Molecular formula

C₁₈H₂₁N₃O₇S

14 compounds have this formula on CompoundList.

Molar mass: 423.44g/mol
Monoisotopic mass: 423.1100Da
Atoms: 50
Elements: 5
Rings plus double bonds: 10

The formula C18H21N3O7S describes a molecule made of 18 carbon atoms, 21 hydrogen atoms, 3 nitrogen atoms, 7 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 × 1851.06%
12.011 × 18 = 216.198 g/mol
H Hydrogen × 215.00%
1.008 × 21 = 21.168 g/mol
N Nitrogen × 39.92%
14.007 × 3 = 42.021 g/mol
O Oxygen × 726.45%
15.999 × 7 = 111.993 g/mol
S Sulfur × 17.57%
32.06 × 1 = 32.060 g/mol

Look up another formula

Compounds with the formula C18H21N3O7S

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

Showing 1 to 14 of 14 compounds

2-(3,4-Dimethoxy-N-methylsulfonylanilino)-N-(2-methyl-3-nitrophenyl)acetamide

CAS 706762-29-0C₁₈H₂₁N₃O₇S

N1-(furan-2-ylmethyl)-N2-((3-((4-methoxyphenyl)sulfonyl)oxazolidin-2-yl)methyl)oxalamide

CAS 868981-44-6C₁₈H₂₁N₃O₇S

Butyl N-[4-[(4-methoxy-2-nitrophenyl)sulfamoyl]phenyl]carbamate

CAS 418778-33-3C₁₈H₂₁N₃O₇S

1-tert-Butyl-3-[2-(3-methoxyphenoxy)-5-nitrophenyl]sulfonylurea

CAS 945716-28-9C₁₈H₂₁N₃O₇S

2-(Ethylsulfanyl)ethyl 1,6-dimethyl-4-(6-nitro-1,3-benzodioxol-5-yl)-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate

CAS 303137-04-4C₁₈H₂₁N₃O₇S

5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 3-((acetyloxy)methyl)-7-((aminophenylacetyl)amino)-8-oxo-, dihydrate, (6R-(6alpha,7beta(R*)))-

CAS 22202-76-2C₁₈H₂₁N₃O₇S

4-(2-(Furan-2-yl)-2-oxoethyl)-N-(thiophen-2-ylmethyl)piperazine-1-carboxamide oxalate

CAS 1351661-14-7C₁₈H₂₁N₃O₇S

2-(4-Ethoxy-N-methylsulfonylanilino)-N-(2-methoxy-5-nitrophenyl)acetamide

CAS 693795-13-0C₁₈H₂₁N₃O₇S

3-(1-(4-(Morpholinosulfonyl)benzoyl)pyrrolidin-3-yl)oxazolidine-2,4-dione

CAS 2034240-67-8C₁₈H₂₁N₃O₇S

N-{4-[(4-{[(2,5-Dioxopyrrolidin-1-yl)oxy]carbonyl}piperidin-1-yl)sulfonyl]phenyl}acetamide

CAS 903189-28-6C₁₈H₂₁N₃O₇S

4-Nitrophenyl N-[[2-[ethyl(methylsulfonyl)amino]-5-methoxyphenyl]methyl]carbamate

CAS 1825306-83-9C₁₈H₂₁N₃O₇S

(2S,5R,6R)-3,3-Dimethyl-6-[[3-(4-nitrophenoxy)-1-oxobutyl]amino]-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid

CAS 906332-09-0C₁₈H₂₁N₃O₇S

5-[3-[(3R)-1-Ethyl-2,5-dioxopyrrolidin-3-yl]sulfanylprop-1-ynyl]-1-[(2R,4S,5R)-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]pyrimidine-2,4-dione

CAS 172531-45-2C₁₈H₂₁N₃O₇S

5-[3-[(3S)-1-Ethyl-2,5-dioxopyrrolidin-3-yl]sulfanylprop-1-ynyl]-1-[(2R,4S,5R)-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]pyrimidine-2,4-dione

CAS 172531-46-3C₁₈H₂₁N₃O₇S

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What is the molar mass of C18H21N3O7S?

The molar mass of C18H21N3O7S is 423.44 g/mol, calculated from standard atomic weights for 18 carbon atoms, 21 hydrogen atoms, 3 nitrogen atoms, 7 oxygen atoms and 1 sulfur atom. The monoisotopic mass is 423.1100 Da.

How many compounds have the formula C18H21N3O7S?

CompoundList lists 14 compounds with the molecular formula C18H21N3O7S, including 2-(3,4-Dimethoxy-N-methylsulfonylanilino)-N-(2-methyl-3-nitrophenyl)acetamide, N1-(furan-2-ylmethyl)-N2-((3-((4-methoxyphenyl)sulfonyl)oxazolidin-2-yl)methyl)oxalamide, Butyl N-[4-[(4-methoxy-2-nitrophenyl)sulfamoyl]phenyl]carbamate. 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 C18H21N3O7S?

C18H21N3O7S has a degree of unsaturation of 10. 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.