₁H₁₈N₄O₄S

2-({[3-(2,4-Dimethoxyphenyl)-1,2,4-oxadiazol-5-yl]methyl}sulfanyl)-6-phenyl-4-pyrimidinol

CAS 946385-47-3C₂₁H₁₈N₄O₄S

2-Methyl-N-(4-(8-methylimidazo[1,2-a]pyridin-2-yl)phenyl)-5-nitrobenzenesulfonamide

CAS 865612-12-0C₂₁H₁₈N₄O₄S

4-Acetyl-N-(3-(6-methoxyimidazo[1,2-b]pyridazin-2-yl)phenyl)benzenesulfonamide

CAS 946232-75-3C₂₁H₁₈N₄O₄S

N-(1-(6-Methoxybenzo[d]thiazol-2-yl)-3-methyl-1H-pyrazol-5-yl)-2,3-dihydrobenzo[b][1,4]dioxine-6-carboxamide

CAS 1171743-86-4C₂₁H₁₈N₄O₄S

2-(Benzo[d][1,3]dioxol-5-yl)-N-(1-(6-methoxybenzo[d]thiazol-2-yl)-3-methyl-1H-pyrazol-5-yl)acetamide

CAS 1171459-34-9C₂₁H₁₈N₄O₄S

Methyl 4-{[1-(6-methoxy-1,3-benzothiazol-2-yl)-3-methyl-1H-pyrazol-5-yl]carbamoyl}benzoate

CAS 1169974-64-4C₂₁H₁₈N₄O₄S

Methyl 4-(((1-(2-methoxyphenyl)-4-oxo-4,5-dihydro-1H-pyrazolo[3,4-d]pyrimidin-6-yl)thio)methyl)benzoate

CAS 921475-93-6C₂₁H₁₈N₄O₄S

2-(((3-(2,3-Dimethoxyphenyl)-1,2,4-oxadiazol-5-yl)methyl)thio)-6-phenylpyrimidin-4(3H)-one

CAS 946328-69-4C₂₁H₁₈N₄O₄S

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What is the molar mass of C21H18N4O4S?

The molar mass of C21H18N4O4S is 422.46 g/mol, calculated from standard atomic weights for 21 carbon atoms, 18 hydrogen atoms, 4 nitrogen atoms, 4 oxygen atoms and 1 sulfur atom. The monoisotopic mass is 422.1049 Da.

How many compounds have the formula C21H18N4O4S?

CompoundList lists 113 compounds with the molecular formula C21H18N4O4S, including HS-173, N-{4-[(2,6-Dimethylpyrimidin-4-yl)sulfamoyl]phenyl}-1-benzofuran-2-carboxamide, 3,5-Dimethyl-N-[4-(pyrimidin-2-ylsulfamoyl)phenyl]-1-benzofuran-2-carboxamide. 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 C21H18N4O4S?

C21H18N4O4S 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.