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Molecular formula

C18H21N7O4S

5 compounds have this formula on CompoundList.

Molar mass
431.47g/mol
Monoisotopic mass
431.1376Da
Atoms
51
Elements
5
Rings plus double bonds
12

The formula C18H21N7O4S describes a molecule made of 18 carbon atoms, 21 hydrogen atoms, 7 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 × 1850.11%
    12.011 × 18 = 216.198 g/mol
  • H Hydrogen × 214.91%
    1.008 × 21 = 21.168 g/mol
  • N Nitrogen × 722.72%
    14.007 × 7 = 98.049 g/mol
  • O Oxygen × 414.83%
    15.999 × 4 = 63.996 g/mol
  • S Sulfur × 17.43%
    32.06 × 1 = 32.060 g/mol
Look up another formula

Compounds with the formula C18H21N7O4S

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

Showing 1 to 5 of 5 compounds

Tiodazosin chemical structure, C18H21N7O4S, CAS 66969-81-1
Tiodazosin
CAS 66969-81-1C18H21N7O4S
3-Amino-N-(2-{4-[(3-methyl-4,5-dihydro-1H-pyrazole-1-carbonyl)sulfamoyl]phenyl}ethyl)pyrazine-2-carboxamide chemical structure, C18H21N7O4S, CAS 74210-75-6
3-Amino-N-(2-{4-[(3-methyl-4,5-dihydro-1H-pyrazole-1-carbonyl)sulfamoyl]phenyl}ethyl)pyrazine-2-carboxamide
CAS 74210-75-6C18H21N7O4S
N-(4-(N-(2-(6-Oxo-3-(1H-1,2,4-triazol-1-yl)pyridazin-1(6H)-yl)ethyl)sulfamoyl)phenyl)butyramide chemical structure, C18H21N7O4S, CAS 1448035-00-4
N-(4-(N-(2-(6-Oxo-3-(1H-1,2,4-triazol-1-yl)pyridazin-1(6H)-yl)ethyl)sulfamoyl)phenyl)butyramide
CAS 1448035-00-4C18H21N7O4S
N-((4-Methoxy-6-morpholino-1,3,5-triazin-2-yl)methyl)-4-(1H-pyrazol-1-yl)benzenesulfonamide chemical structure, C18H21N7O4S, CAS 2034271-59-3
N-((4-Methoxy-6-morpholino-1,3,5-triazin-2-yl)methyl)-4-(1H-pyrazol-1-yl)benzenesulfonamide
CAS 2034271-59-3C18H21N7O4S
2-Methoxy-5-[methyl(1-{3-methyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}azetidin-3-yl)sulfamoyl]benzamide chemical structure, C18H21N7O4S, CAS 2309630-94-0
2-Methoxy-5-[methyl(1-{3-methyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}azetidin-3-yl)sulfamoyl]benzamide
CAS 2309630-94-0C18H21N7O4S

Frequently asked questions

What is the molar mass of C18H21N7O4S?

The molar mass of C18H21N7O4S is 431.47 g/mol, calculated from standard atomic weights for 18 carbon atoms, 21 hydrogen atoms, 7 nitrogen atoms, 4 oxygen atoms and 1 sulfur atom. The monoisotopic mass is 431.1376 Da.

How many compounds have the formula C18H21N7O4S?

CompoundList lists 5 compounds with the molecular formula C18H21N7O4S, including Tiodazosin, 3-Amino-N-(2-{4-[(3-methyl-4,5-dihydro-1H-pyrazole-1-carbonyl)sulfamoyl]phenyl}ethyl)pyrazine-2-carboxamide, N-(4-(N-(2-(6-Oxo-3-(1H-1,2,4-triazol-1-yl)pyridazin-1(6H)-yl)ethyl)sulfamoyl)phenyl)butyramide. 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 C18H21N7O4S?

C18H21N7O4S has a degree of unsaturation of 12. 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.